Publication 1747-RM001G-EN-P - November 2008
SLC Communication Channels 13-95
Click the Channel 0 - Ext tab to display data for the PL diagnostic counters.
See Table 13.28 for information regarding the diagnostic counter data
displayed.
Table 13.27 SLC 5/03 and Higher Channel 0 Modbus RTU Master Channel Status
Data Link Layer Diagnostic Counters (Modbus Master RTU)
Status Field Diagnostic File Location Definition
DTR Word 0; Bit 4 DTR (Data Terminal Ready)
DCD Word 0; Bit 3 DCD (Data Carrier Detect)
DSR Word 0; Bit 2 DSR (Data Set Ready)
RTS Word 0; Bit 1 RTS (Request to Send)
CTS Word 0; Bit 0 CTS (Clear to Send)
Messages Sent Word 1 Total Message Packets Sent
Messages Received Word 2 Total Message Packets Received
Link Layer Error Count Word 3 Link Layer Error Count
Link Layer Error Code Word 4 Link Layer Error Code
Table 13.28 SLC 5/03 and Higher Channel 0 Modbus RTU Master Channel Status
PL Diagnostic Counters (Modbus Master RTU)
Status Field/Description Diagnostic File Location
Error Code 1 Counter Word 7
Last Device Reporting Error Code 1 Word 8
Error Code 2 Counter Word 9
Last Device Reporting Error Code 2 Word 10
Error Code 3 Counter Word 11
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