Rockwell Automation 1770, D17706.5.16 Ref Mnl DF1 Protocol Command - Manual (Page 184)

10–13 Diagnostic Status Information
Publication 1770Ć6.5.16 - October 1996
1775ĆKA, ĆS5 and ĆSR5 Status Bytes
Bytes Bits Contents Description
1 0 - 1 Operating status of
PLCĆ3 processor
0 = Program mode
1 = Test mode
2 = Run mode
2 Not used
3 0 = Normal
1 = Major processor fault
4 0 = Normal
1 = Shutdown request
5 0 = Normal
1 = Shutdown in effect
6 - 7 Not used
2 0 - 3 Type of node interface
and processor
6 = 1775ĆKA - Data Highway port, 1775ĆS5, or 1775ĆSR5
7 = 1775ĆKA - RSĆ232ĆC port
4 - 7
and processor 7 = 1775ĆKA - RSĆ232ĆC port
12 = 1775ĆS5,ĆSR5 (new revisions only)
3 all Current context
(stored in bits 4 to 7)
4 all Thumbwheel number
5 - 6 all Mode control word The logical address of the mode control word is E0.0.0.8.
7 - 8 all Starting byte address of diagnostic
counters and timers
There is a separate block of diagnostic timers and counters
for the DH port and the RSĆ232 port. The address given here
is for the port that received the diagnostic status command.
9 0 - 4 Series and revision number of 0 = Revision A
the module 1 = Revision B, etc.
5 - 7 The 1775ĆS5 and 1775ĆSR5 (series A)
appear as series C modules.
0 = Series A
1 = Series B, etc.
10 all Not used Not used
11 - 14 all The physical address of the unused
word of PLCĆ3 system memory.
The physical address corresponding to the logical address
E60.0.0.0. This is the last word to read or write in an upload
or download.
15 - 18 all The total number of words in the PLCĆ3
system memory (both used and unused)