Troubleshooting
Adapter Mode
5-14
Classic PLC-5
processors only
Troubleshooting – Classic PLC-5 Processors (except PLC-5/10) in Adapter Mode
Indicator
Color
Description
Probable Cause
Recommended Action
REM I/O
green
(steady)
active remote I/O link
normal operation
none
green
(blinking)
remote I/O active and host
processor is in program load or
TEST mode
normal operation
none
red
(steady)
no communication with host
processor
duplicate station
address selected
Correct station address
green
(sporadic)
bad communication with host
processor
Check connections
off
no communication with host
processor
no action required
COMM
BATT
FAULT
REM I/O
PROC
ACTIVE
RUN
ADPT
FORCE
REM
R
U
N
P
R
O
G