Rockwell Automation 6001-F2E AB STANDARD DRIVER SFTW - Manual (Page 53)

Message Packet Formats for the
Basic Command Set
Appendix C
C-4
The table below contains diagnostic read reply values for:
SLC-500
APS (COM1)
1784-KR Interface Module
Table C.D
Diagnostic Read Reply Values for SLC-500, APS, and 1784-KR
This Byte Means
0 Total packets received, low byte
1 Total packets received, high byte
2 Total messagaes sent, low byte
3 Total messages sent, high byte
4 Retries
5 Retry limit exceeded
6 NAK, no memory sent
7 NAK, no memory received
8 Bad messages received
9 Reserved
Diagnostic Read Reply
(Diagnostic Counters)