Rockwell Automation 1775-KA PLC-3 Communication Adapter Module User Manual User Manual
Page 210
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Diagnostic Port Counters
Appendix C
CĆ2
At this
byte offset:
This counter is stored:
1,2.
Command messages sent
3,4.
Reply messages received
5,6.
Command messages received
7,8.
Reply messages sent
9,10.
ACKs received
11,12.
ACKs sent
13,14.
NAKs received
15,16.
NAKs sent
17.
Undeliverable reply messages
18,19.
Computer link timeout (preset to 500 msec)
20.
Maximum number of NAKs accepted per message (preset
to 10)
21.
Maximum number of ENQs sent per messge (preset to 10)
22.
Current NAK count
23.
Current ENQ count
Modem Port Counters
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