Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 140)

Error Code Listing
Appendix A
A-2
Code Meaning
STS Byte
of Reply
Message
(in Hex)
COMMUNICATIONS ERRORS
(MAY BE DISPLAYED IN CONJUNCTION WITH REMOTE/LOCAL FAULT BITS)
30
31
32
33
34
35
36 Processor memory discrepancy
Controller communications problem. May be processor fault.
Improper command message size
Invalid command code
Invalid station number
Attempt to send unprotected command invalid
Command execution aborted by sending station processor
37
38
50
51
52
53
54
55 Command execution aborted. Execution time exceeds timeout preset value.
Local processor entered the program mode
Processor communications problem. May be processor fault.
Invalid transparent word in reply message
No communication zone rungs in program
Reply not expected. (Reply received, but START bit is OFF)
Processor memory not in format for communication
Invalid reply. (Reply received, but communication zone rungs are incorrectly
entered. Or, reply received when processor mode select keylock switch is in
the PROGRAM LOAD POSITION.) Program status indicator (PROG) may
be ON to indicate this type of error condition.
May mean memory access rung missing for received protected command
56
57
81
82
83
84
85
10
30
40
50
Incorrect sequence number in reply. (Refers to transparent word in
message format.)
Reply message is of incorrect size
Illegal command
Station processor communication problem
Remote station processor faulted or OFF
I/O fault at remote station processor
Transmitted command disallowed by switch setting or memory access rung
programming at remote station
86
87
88
89
8B
92
93
60
70
80
90
B0
02
03
Transmitted command disallowed by switch setting at remote station
Remote station processor in PROG or PROGRAM LOAD mode
Communication zone invalid at remote station processor. Program
status indicator (PROG) may be ON at that station.
Remote station communication adapter module unable to buffer received
command in memory
Remote station is in download mode; or error in download command; or
operation not allowed in upload or download mode; or operation not
allowed when not in download mode.
Destination station fails to respond
Contention between master stations prevents message transmission