Data service option capability differences
The following table shows the capabilities of FactoryTalk Application and FactoryTalk Standalone Data Service.
Capability | FactoryTalk Application | FactoryTalk Standalone Data Service |
|---|---|---|
Client egress protocols | OPC DA, OPC UA, DDE, RTD, and MQTT | OPC DA, OPC UA, DDE, RTD, and MQTT
IMPORTANT:
The OPC UA server only supports the custom namespace.
|
Configuration | Settings in FactoryTalk Linx Gateway and FactoryTalk Administration Console | Settings in FactoryTalk Linx Gateway |
Shortcut data sources | All FactoryTalk Linx shortcut types, OPC UA endpoints and OPC DA servers, direct connection or through Remote Proxy service, offline tag browsing, and Resource and Status service | Processor shortcut for Individual or redundant (with IP address swapping) Logix controllers with version 18 or later, direct connection only (No proxy service support), and no offline tag browsing |
OPC DA capacity | Equal to or less than 200,000 tags | Equal to or less than 200,000 tags |
Scalability | One to ten servers and dozens to hundreds of controllers | One computer and smaller configurations with few dozen controllers |
Namespace mode | Folders with scalar data for OPC UA, OPC DA, RTD, and DDE Tag List for OPC
UA Custom namespace for OPC UA, RTD, DDE, and MQTT | Folders with scalar data for OPC DA, RTD, and DDE Custom namespace for OPC
UA, RTD, DDE, and MQTT |
Data extensions | FactoryTalk Linx @predefines and tag modifiers. For example, TC, S, and L | Not all @predefines and no modifiers |
Metadata | Logix Extended Tag properties and tag-based alarms | None |
Tag/Item reference format | FactoryTalk Live Data format (different from RSLinx Classic) | Format matches to RSLinx Classic (shortcut name used for the topic) |
Data value delivery | System loading can cause newer values to overwrite previous values before
delivery to client | Better for delivering continuous value changes |
Security | CIP Security to Logix, FactoryTalk Security, OPC DA Packet integrity and confidentiality, and OPC UA client data access control | FactoryTalk Security and OPC DA Packet integrity and confidentiality (no CIP Security) |
Server high availability | Redundant FactoryTalk Linx, OPC UA Connector and OPC DA and UA servers | None |
Communication data sharing | Data shared with other FactoryTalk software | Requires its own controller connection and no sharing |
Backup and restore | Supported via FactoryTalk Administration Console | Supported via FactoryTalk Administration Console |
FactoryTalk Live Data Test Client operation | Interface with FactoryTalk Linx, OPC UA Connector or OPC DA servers. For example, FactoryTalk Linx Gateway's OPC DA Server interface | Limited to data from FactoryTalk Linx Gateway's OPC DA Server interface |
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