User manual

Troubleshooting
Scanner Mode 5-15
Classic PLC-5
processors only
Troubleshooting – Classic PLC-5 Processors (except PLC-5/10 and PLC-5/12) in Scanner Mode
Indicator Color Description Probable Cause Recommended Action
REM I/O green
(steady)
active remote I/O link normal operation none
red
(steady)
remote I/O link fault wiring, adapter
module(s)
• Check all connections, check adapter
module(s)
• If you have 6200 Series Software, put the
processor in PROG mode and do an auto
configure for remote racks (see your 6200
Series Software documentation)
green/red
(blinking)
partial remote I/O link fault one or more
remote I/O
chassis faulted
• Check status bits in I/O status file (element #7)
to identify faulted chassis number; check
wiring, adapter module(s), power supplies
• If you have 6200 Series Software, put the
processor in PROG mode and do an auto
configure for remote racks (see your 6200
Series Software documentation)
off no remote I/O selected none
COMM
BATT
FAULT
REM I/O PROC
ACTIVE
RUN
ADPT FORCE
REM
R
U
N
P
R
O
G