Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual User Manual
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Error Reporting
Chapter 7
7Ć32
8.
Number of NAKs passed from the separator to the transmitter.
9.
Number of timeouts waiting for a response.
10. Number of ENQs sent.
11. Number of messages that could not be successfully sent.
12. Number of reply messages that could not be forwarded and which
were destroyed.
13. 16-bit count of messages received.
14. Not used.
15. 16-bit count of ACKs sent.
16. Not used.
17. Number of NAKs sent.
18. Number of ENQs received.
19. Number of retransmissions received and ACKed. A retransmission
is a message that has a transparent word, command, and source that
match the previous message.
20. Number of STX (full-duplex mode) or SOH (half-duplex mode)
received. This is in effect a count of the number of messages that
were started.
21. Number of messages, characters, or message fragments that were
ignored.
22. Number of messages that were aborted by receipt of a DLE ENQ.
23. Number of messages that were aborted by the receipt of an
unexpected control code other than DLE ENQ.