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Description
Check item
of problem
Power supply
B2-1
(for
communication)
B2-2
Cables
A station cannot
be linked
occasionally.
B2-3
Noise
Device station
B2-4
failure
352
Check contents
Is any voltage drop
occurring?
Is there any
cable/connector
disconnected or out of
specifications?
Is there any noise on the
transmission cable?
Is the device station failed?
Check procedure
Check the power supply at
the faulty station.
Check the connection cable
at the faulty station.
Check the cable of the
closest faulty station from the
master station, when multiple
stations are sequentially
faulty to the terminal of the
transmission path.
Check if the transmission
cable and power wiring are
separated enough.
Check if the FG is separated
from the power system GND.
Reduce the transmission
speed and then check the
occurrence frequency.
Replace the failed station and
check the operation.
Corrective action
Set the supplied voltage to
within the specified range.
Connect the corresponding
cable properly.
Wire the transmission cable
and power wiring as
separated as possible.
(recommended to keep a
distance of more than
100mm)
Set FG and the power
system GND apart.
Execute the protection
against noise.
Reduce the transmission
speed.
Fix or replace the failed
device station.
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Table of Contents
Troubleshooting
