Predefined diagnostic items

Predefined OPC UA diagnostic items are tags accessible from
FactoryTalk Linx
 OPC UA Connector. These items show diagnostic information about the OPC UA Connector and the connected OPC UA Servers, including predefined redundancy diagnostic items, predefined retained value diagnostic items, and predefined OPC UA method diagnostic items.
The predefined retained value diagnostic items do not have a value assigned to them. When a client assigns a value, this value is preserved and becomes a permanent part of the OPC UA Server’s configuration. The value is used each time the service restarts and is saved as part of a backup/restore operation. These items are typically used to work around server limitations and for other special purposes.
Predefined items can also be used as data item tags in
FactoryTalk View
 applications. Use a
FactoryTalk
 client such as a
FactoryTalk View SE
 display or
FactoryTalk Live Data Test Client
 to view diagnostic information using predefined items.
Each diagnostic item is updated internally once per second.

@ComputerName

This diagnostic item displays the current host name of the OPC UA Server. In redundancy mode, it displays the current active host name.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@DAQ_BlocksPolledRate

This diagnostic item returns the rate at which
FactoryTalk Services Platform
 requests blocks of tags from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_R4

@DAQ_BlocksPollRatesInUse

This diagnostic item returns the unique tag subscription rates at which
FactoryTalk Linx
 OPC UA Connector requests blocks of tags from one or more OPC UA Servers. The subscription rates only apply to tags provided by the OPC UA Servers and do not apply to
FactoryTalk Linx
 OPC UA diagnostic items.
The default
@DAQ_BlocksPollRatesInUse
 diagnostic item returns subscription rates only for the OPC UA Server listed in the browse path. The
@DAQ_BlocksPollRatesInUse
 diagnostic item under
GlobalRollup
 returns subscription rates for all OPC UA Servers connected to
FactoryTalk Linx
 OPC UA Connector.
The diagnostic item returns subscription rates in milliseconds, in a comma separated string. The diagnostic item only displays unique subscription rates. If
FactoryTalk Linx
 OPC UA Connector uses the same subscription rate for two or more OPC UA Servers, only one value is displayed. For example, if three subscriptions are at the rates 500 ms, 2000 ms, and 500 ms, the string will return "500, 2000".
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@DAQ_ClientConnectionsQty

This diagnostic item returns the number of open client sessions between
FactoryTalk Services Platform
 and an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsActivatedQty

This diagnostic item returns the number of tags set to the active state that
FactoryTalk
 clients request from an OPC UA Server or all OPC UA Servers connected to a
FactoryTalk Linx
 OPC UA Connector. The value of the diagnostic item increases as tags are set active. It does not decrease as tags are set inactive.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsActiveQty

This diagnostic item returns the number of tags in the active state that
FactoryTalk
 clients request from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector. The value of the diagnostic item increases as tags are set active and decreases as items are set inactive.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsAddDuplicateQty

This diagnostic item returns the number of identical tags that
FactoryTalk
 clients request from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsAddedQty

This diagnostic item returns the number of tags that
FactoryTalk
 clients request from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsAddFailureQty

This diagnostic item returns the number of tags that
FactoryTalk
 clients request but do not exist in an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsAddSuccessQty

This diagnostic item returns the number of tags that
FactoryTalk
 clients request and receive from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsDeactivatedQty

This diagnostic item returns the number of tags set to inactive state that
FactoryTalk
 clients request from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector. The value of the diagnostic item increases as tags are set inactive. It does not decrease as tags are set active.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsInactiveQty

This diagnostic item returns the number of tags in the inactive state that
FactoryTalk
 clients request from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector. The value of the diagnostic item increases as tags are set inactive and decreases as items are set active.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsInPollblocksQty

This diagnostic item returns the number of tags in all pollblocks that
FactoryTalk Services Platform
 requests from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ItemsRemovedQty

This diagnostic item returns the number of tags that
FactoryTalk
 clients no longer request from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_LongestLockedBlockTime

This diagnostic item returns the longest amount of time in milliseconds that an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector spent processing a single pollblock.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@DAQ_LongestLockedBlockTotalTimeDuringProcessing

This diagnostic item measures the longest period of time
FactoryTalk Linx
 OPC UA Connector spent waiting to write data to the shared buffer that is used to transfer data between the OPC UA Connector and
FactoryTalk Live Data
. Long waits indicate high utilization of
FactoryTalk Live Data
 processes and may indicate it is overloaded.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI8

@DAQ_OverloadCriticalDetectedQty

This diagnostic item indicates the number of times the backlog of messages from
FactoryTalk Live Data
 exceeded the critical threshold value for the number of items that could be stored in in the overload queue. When the critical threshold value is exceeded,
FactoryTalk Linx
 OPC UA Connector discards all pending read and write commands. Discarding the queued commands prevents service failure due to exceeding memory limits. Critical overloads indicate that
FactoryTalk Live Data
 clients are sending individual reads and writes to the OPC UA Connector faster than the OPC UA Server can process.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_OverloadDetectedQty

This diagnostic item indicates the number of times the backlog of messages from
FactoryTalk Live Data
 exceeded the threshold value for the number of items that could be stored in in the overload queue. When the overload threshold value is exceeded,
FactoryTalk Linx
OPC
 UA Connector discards pending read commands. If after discarding the read commands the number of commands queued still exceeds the overload threshold value the
FactoryTalk Linx
OPC
 UA Connector discards pending write commands. Discarding queued commands prevents service failure due to exceeding memory limits. Overloads indicate that
FactoryTalk Live Data
 clients are sending individual reads and writes to the OPC UA Connector faster than the OPC UA Server can process.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_OverloadItemsDiscardedQty

This diagnostic item indicates the total number of read and write commands that were discarded from the
FactoryTalk Linx
OPC
 UA Connector as a result of exceeding the overload threshold value. Discarding queued commands prevents service failure due to exceeding memory limits. Discarded commands indicate that
FactoryTalk Live Data
 clients are sending individual reads and writes to the OPC UA Connector faster than the OPC UA Server can process.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_OverloadQueueDepth

This diagnostic item indicates the number of individual read and write commands from
FactoryTalk Live Data
 clients that are waiting to be executed by the
FactoryTalk Linx
OPC
 UA Connector and sent to the UA server. A large value indicates that
FactoryTalk Live Data
 clients are sending individual reads and writes to the OPC UA Connector faster than the OPC UA Server can process.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_PollblocksQty

This diagnostic item returns the number of blocks of tags that
FactoryTalk Linx
 OPC UA Connector requests from one or more connected OPC UA Servers.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@DAQ_ScanRateOverrideActive

This diagnostic item returns whether the
Requested tag update rate
 option on OPC UA Servers is selected. When this option is selected, the tag value will be transmitted to OPC UA client at the update rate configured in
FactoryTalk Linx
OPC
 UA Connector, regardless of the update rate configured in client application.
This item value is TRUE when the scan rate is being overridden; otherwise the value is FALSE.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@DAQ_SessionStatus

This diagnostic item returns the connection status between the
FactoryTalk Linx
 OPC UA Connector and a specific OPC UA Server. TRUE indicates that the OPC UA Server is connected, while FALSE indicates that the OPC UA Server is not connected.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@DAQ_TagsUpdatedRate

This diagnostic item returns the rate in seconds at which the OPC UA Server sends updated values to
FactoryTalk Live Data
 tags.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_R4

@DAQtoOPC_ContainersQty

This diagnostic item returns the number of configured connections between the OPC UA Connector and one or more connected OPC UA Servers.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

Retained\@DP_AuditOldTimestamps

When enabled, for each tag received with an older time stamp, only the first instance is logged. Logging of further instances of that tag will be temporarily disabled until a value with a newer time stamp is received. This process prevents the log from being flooded with multiple entries for the same issue. The log includes a message that specifies both the old and new time stamps, along with the difference between them.
When disabled, no message will be logged.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

@DP_CacheFileVersionCurrent

This diagnostic item returns the current level of namespace cache file.
TIP: The version number is specific to the cache file and does not match the FactoryTalk Services or UA Connector version.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@DP_CacheFileVersionExisting

This diagnostic item returns the version found in the namespace cache file.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@DP_ConnectorVersionMsg

This diagnostic item returns the version number of the
FactoryTalk Linx
OPC
 UA Connector.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@DP_CounterResetCmd

This diagnostic item sends a counter reset command to an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector. The Servers set all of their resettable diagnostic item values to 0.
To send the reset command, use an OPC UA client, such as the
FactoryTalk Live Data Test Client
, to set the
@DP_CounterResetCmd
 to TRUE. Once the command is sent, the value of
@DP_CounterResetCmd
 resets to FALSE.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@DP_EndpointQty

This diagnostic item returns the number of OPC UA Servers configured to the OPC UA Connector.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_UI4

@DP_ProcessMemoryUsed_KB

This diagnostic item returns the total quantity of kilobytes that the entire OPC UA Connector process uses.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@DP_ServiceStartupTimestampMsg

This diagnostic item returns the date and time when the
FactoryTalk Linx
OPC
 UA Connector service started.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@DP_TraceLevelValue

This diagnostic item sets and returns the level of diagnostic tracking for an OPC UA Connector.
Trace level
Trace Level
Value
Description
None
0
Send no diagnostic messages to the
FactoryTalk Diagnostics
 log.
Fatal
1
Send only Fatal level messages to the
FactoryTalk Diagnostics
 log.
Error and Higher
2
Send Error and Fatal level messages to the
FactoryTalk Diagnostics
 log.
Warning and Higher (default)
3
Send Warning, Error, and Fatal level messages to the
FactoryTalk Diagnostics
 log.
Info and Higher
4
Send Info, Warning, Error, and Fatal level messages to the
FactoryTalk Diagnostics
 log.
Debug and Higher
5
Send Debug, Info, Warning, Error, and Fatal level messages to the
FactoryTalk Diagnostics
 log.
Properties
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_UI4

@DP_UAToolkit_VersionMsg

This diagnostic item returns the version number of the UA toolkit used in
FactoryTalk Linx
OPC
 UA Connector.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@Identity

This diagnostic item returns "
UA Connector_v.
" followed by the version built into the OPC UA Connector. For example, "
OpcUaConnector_v6.30.00.00000"
.
GlobalRollup: the same string is returned.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@LD_AdsiPath

This diagnostic item returns the ActiveDirectoryServicesInterface path used by
FactoryTalk Live Data
 to connect to the Data Provider.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@LD_ConvertUnsupportedTypesToString

When set to TRUE:
  • When the tag’s OPC UA is DateTime:
    • The tag browser displays two tags for each OPC UA Node: a tag’s and another tag with
      @UAx_DateTimeString
       appended to it. Tags without the modifier will continue to deliver the value as a VT_UI8. Tags with the modifier will convert the value to a local time string (VT_BSTR) suitable for display.
    • If the modifier is appended to tags of any other OPC UA , an error returns.
  • All other OPC UA DataTypes that are not explicitly supported are converted to strings (VT_BSTR) and are suitable for display purposes. All these tags are read-only. Data types that will be converted to strings are as follows:
    • DateTime
    • DateTime@UAx_DateTimeString
    • Guid
    • ByteString
    • NodeId
    • ExpandedNodeId
    • XmlElement
    • StatusCode
    • QualifiedName
    • LocalizedText
    • Enumerations
  • The setting only results in the tags being added to the namespace available to the tag browser.
When set to FALSE:
  • No modifier is appended to any tag and all values are provided as defined elsewhere.
  • Existing tags that use the appended text will continue to function correctly as described above. This setting only affects the tag browser.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@OPC_AlarmAckedAlarmConditionsQty

This diagnostic item returns the number of acknowledged alarms in the namespace of the OPC UA Server connected to an OPC UA Connector. The alarms are only counted when Retain is True.
TIP:
This counter is calculated by the OPC UA Connector based on the information received from the OPC UA Server. Similar counters on the server might have a different value.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_AlarmActiveAlarmConditionsQty

This diagnostic item returns the number of active alarms in the namespace of the OPC UA Server connected to an OPC UA Connector. The alarms are only counted when Retain is True.
TIP:
This counter is calculated by the OPC UA Connector based on the information received from the OPC UA Server. Similar counters on the server might have a different value.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_AlarmDisabledAlarmConditionsQty

This diagnostic item returns the number of disabled alarms in the namespace of the OPC UA Server connected to an OPC UA Connector. The alarms are only counted when Retain is True.
TIP:
This counter is calculated by the OPC UA Connector based on the information received from the OPC UA Server. Similar counters on the server might have a different value.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_AlarmEventProviderStatus

This diagnostic item returns the alarm event data provider status. Possible values include:
  • 0: Stopped
  • 1: Ready
  • 2: NotLoaded
  • 3: Loading
  • 4: Loaded
  • 5: LoadFailed
  • 6: Subscribing
  • 7: Subscribed
  • 8: SubscribeFailed
  • 9: Refreshing
  • 10: RefreshFailed
  • 11: Disconnected
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_AlarmFaultedAlarmConditionsQty

The diagnostic item returns the number of faulted alarms in the namespace of an OPC UA Server connected to an OPC UA Connector. The alarms are only counted when Retain is True.
TIP:
This counter is calculated by the OPC UA Connector based on the information received from the OPC UA Server. Similar counters on the server might have a different value.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_AlarmShelvedAlarmConditionsQty

The diagnostic item returns the number of shelved alarms in the namespace of an OPC UA Server connected to an OPC UA Connector. The alarms are only counted when Retain is True.
TIP:
This counter is calculated by the OPC UA Connector based on the information received from the OPC UA Server. Similar counters on the server might have a different value.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_AlarmSuppressedAlarmConditionsQty

This diagnostic item returns the number of suppressed alarms in the namespace of an OPC UA Server connected to an OPC UA Connector. The alarms are only counted when Retain is True.
TIP:
This counter is calculated by the OPC UA Connector based on the information received from the OPC UA Server. Similar counters on the server might have a different value.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_AlarmTotalAlarmConditionsQty

This diagnostic item returns the number of alarms in the namespace of an OPC UA Server connected to an OPC UA Connector. The alarms are only counted when Retain is True.
TIP:
This counter is calculated by the OPC UA Connector based on the information received from the OPC UA Server. Similar counters on the server might have a different value.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_CertificateIncomingApplicationNameMsg

This diagnostic item returns the application name in the certificate received from the OPC UA Server
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingApplicationURIMsg

This diagnostic item returns the application URL in the certificate received from the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingDateExpiresMsg

This diagnostic item returns the expiration date and time for the certificate provided by
FactoryTalk Linx
 OPC UA Connector to the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingDateModifiedMsg

This diagnostic item returns the modification date and time for the certificate provided by
FactoryTalk Linx
 OPC UA Connector to the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingDomainMsg

This diagnostic item returns the domain name in the certificate received from the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingIssuerMsg

This diagnostic item returns the issuer in the certificate received from the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingLocationMsg

This diagnostic item returns the file location of the certificate provided by
FactoryTalk Linx
 OPC UA Connector to the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingNameMsg

This diagnostic item returns the name of the certificate provided by
FactoryTalk Linx
 OPC UA Connector to the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingOrganizationMsg

This diagnostic item returns the organization in the certificate received from the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingSubjectMsg

This diagnostic item returns the subject in the certificate received from the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateIncomingThumbprintMsg

This diagnostic item returns the thumbprint in the certificate received from the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateOutgoingDateExpiresMsg

This diagnostic item returns the expiration date and time for the
FactoryTalk Linx
 OPC UA Connector certificate.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateOutgoingDateModifiedMsg

This diagnostic item returns the modification date and time for the
FactoryTalk Linx
 OPC UA Connector certificate.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateOutgoingLocation

This diagnostic item returns the location of the
FactoryTalk Linx
 OPC UA Connector certificate.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateOutgoingName

This diagnostic item returns the name of the
FactoryTalk Linx
 OPC UA Connector certificate.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateOutgoingPath

This diagnostic item lists the file path for the
FactoryTalk Linx
 OPC UA Connector certificate.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BSTR

@OPC_CertificateOutgoingRegenerateCmd

This diagnostic item sends a regenerate certificate command to the OPC UA Connector, prompting it to generate a new outgoing certificate.
To send the regenerate certificate command, use an OPC UA client such as
FactoryTalk Live Data Test Client
 to set
@OPC_OutgoingCertificateRegenerateCmd
 to TRUE. Once the command is sent,
@OPC_CertificateOutgoingRegenerateCmd
 resets to FALSE.
Resettable
No
Browse path for
An OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
FactoryTalk
 data type
VT_BOOL

@OPC_CommConnectedStatus

This diagnostic item returns the communication status between an OPC UA Connector and an OPC UA Server. TRUE indicates that the OPC UA Server is connected, while FALSE indicates the OPC UA Server is disconnected.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@OPC_CommConnectionFailedQty

This diagnostic item returns the number of communication errors reported from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_CommConnectionFailedRecoveryAttemptFailedQty

This diagnostic item returns the number of failed attempts to restore a session for an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_CommConnectionFailedRecoveryAttemptSucceededQty

This diagnostic item returns the number of successful attempts to restore a session for an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_CommConnectionFailedUrlMsg

This diagnostic item returns the URL of the most recently accessed OPC UA Server that failed to reconnect to the OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CommConnectionQty

This diagnostic item returns the number of active sessions for an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector. Increments by one when a session connection succeeds. Decrements by one when a session connection fails.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_CommItemsFailedAndRestoredQty

This diagnostic item returns the number of tags monitored in an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector that went inactive due to an error but were restored through recovery.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_CommLastErrorMsg

This diagnostic item returns the last communication error from an OPC UA Server.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_CommSubscriptionsFailedAndRestoredQty

This diagnostic item returns the number of successful attempts to restore a subscription for an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_CommSubscriptionsFailedQty

This diagnostic item returns the number of subscriptions that entered an error state for an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_CommSubscriptionsFailedRecoveryAttemptsQty

This diagnostic item returns the number of failed attempts to restore a subscription for an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_ItemsBadQualityQty

This diagnostic item returns the number of tags with Bad quality provided by an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_ItemsMonitoredQty

This diagnostic item returns the number of tags in all subscriptions that
FactoryTalk Services Platform
 monitors for data from an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_ItemsUnverifiedQty

This diagnostic item returns the number of tags from the connected OPC UA Server that cannot be verified. Refresh the tag names as needed.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_ItemsUpdatedRate

This diagnostic item returns the rate in tag values per second at which tag values are sent by an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_R4

@OPC_ItemsWrittenErrorsQty

This diagnostic item returns the number of tag write errors logged by an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_ItemsWrittenLastErrorMsg

This diagnostic item returns the last write error message logged by an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_ItemsWrittenQty

This diagnostic item returns the number of attempted writes to tags in an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

Retained\@OPC_Methods_Arrays_AllowExcessArrayElements

If the array size is non-zero, this diagnostic item controls whether more than the maximum number of elements can be sent.
When it is set to FALSE and more elements are supplied, the method fails validation and returns an error to the OPC UA Client.
When it is set to TRUE, more elements can be sent to the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

Retained\@OPC_Methods_Arrays_AllowPartial

The input argument metadata indicates if the argument is an array and includes the maximum array size.
If the array size is non-zero, it is the maximum number of elements that the array can contain rather than its required length. The OPC UA Server might treat it as a required length and will return errors if the OPC UA Server does not receive them. When the array size is non-zero and the diagnostic item is set to FALSE, all elements in the array must be supplied. Otherwise, the method fails validation and will not be invoked in the OPC UA Server.
If the array size is zero, the maximum number of elements is unknown. The validation step is not performed and any number of elements might be sent.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

Retained\@OPC_Methods_Arrays_DisplayAllTags

This diagnostic item controls how array method arguments are displayed in the tag browser. This attribute is helpful to limit or show all array element tags in the namespace.
When it is set to TRUE, all elements in the array are displayed, including arrays of structures.
When it is set to FALSE, only the last usable element in an array is displayed.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

Retained\@OPC_Methods_Arrays_UseEmpty

This diagnostic item controls how array input method arguments are validated and sent to the OPC UA Server. An array is considered empty when the method is called and the Live Data client has not written values to the array elements.
When it is set to FALSE (default), only arrays with at least one element are sent to the OPC UA Server.
When it is set to TRUE, empty arrays can be sent to the OPC UA Server. The input argument sent on-the-wire contains the correct DataType. However, instead of containing values, a special code indicates that the array is empty.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

Retained\@OPC_Methods_ContinueExecutionOnError

This diagnostic item determines whether to cancel the subsequent methods in the same transaction with the faulting method.
If this diagnostic item is set to FALSE, the faulting method and all subsequent methods in the same transaction are canceled.
If this diagnostic item is set to TRUE, the faulting method is canceled, but the subsequent methods in the same transaction continue with execution attempts.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

Retained\@OPC_Methods_GenerateDiagnosticMessages

Enable this diagnostic item to record all method calls as diagnostic messages through
FactoryTalk Diagnostics
.
If this diagnostic item is set to TRUE, the OPC UA Connector will generate a message for all detected methods that it does not support when it initially connects to the OPC UA Server. The message contents will begin with the tag's name and NodeId. The method is not supported because it has an unsupported input or output argument, either its DataType or an array where only a scalar is accepted. The input and output arguments will be listed, starting with the index number of its argument position such as 0, 1, and 2. If the argument is not supported, it contains “NA”, followed by a brief reason, for example, input array. It will also contain the argument name, its data type, and its shape such as scalar, array[], and matrix[,,].
Unsupported method example
opcuac_method_diagnostic_itme3
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

Retained\@OPC_Methods_PerSessionTimeout_ms

This diagnostic item returns the timeout used by all methods unless explicitly overridden. User can enter any value. However, the system will use the shorter of the two values. For example, if the per-method timeout is 5000 ms and the per-session timeout is 2000 ms, it will time out in 2 s.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_UI4

Retained\@OPC_Methods_QueuedMaxBacklog

This diagnostic item returns the maximum number of methods allowed to be queued up. The default value is 100. 0 means no limit.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsCommand_AbortAllMethods

This diagnostic item cancels all pending method calls and makes the best effort to cancel methods currently executing in the OPC UA Server.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsErrors_ArgumentMismatchQty

This diagnostic item returns the count of failures to call a method due to incorrect input arguments provided to
FactoryTalk Linx
 OPC UA Connector. This is usually caused by missing arguments.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsErrors_ArgumentTypeConversionQty

This diagnostic item returns the count of failures to call a method due to a data type mismatch so that the value cannot be converted to the required type.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsErrors_DuplicateValuesQty

This diagnostic item returns the count of the total number of duplicate values. Within the same transaction, when a value is written to the same tag multiple times, each instance is considered a duplicate. For example, if four values are written to the same tag within the same transaction, there are three duplicates.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsErrors_MethodFaultQty

This diagnostic item returns the count of methods that failed to run. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsErrors_ServerDisconnectedQty

This diagnostic item returns the count of failures caused by not being connected to the OPC UA Server, either before or during the running process. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsErrors_ServiceFaultQty

This diagnostic item returns the count of methods that failed at the service level. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsErrors_TimedOutQty

This diagnostic item returns the count of method calls that timed out. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsInfo_LastMethodCalledMsg

This diagnostic item returns the name of the last method that was called. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_MethodsInfo_MethodsDiscardedOrAborted

This diagnostic item returns the number of call attempts that were discarded before being sent to the OPC UA Server because the maximum queue limit was exceeded or canceled by the user. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsInfo_MethodsExecuting

This diagnostic item returns the total number of methods that are currently running in the OPC UA Server.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsInfo_QueuedWaiting

This diagnostic item returns the total number of methods currently queued up waiting for their turn to be run.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsInfo_QueuedWaitingPeak

This diagnostic item returns the maximum value reached of the total number of methods queued up waiting for their turn to be run. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsInfo_TotalQty

This diagnostic item returns the total number of methods in the OPC UA Server. This attribute is updated each time the OPC UA Connector uploads an OPC UA Server’s namespace.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsInfo_UnusableQty

This diagnostic item returns the total number of methods that cannot be used by the OPC UA Connector. This is caused by incompatible arguments. This attribute is updated each time the OPC UA Connector uploads an OPC UA Server’s namespace.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsInfo_WithArgsQty

This diagnostic item returns the total number of methods that take input arguments or have output arguments.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsInfo_WithNoArgsQty

This diagnostic item returns the total number of methods that take no arguments. This attribute is updated each time the OPC UA Connector uploads an OPC UA Server’s namespace.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsResults_TotalCallAttemptsQty

This diagnostic item returns the total number of method calls received by the OPC UA Connector. This should be the sum of counters
@OPC_MethodsResults_TotalErrorsQty
 and
@OPC_MethodsResults_TotalSuccessQty
. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsResults_TotalCalledInServerQty

This diagnostic item returns the total number of method calls sent to the OPC UA Servers to be run. This may be less than the count in
@OPC_MethodsResults_TotalCallAttemptsQty
 if there were errors detected by the OPC UA Connector before a method was sent to the server for execution. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsResults_TotalErrorsQty

This diagnostic item returns the total number of errors. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_MethodsResults_TotalSuccessQty

This diagnostic item returns the total number of successful calls. You can reset this counter by writing any value to
@DP_CounterResetCmd
.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceAnalysisCmd

This diagnostic item sends an analysis command to the OPC UA Server, prompting the OPC UA Server to send its namespace to the OPC UA Connector. The OPC UA Connector saves the namespace to the following file on the host computer:
C:\ProgramData\Rockwell\OpcUaConnector\RnaUaClientDataProvider\AddressSpace\
<ConnectorName>
_
<ServerName>
_
<ServerEndpointURL>
.txt
where
<ConnectorName>
,
<ServerName>
, and
<ServerEndpointURL>
 are configured on the
OPC UA Servers
 tab.
This diagnostic item accepts a VT_UI4 numeric value from 0 through 4 to specify the namespace type to be saved.For example, if 1 is written to the diagnostic item, the analysis file only contains the supported namespace items. Unsupported namespace items and folders are excluded.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 input data type
VT_UI4
Accepted values are:
  • 0 (default) - save all namespace items and folders.
  • 1 - save only namespace items with supported data types, no folders.
  • 2 - save only namespace items with unsupported data types, no folders.
  • 3 - save only folders.
  • 4 - save all namespace items with supported data types that contain scalar or array values.
FactoryTalk
 output data type
VT_UI4
Displays the number of times the namespace has been analyzed. Increments by 1 when the analysis file is created.

@OPC_NamespaceAnalysisFile

This diagnostic item returns the path and filename of the namespace analysis file created by
@OPC_NamespaceAnalysisCmd
 or the
Analyze tag names
 function.
The default path and filename are
C:\ProgramData\Rockwell\OpcUaConnector\RnaUaClientDataProvider\AddressSpace\
<ConnectorName>
_
<ServerName>
_
<ServerEndpointURL>
.txt
.
In the output filename, , , and are replaced with the names and Endpoint URL of the OPC UA Connector and OPC UA Server configured on the
OPC UA Servers
 tab.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_NamespaceCacheIsPresentStatus

This diagnostic item returns whether the OPC UA Connector contains a local namespace cache of the specified OPC UA Server. TRUE indicates that the namespace cache is present on the OPC UA Connector, while FALSE indicates that the namespace cache is not present.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@OPC_NamespaceCacheLastRefreshedTimestampMsg

This diagnostic item returns the most recent date and time that the OPC UA Connector refreshed the namespace cache of the specified OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_NamespaceCacheUploadActiveStatus

This diagnostic item returns whether the OPC UA Server is uploading its namespace cache to an OPC UA Connector.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@OPC_NamespaceCacheUploadCancelCmd

This diagnostic item sends an upload cancel command to an OPC UA Server. If a namespace upload is in progress, the upload cancels.
To send the upload command, use an OPC UA client, such as
FactoryTalk Live Data Test Client
, to set this diagnostic item to TRUE. Once the command is sent, the diagnostic item value resets to FALSE.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@OPC_NamespaceCacheUploadCmd

This diagnostic item sends an upload command to an OPC UA Server. The OPC UA Server namespace is uploaded to and cached on its OPC UA Connector.
To send the upload command, use an OPC UA client, such as
FactoryTalk Live Data Test Client
, to set the diagnostic item to TRUE. Once the command is sent, the diagnostic value resets to FALSE.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@OPC_NamespaceCacheUploadCompleteStatus

This diagnostic item returns whether an OPC UA Server namespace upload is complete. TRUE indicates the namespace cache upload is complete, while FALSE indicates the namespace cache upload is in process and not complete.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@OPC_NamespaceCacheUploadContinuationPointErrorsQty

This diagnostic item returns the number of times the OPC UA Server returns an error code during the ContinuationPoint processing. This value should always be 0. Any other value usually indicates network problems or defects in the server.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceCacheUploadCurrentOperationMsg

This diagnostic item returns a text message that describes what the OPC UA Connector is doing during initialization of the address space.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_NamespaceCacheUploadErrorsQty

This diagnostic item returns the total number of errors that occurred during an upload, including ContinuationPoint related errors.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceCacheUploadMetricAvgTimeRate

This diagnostic item returns the average rate in tags per second at which tag information was uploaded from an OPC UA Server to its OPC UA Connector.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_R8

@OPC_NamespaceCacheUploadMetricAvgTimeRateMsg

This diagnostic item returns the average rate in tags per second at which tag information was uploaded from the OPC UA Server to its connected OPC UA Connector.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_NamespaceCacheUploadMetricTotalTimeQty

This diagnostic item returns the total number of seconds spent uploading tag information from an OPC UA Server to its OPC UA Connector.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceCacheUploadMetricTotalTimeMsg

This diagnostic item returns the total time in seconds in which tag information was uploaded from an OPC UA Server to its OPC UA Connector.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_NamespaceCacheUploadRequeuedContinuationPointQty

This diagnostic item returns the number of times the OPC UA Connector retries to request data from the OPC UA Server when the OPC UA Server runs out of available ContinuationPoints.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceCacheUploadServerReplyDelayTimeMsg

This diagnostic item returns the cumulative time the OPC UA Connector spends waiting on a reply from the OPC UA Server during an upload operation. If this time is excessive, the OPC UA Server might be overloaded, underpowered, or has implementation constraints.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_NamespaceDuplicateBrowseNamesQty

This diagnostic item returns the number of tags with duplicate browse names provided by an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceTotalArraysInServerQty

This diagnostic item returns the number of unsupported array items in the namespace of an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceTotalBuiltinTypesQty

This diagnostic item returns the total quantity of built-in types in namespace.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceTotalComplexTypesQty

This diagnostic item returns the total quantity of complex types in namespace.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceTotalItemsUnsupportedTypesInServerQty

This diagnostic item returns the total number of unsupported variable nodes in an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceTotalNodesInServerQty

This diagnostic item returns the number of OPC UA items in an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceTotalSubtypesQty

This diagnostic item returns the total quantity of subtypes in namespace.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceTotalTagsInServerQty

This diagnostic item returns the number of OPC UA items that have supported data types and are converted to
FactoryTalk
 tags in an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceTotalUnresolvedTagsQty

This diagnostic item returns the total quantity of unresolved types in namespace.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_NamespaceUploadErrorsQty

This diagnostic item returns the number of errors that occurred during the last upload by an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

Retained\@OPC_OverrideMaxBrowseReplyDataPerNode

This diagnostic item returns the number of references (reply data) returned to the client for each node requested.
Possible values are as follows:
  • 0
    : No limit on the number of references returned to the client for each node requested.
  • 1-10000
    : OPC UA Connector sends no more than this number of references per node request.
  • -1
     (default): Does not override the normal operation.
All other values are ignored.
Change this setting if errors such as
BadEncodingLimitsExceeded
 occur due to reply messages exceeding the network capacity when uploading address space. In such cases, set this diagnostic item to a value that reduces the amount of reply data from the OPC UA Server to the OPC UA Connector. A moderate value range is from 10 through 100. If the reply data is still too much, set this diagnostic item to a value that is less than the value of the OPC UA Server. A typical range for the value is from 5 through 100.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_I2

Retained\@OPC_OverrideMaxNodesPerBrowse

This diagnostic item returns the number of nodes per browse request to the OPC UA Server.
If a ContinuationPoint error occurs, the OPC UA Server might be overloaded, which requires the OPC UA Connector to reduce the number of nodes per browse request. Check the following file that contains data collected from the OPC UA Server when it first connects. You can also use an OPC UA browser to locate these directly in the OPC UA Server.
C:\ProgramData\Rockwell\OpcUaConnector\RnaUaClientDataProvider\cache\
<serverip_name>
.ServerInfo.Text
.
In this file, there are two key items:
MaxNodesPerBrowse
The maximum number of nodes that the OPC UA Server supports in a single request.
MaxBrowseContinuationPoints
The maximum number of that the OPC UA Server supports.
Possible values of this diagnostic item are as follows:
  • 0
    : Unlimited. OPC UA Connector sends as much as it has at any time.
  • 1-10000
    : OPC UA Connector sends no more than this amount per request.
  • -1
    : Default. Does not override the normal operation.
  • -2
    : Use the value of , even if it is the larger value or it is set to 0 (unlimited).
  • -3
    : Use the smaller value of and .
All other values are ignored.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_I2

Retained\@OPC_RelaxConnectionSecurityChecks

This diagnostic item offers an option to relax some security verifications, enabling communication with OPC UA Servers that deliver inconsistent endpoint descriptions between discovery requests and session creation responses. This option also permits communications with OPC UA Servers with duplicate or missing nonce encryption values.
When it is set to FALSE, full security checks are enabled.
When it is set to TRUE, the security checks are disabled on a per-session basis. You must ensure necessary precautions are taken when enabling it.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

@OPC_ReverseConnectClientURL

This diagnostic item indicates the network path to
FactoryTalk Linx
 OPC UA Connector. This diagnostic item is read-only and can only be set via the
Client Endpoint URL
 on the
OPC UA Servers
 tab. If the value of this diagnostic item is changed, the
FactoryTalk Linx
 OPC UA Connector service must be restarted.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_ReverseConnectEnabled

This diagnostic item indicates whether the Reverse Connection function is enabled. This diagnostic item is read-only and can only be set via the
Reverse Connect
 checkbox on the
OPC UA Servers
 tab. If the value of this diagnostic item is changed, the
FactoryTalk Linx
 OPC UA Connector service must be restarted.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@OPC_ReverseConnectFailedCount

This diagnostic item counts the number of occurrences when a reverse connection is broken. This diagnostic item is read-only.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

Retained\@OPC_ReverseConnectLogDiscoveredUrls

This diagnostic item indicates whether to log the URL and URI for the reverse connected OPC UA Server to FactoryTalk Diagnostic Log. This diagnostic item is read-only.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

@OPC_ReverseConnectServerUri

This diagnostic item indicates the retrieved URI of the reverse connected OPC UA Server. This diagnostic item is read-only.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_ReverseConnectServerURL

This diagnostic item indicates the URL of the reverse connected OPC UA Server. This diagnostic item is read-only.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_ReverseConnectStatus

This diagnostic item indicates the Reverse Connection status on the current endpoint. This diagnostic item is read-only.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_ReverseConnectSucceededCount

This diagnostic item counts the number of occurrences when a reverse connection and session are established. This diagnostic item is read-only.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

Retained\@OPC_SamplingRateOverrideRatio

When the requested update rate exceeds the value of
@OPC_SamplingRateOverrideThreshhold
 and the
@OPC_SamplingRateOverrideRatio
 is set to a value between 0 and 1 (exclusive), the requested update rate is multiplied by
@OPC_SamplingRateOverrideRatio
 to calculate the sampling rate that the OPC UA Connector will request the OPC UA Server to use.
Example 1
@OPC_SamplingRateOverrideThreshhold = 1.5 seconds
@OPC_SamplingRateOverrideRatio = 0.5
If the requested update rate is 1.0 second, the sampling rate is also set to 1.0 second.
If the requested update rate is 2.0 seconds, the sampling rate is set to 1.0 second.
Example 2:
@OPC_SamplingRateOverrideThreshhold = 1.0 seconds
@OPC_SamplingRateOverrideRatio = 0.25
If the requested update rate is 1.0 second, the sampling rate is set to 1.0 second.
If the requested update rate is 2.0 seconds, the sampling rate is set to 0.5 seconds.
Example 3: Sampling rate will always equal to the update rate.
@OPC_SamplingRateOverrideThreshhold = 1.0 second
@OPC_SamplingRateOverrideRatio = 0 or >= 1
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_R4

Retained\@OPC_SamplingRateOverrideThreshhold

This diagnostic item indicates the update rate at which the override kicks in.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_I4

@OPC_ServerLocales

This diagnostic item returns the list of locales that the OPC UA Server claims to support. The list may be empty. These values are downloaded directly from the OPC UA Server when the OPC UA Connector connects to it.
TIP:
These are retrieved from the OPC UA Server item "Root/Objects/Server/ServerCapabilities/LocaleId/Array"
Example contents include:
"en"
"de"
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_ServerOperationErrorRecoveryQty

This diagnostic item returns the number of server operation errors corrected in an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_ServerPerformanceBrowseRate

This diagnostic item returns a performance rating of an OPC UA Server, based on the amount of time required to browse a node.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_R8

@OPC_ServerPerformanceReadRate

This diagnostic item returns a performance rating of an OPC UA Server, based on the amount of time required to read a node.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_R8

@OPC_ServerPerformanceTranslateMsg

This diagnostic item returns the rate of tags transferred from an OPC UA Server to the OPC UA Connector in tags per second.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_ServerPerformanceTranslateRate

This diagnostic item returns a performance rating of an OPC UA Server, based on the amount of time required to translate a browse path to a node.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_R8

@OPC_ServerPerformanceUploadMsg

This diagnostic item returns the rate of tags uploaded from an OPC UA Server to the OPC UA Connector in tags per second.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BSTR

@OPC_ServerPerformanceUploadRate

This diagnostic item returns a performance rating of an OPC UA Server, based on the amount of time required to upload a tag value to a node.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_R8

@OPC_ServerPerformanceWriteRate

This diagnostic item returns a performance rating of an OPC UA Server, based on the amount of time required to write a value to a node.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_R8

@OPC_ServerUploadEmptyContinuationPointsQty

This diagnostic item returns the number of times the OPC UA Connector received an empty continuation point from the connected OPC UA Server. Continuation points are provided by the OPC UA Server to inform the OPC UA Connector that a data transmission is partial and more data is available. If the OPC UA Server provides the OPC UA Connector with an empty continuation point, there might be an error in the OPC UA Server.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPC_SessionSupportsTimestampsOnWritesStatus

This diagnostic item returns whether an OPC UA Server supports writing values with timestamps.
TRUE indicates that the OPC UA Server supports writing values with timestamps, while FALSE indicates that the OPC UA Server does not support writing values with timestamps. The default value is TRUE until the OPC UA Connector fails to write a value with a timestamp to the OPC UA Server.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_BOOL

@OPC_SubscriptionQty

This diagnostic item returns the number of subscriptions for an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector.
Resettable
No
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI4

@OPCtoDAQ_LongestTimeProcessingData_mSec

This diagnostic item returns the longest amount of time in milliseconds that an OPC UA Server or all OPC UA Servers connected to an OPC UA Connector spent processing data.
Resettable
Yes
Browse path for
All OPC UA Servers connected to an OPC UA Connector:
ConnectorName
::[
ServerName
]\@Diagnostic Items\GlobalRollup\
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\
FactoryTalk
 data type
VT_UI8

Retained\@OPC_TimestampToUse

This diagnostic item returns the UAC the source of the timestamp to be delivered with each tag value it receives and passes to a FactoryTalk Live Data client.
Possible values include:
  • 0 (default): Auto-select time stamp
  • 1: Use the OPC UA Server time stamp
  • 2: Use the Source time stamp
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BSTR

Retained\@OPC_MonitorItemTriggerMode

This diagnostic item returns FactoryTalk Linx OPC UA Connector the source timestamp to be delivered with each tag value it receives and passes to a FactoryTalk Live Data client when the source timestamp changes. The associated settings are on the user interface, and you can change the settings on
OPC UA Servers
.
Resettable
No
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_I4

Retained\@OPC_VerifyTagPath

This diagnostic item is turned on by default. It should only be turned off if the system has not been modified, for example, if the system has been locked down. Setting this diagnostic item to FALSE skips the verification phase and might speed up getting the initial update of data.
Improve startup performance the first time that a tag is used by skipping the tag verification step. The OPC UA Connector verifies tags by using the OPC UA TranslateBrowsePathToNodeIds service, which converts an OPC UA tag path to its . It can also be used if the OPC UA Server does not support this service.
When the OPC UA Connector initially connects to an OPC UA Server, the OPC UA Connector uploads the address space and saves it to a cache file. All tags in the OPC UA Server are considered "fresh". When a Live Data client requests data, it immediately subscribes for its value using the tag’s . If the OPC UA Connector is restarted and finds a cache file for the OPC UA Server, it considers all tags to be “stale”. When a Live Data client initially requests data for a tag, the OPC UA Connector behaves differently based on the value of this diagnostic item.
When turned on, the tag’s path is converted to a and is compared to the cached value. If the match it is considered to be "fresh" and verified.
When turned off, all tags are considered to be “fresh” and the cached is used without verification.
Resettable
Yes
Browse path for
An OPC UA Server:
ConnectorName
::[
ServerName
]\@Diagnostic Items\Retained\
FactoryTalk
 data type
VT_BOOL

@UAMethod_Call

This tag invokes the method. All required conditions must be satisfied, or an error occurs. When the method is executing in the OPC UA Server, this tag contains a value of
TRUE
. When the method is in any other state, the tag contains a value of
FALSE
.

@UAMethod_CallComplete

This item is set to FALSE when the call is invoked in the OPC UA Server.
This item is set to TRUE when a response is received from the OPC UA Server.

@UAMethod_CallCurrentState

This item returns the current internal state of the method when it is running.
Possible states are:
  • Error: An error occurred.
  • Waiting: Waiting for all inputs to arrive before the method is called.
  • Ready: All inputs have been received. If the method has no inputs, this state is reached immediately.
  • Queued: The method has been called by the client and the request has been queued up waiting to be sent to the OPC UA Server.
  • Executing: The method request has been sent to the OPC UA Server and is waiting for a response.
  • Processing Results: The OPC UA Server has responded and the OPC UA Connector is processing the results. This usually completes so quickly that this state never appears in a display.
  • Complete: Results have been processed and the method call is complete.
  • Timeout: Occurs when a response was not received from the OPC UA Server before the time period expired.

@UAMethod_CallCurrentTransactionID

This item returns the transaction ID assigned by the Live Data to this method call.

@UAMethod_CallElapsedTime

This item returns the current elapsed time in milliseconds.

@UAMethod_CallStatusCode

This item returns the numeric value of the returned status code. 0 means no errors occurred.

@UAMethod_CallStatusCodeText

This item returns the human-readable textual representation of the numeric status code.

@UAMethod_CallTimeout_ms

This item returns the time in milliseconds after which the method will be assumed to fail. This value is not retained and must be set each time the OPC UA Connector service is started. The best practice is to explicitly set this tag to the desired timeout value immediately prior to calling the method.

@UAMethod_ResultCorruptReplyData

This item returns the number of times the method call returned a success code and contained incorrectly formatted reply data. This prevents the values for Live Data tags from being extracted. The count will increase by one for each tag whose value cannot be extracted. This problem has been observed in methods containing structured-type arguments and multi-dimensional arrays. The OPC UA spec version 1.03 and earlier do not support matrices in structured types, and the OPC Server might not have upgraded to a later version or does not correctly support matrices. In this case, the method reply contains success codes, but values for Live Data tags cannot be extracted.

@UAMethod_ResultDiagnosticsDuplicateValues

This item returns the number of values written to the same input within the same transaction, either to the Call tag or to an InputArgument tag. You can reset this counter by writing any value to
@DP_CounterResetCmd
.

@UAMethod_ResultDiagnosticsFailed

This item returns the number of calls to the method that failed. You can reset this counter by writing any value to
@DP_CounterResetCmd
.

@UAMethod_ResultDiagnosticsSuccess

This item returns the number of calls to the method that succeeded. You can reset this counter by writing any value to
@DP_CounterResetCmd
.

@UAMethod_ResultDiagnosticsTimeouts

This item returns the number of calls to the method that failed due to a timeout. You can reset this counter by writing any value to
@DP_CounterResetCmd
.

Predefined redundancy diagnostic items

Available tags in the tag browser when redundancy is turned off
Redundancy-related System Tags
Description
@ComputerName
Without ",Sx" modifier, shows the current active machine name.
@LD_Redundancy_ForcePrimaryOffline
Forces primary to the inactive state.
@LD_Redundancy_GetStatus
Gets status of the DataProvider.
GetStatus values are as follows:
  • Redundancy State = Unknown (0x80000001)
  • Redundancy State = Not Loaded (0x80000002)
  • Redundancy State = Failed (0x80000003)
  • Redundancy State = Unknown (0)
  • Redundancy State = Loading/Offline (1)
  • Redundancy State = Starting (2)
  • Redundancy State = Ready (3)
  • Redundancy State = Available, // Active (4)
  • Redundancy State = Standby (5)
  • Redundancy State = Active_No_Partner (6)
  • Redundancy State = Active_Sync (7)
  • Redundancy State = Standby_Sync (8)
  • Redundancy State = Active_Ready (9)
  • Redundancy State = Standby_Ready (10)
When FactoryTalk Linx OPC UA Connector is configured with redundancy, enable this function for both servers:
  • @LD_Redundancy_GetStatus,S1
  • @LD_Redundancy_GetStatus,S2
@LD_Redundancy_GetStatusCode
Gets status code of the DataProvider.
Status codes and the corresponding states are as follows:
  • 0x80000001 (Redundancy State = Unknown)
  • 0x80000002 (Redundancy State = Not Loaded)
  • 0x80000003 (Redundancy State = Failed)
  • 0 (Redundancy State = Unknown)
  • 1 (Redundancy State = Loading/Offline)
  • 2 (Redundancy State = Starting)
  • 3 (Redundancy State = Ready)
  • 4 (Redundancy State = Available, // Active)
  • 5 (Redundancy State = Standby)
  • 6 (Redundancy State = Active_No_Partner)
  • 7 (Redundancy State = Active_Sync)
  • 8 (Redundancy State = Standby_Sync)
  • 9 (Redundancy State = Active_Ready)
  • 10 (Redundancy State = Standby_Ready)
When FactoryTalk Linx OPC UA Connector is configured with redundancy, enable this function for both servers:
  • @LD_Redundancy_GetStatusCode,S1
  • @LD_Redundancy_GetStatusCode,S2
@LD_Redundancy_GetSubstatus
Gets a human-readable string that provides a brief explanation of its status.
Substatus values are as follows:
  • No substatus info
  • Forced offline
  • Status toggle triggered
  • Normal operation
  • Communication to UA server failed
  • Address space not yet loaded
  • Service Shutting down
When FactoryTalk Linx OPC UA Connector is configured with redundancy, enable this function for both servers:
  • @LD_Redundancy_GetSubstatus,S1
  • @LD_Redundancy_GetSubstatus,S2
@LD_Redundancy_GetSubstatusCode
Gets the sub status codes.
Sub status codes and the corresponding states are as follows:
  • 0 (No substatus info)
  • 1 (Forced offline)
  • 2 (Status toggle triggered)
  • 3 (Normal operation)
  • 4 (Communication to UA server failed)
  • 5 (Address space not yet loaded)
  • 6 (Service Shutting down)
When FactoryTalk Linx OPC UA Connector is configured with redundancy, enable this function for both servers:
  • @LD_Redundancy_GetSubstatusCode,S1
  • @LD_Redundancy_GetSubstatusCode,S2
Available tags in the tag browser when redundancy is turned on
Redundancy-related System Tags
Description
@ComputerName
  • @ComputerName,S1
  • @ComputerName,S2
Shows the name of the machine, either 1 (primary) or 2 (secondary).
@LD_Redundancy_ForcePrimaryOffline,S1
Forces primary to the inactive state.
@LD_Redundancy_ForceSecondaryOffline,S2
Forces secondary to the inactive state.
@LD_Redundancy_GetStatus
  • @LD_Redundancy_GetStatus,S1
  • @LD_Redundancy_GetStatus,S2
Gets status of the DataProvider either 1 (primary) or 2 (secondary).
GetStatus values are as follows:
  • Redundancy State = Unknown (0x80000001)
  • Redundancy State = Not Loaded (0x80000002)
  • Redundancy State = Failed (0x80000003)
  • Redundancy State = Unknown (0)
  • Redundancy State = Loading/Offline (1)
  • Redundancy State = Starting (2)
  • Redundancy State = Ready (3)
  • Redundancy State = Available, // Active (4)
  • Redundancy State = Standby (5)
  • Redundancy State = Active_No_Partner (6)
  • Redundancy State = Active_Sync (7)
  • Redundancy State = Standby_Sync (8)
  • Redundancy State = Active_Ready (9)
  • Redundancy State = Standby_Ready (10)
@LD_Redundancy_GetStatusCode
  • @LD_Redundancy_GetStatusCode,S1
  • @LD_Redundancy_GetStatusCode,S2
Gets status of the DataProvider either 1 (primary) or 2 (secondary).
Status codes and the corresponding states are as follows:
  • 0x80000001 (Redundancy State = Unknown)
  • 0x80000002 (Redundancy State = Not Loaded)
  • 0x80000003 (Redundancy State = Failed)
  • 0 (Redundancy State = Unknown)
  • 1 (Redundancy State = Loading/Offline)
  • 2 (Redundancy State = Starting)
  • 3 (Redundancy State = Ready)
  • 4 (Redundancy State = Available, // Active)
  • 5 (Redundancy State = Standby)
  • 6 (Redundancy State = Active_No_Partner)
  • 7 (Redundancy State = Active_Sync)
  • 8 (Redundancy State = Standby_Sync)
  • 9 (Redundancy State = Active_Ready)
  • 10 (Redundancy State = Standby_Ready)
@LD_Redundancy_GetSubstatus
  • @LD_Redundancy_GetSubstatus,S1
  • @LD_Redundancy_GetSubstatus,S2
Gets a human-readable string that provides a brief explanation of its status, either 1 (primary) or 2 (secondary).
Substatus values are as follows:
  • No substatus info
  • Forced offline
  • Status toggle triggered
  • Normal operation
  • Communication to UA server failed
  • Address space not yet loaded
  • Service Shutting down
@LD_Redundancy_GetSubstatusCode
  • @LD_Redundancy_GetSubstatusCode,S1
  • @LD_Redundancy_GetSubstatusCode,S2
Gets sub status codes of either 1 (primary) or 2 (secondary).
Sub status codes and the corresponding states are as follows:
  • 0 (No substatus info)
  • 1 (Forced offline)
  • 2 (Status toggle triggered)
  • 3 (Normal operation)
  • 4 (Communication to UA server failed)
  • 5 (Address space not yet loaded)
  • 6 (Service Shutting down)
@OPC_ServerEndpoint
  • @OPC_ServerEndpoint,S1
  • @OPC_ServerEndpoint,S2
Shows the OPC UA Server Endpoint URL, either 1 (primary) or 2 (secondary).
Current implementation
Server Status
Status Value
Substatus Value
When service is shutting down
0x80000002: "Not Loaded"
6: "Service Shutting down."
When Communications to UA server is down
0x00000002: "Starting"
4: "Communication to UA server failed."
When address space is still being loaded, either from disk or upload
0x00000002: "Starting"
5: " Address space not yet loaded."
When DataProvider is forced offline
0x00000002: "Starting"
1: "Forced offline."
When running normally
0x00000004: "Available"
3: "Normal operation."
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