User manual

Troubleshooting
Communication Channel 5-6
troubleshooting – PLC-5/40L and PLC-5/60L processor (only) communication channel continued...
Indicator Color
Channel
Mode
Description Probable Cause Recommended Action
2
(continued)
red
(steady)
extended
local I/O
scanner
hardware fault hardware error Turn power off, then on.
Check that the software
configurations match the
hardware set-up. Replace
the processor.
red
(blinking
rapidly or
slowly)
extended
local I/O
scanner
all adapters faulted • cable disconnected or
broken
• terminator off
• power off at
remote racks
• Repair cable
• Replace or repair
terminator
• Restore power to
racks
off extended
local I/O
scanner
channel off-line channel is not
being used
Place channel online
if needed
BATT
PROC
FORCE
COMM
PROG
RUN
R
E
M