Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 110)

Start–up and Troubleshooting
Chapter 9
9-8
Figure 9.3
REMOTE/LOCAL FAULT Bit Significance
AC FUSE
PLC
2/20
Local Fault
Possible Sources:
•
Disconnected data highway cable
Power off at receiving station
interface module
Unused remote staiton no. address
Station interface moduel at local
or remote station has disconnected
itself as a result of link monitoring
Automatic timeout at sending
station
•
•
•
•
AC FUSE
PLC
2/20
Remote Fault
Possible Sources:
Remote station processor
in program load (or prog)
mode
•
Command not executed due to
module switch setting at
receiving station
Fault at remote station processor
Power off at remote station processor
Disconnected data highway/processor cable
Error detected in communication zone of
program at remote station proccessor
•
•
•
•
•
Processor
Processor
Receiving (Remote) Station
10866-I
Sending
Station
ERROR CODE Storage Word
The ERROR CODE storage word is especially useful for station start-up.
The codes displayed in the lower 2 digits of the ERROR CODE word may
indicate an error in programming, switch-setting, or certain other
conditions that prevent normal communication adapter module operation.
The ERROR CODE storage word is addressed by the second GET
instruction in the header rung (Refer to Figure 9.4.) This is the first rung
of the communication zone of program.