
9–26 Diagnostic Counters
Publication
17706.5.16 - October 1996
Cat. Nos. Link Pages
1785KE DH+ 9-11
1785KA3 DH+ 9-28
1785KA DH 9-26
1785KA DH+ 9-27
DH+
1785KA5
DH485
9-29
1785L11B, L20B, L30B, L40B, L60B, L80B processors DH+ 9-30
1785L20E, L40E, L40L, L60L, L80E processors DH+ 9-32
1785KA DH Diagnostic Counters
This counter byte Counts the number of
0 Times received ACKs with a bad CRC.
1 Timeouts expired with no ACK received.
2 Mastership contentions.
3 Errors in received ACK.
4 Sum of bytes 1, 2, and 4.
5 WACKs received; stopped sending for a while.
6 Times the master died (assumed mastership).
7 False polls: no answer to poll of size = 1.
8 ACKs received when not master.
9 Received frames that were too small.
10 Received frames that were with SRC = DST.
11 Unused.
12 Received frames containing a bad CRC.
13 Received frames that were too long.
14 Times there was no buffer for the received message, WACK sent.
15 Frame retransmissions received.
16 Received frames aborted (line noise).
17, 18 Messages successfully sent (low byte first).
19, 20 Messages successfully received (low byte first).
21, 22 Commands successfully sent (low byte first).
23, 24 Replies successfully received (low byte first).
25, 26 Commands successfully received (low byte first).
27, 28 Replies successfully sent (low byte first).
29 Replies that could not be sent.
1785 Cat. Nos.
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