Channel X Diagnostics dialog box parameters (Modbus Slave)

When the device is online, the
Channel
X
 Diagnostics
 dialog box shows the Modbus Slave diagnostic counters. This information is used for performance and error management.
Parameter
Description
Message Packets Transmit Count
Number of message packets sent by the slave.
Message Packets Receive Count for This Slave
Number of message packets received by the slave.
Message Packets Receive Count
Total number of message packets received on the bus, including packets not addressed to this server.
Link Layer Error Count
Number of errors returned.
Link Layer Error Code
The error code associated with the error.
Bus Message Count
Number of messages that the slave has detected on the communications system.
Bus Communication Error Count
Number of CRC errors encountered by the slave.
Bus Exception Error Count
Number of Modbus exception responses returned by the slave.
Bus Character Overrun Count
Number of messages addressed to the slave that it could not handle due to a character overrun condition.
A character overrun is caused by data characters arriving at the port faster than they can be stored, or by the loss of a character due to a hardware malfunction.
Presentation Layer Error Code
The error code of the presentation layer.
Presentation Layer Error Count
Number of presentation layer error codes.
Execution Function Error Code
The function code that caused the last Exception Error.
Last Transmitted Exception Code
The exception code of the last function code that was in error.
Data File Number of Error Request
The data file number of last error request.
Element Number of Error Request
The data element number of the last error request.
Function Code 1 Message Counter
Number of Function Code 1 messages processed by the remote device.
Function Code 2 Message Counter
Number of Function Code 2 messages processed by the remote device.
Function Code 3 Message Counter
Number of Function Code 3 messages processed by the remote device.
Function Code 4 Message Counter
Number of Function Code 4 messages processed by the remote device.
Function Code 5 Message Counter
Number of Function Code 5 messages processed by the remote device.
Function Code 6 Message Counter
Number of Function Code 6 messages processed by the remote device.
Function Code 15 Message Counter
Number of Function Code 15 messages processed by the remote device.
Function Code 16 Message Counter
Number of Function Code 16 messages processed by the remote device.
Function Code 22 Message Counter
Number of Function Code 22 messages processed by the remote device.
Function Code 23 Message Counter
Number of Function Code 23 messages processed by the remote device.
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.
  • YYYY = year
  • MM = month
  • DD = day
  • HH = hour (24 hour)
  • mm = minutes
  • SS = seconds
  • mmm = milliseconds
Field Power Off Timestamp
Shows the timestamp of the last time field power turned off in YYYY-MM-DD-HH:mm:SS.mmm format.
  • YYYY = year
  • MM = month
  • DD = day
  • HH = hour (24 hour)
  • mm = minutes
  • SS = seconds
  • mmm = milliseconds
Reset Diagnostics
Resets all counters to zero.
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