Rockwell Automation 1770, D17706.5.16 Ref Mnl DF1 Protocol Command - Manual (Page 144)

9–6 Diagnostic Counters
Publication 1770Ć6.5.16 - October 1996
1747ĆL541, ĆL542, and ĆL543 (SLC 5/03 and SLC 5/04 processors)
DF1 Diagnostic Counters
This counter byte Counts the number of
0, 1
RSĆ232 modem line status:
• Bit 0 = CTS input line status
• Bit 1 = RTS output line status
• Bit 2 = DSR input line status
• Bit 3 = DCD input line status
• Bit 4 = DTR output line status
2, 3 Total message packets sent
4, 5 Total message packets received
6, 7 Undelivered message packets
8, 9 Message packets retried
10, 11 Normal station poll list last scan time (100 ms increments)
12, 13 Normal station poll list maximum scan time (100 ms increments)
14, 15 NonĆresponse due to bad message packets detected
16, 17 Unused
18, 19 Duplicate message packets received
20, 21 Priority station poll list last scan time (100 ms increments)
22, 23 DCD recovery field (times DCD toggled off and on)
24, 25 Lost modem field (times modem has been disconnected)
26, 27 Priority station poll list maximum scan time (100 ms increments)