Rockwell Automation 1770, D17706.5.16 Ref Mnl DF1 Protocol Command - Manual (Page 167)

9–29 Diagnostic Counters
Publication 1770Ć6.5.16 - October 1996
1785ĆKA5 DH+ Diagnostic Counters
This counter byte Counts the number of ➀
0
1
Timeouts that expired with no ACK received.
2 Transmit retries exhausted.
3 NAKs due to illegal protocol operations.
4 NAKs due to bad LSAPs.
5 NAKs due to memory available.
6
7
8
9
Duplicate tokens detected.
10 Duplicate nodes detected.
11 Token pass timeouts.
12 Token pass retries exhausted.
13 Claim token sequences entered.
14 Tokens claimed.
15 Bad CRC in received frame.
16
17
18
NAK due to no memory sent.
19
20
21
Frame transmissions received.
22 Receive frames aborted (noise).
23, 24 Messages successfully sent (low byte first).
25, 26 Messages successfully received (low byte first).
27, 28
29, 30
31, 32
33, 34
35
36
Number of active nodes.
➀ A shaded cell means the counter is present but not functional.