Channel X Diagnostics dialog box parameters (Modbus Master)
When the device is online, the
Channel
dialog box shows real-time statistics for the Modbus Master. This information is used for performance and error management.X
DiagnosticsParameter | Description |
|---|---|
Message Packets Transmit Count | Number of message packets sent by the master. |
Message Packets Receive Count | Number of message packets received by the master. |
Link Layer Error Count | Number of errors returned. |
Link Layer Error Code | The error code associated with the error. |
Server Message Count | Number of messages addressed to remote devices acting as servers, or broadcast, that the remote devices have processed. |
Server No Response Count | Number of messages addressed to a remote device where the server does not respond. |
Server NAK Count | Number of messages addressed to the slave for which it returned a Negative Acknowledge (NAK) exception response. |
Server Busy Count | Number of messages addressed to the slave for which it returned a Slave Device Busy exception response. |
Retry Count | Number of times the master attempts to transmit a command but fails due to a parity error, CRC error, or response timeout. |
ERR1 Illegal Function Count | Number of times the function code sent by the master is not supported by the slave or has an incorrect parameter. |
Last Device Reporting ERR1 | The last device reporting an ERR1. |
ERR2 Illegal Data Address Count | Number of times the data address referenced in the master command does not exist in the slave, or access to that address is not allowed. |
Last Device Reporting ERR2 | The last device reporting an ERR2. |
ERR3 Illegal Data Value Count | Number of times the data value being written is not allowed. The value is out of range or being written to a read-only address. |
Last Device Reporting ERR3 | The last device reporting an ERR3. |
ERR4 Slave Device Failure Count | Number of times an unrecoverable error occurred while the slave was attempting to perform the requested action. |
ERR5 Acknowledge Count | Number of times the slave accepted the request, but a long duration of time will be required to process the request. |
ERR6 Slave Device Busy Count | Number of times the slave is currently processing a long-duration command and is busy. |
ERR7 Negative Acknowledgment Count | Number of times the slave cannot perform the program function received in the command. |
ERR8 Memory Parity Error Count | Number of times the slave attempted to read extended memory, but detected parity error in memory. |
Non-Standard Response Count | Number of times an error code greater than 8 was returned by the slave. |
Last Device Reporting ERR4 to ERR8 or Non-Standard Response | The last device reporting ERR4 to ERR8 or a non-standard response. |
Field Power | Shows whether field power is present on the channel. |
Field Power On Timestamp | Shows the timestamp of the last time field power turned on in YYYY-MM-DD-HH:mm:SS.mmm format.
|
Field Power Off Timestamp | Shows the timestamp of the last time field power turned off in YYYY-MM-DD-HH:mm:SS.mmm format.
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Reset Diagnostics | Resets all counters to zero. |
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