
10–13Diagnostic Status Information
Publication
17706.5.16 - October 1996
1775KA, S5 and SR5 Status Bytes
Bytes Bits Contents Description
1
0 - 1
Operating status of
PLC3 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
6 = 1775KA - Data Highway port, 1775S5, or 1775SR5
=
-
4 - 7
an
processor 7 =
775
-
port
12 = 1775S5,SR5 (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 RS232 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 1775S5 and 1775SR5 (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 PLC3 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 PLC3
system memory (both used and unused)
Komentarze do niniejszej Instrukcji