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-31-
No.EX##-OME0015-C
Troubleshooting table
Fault No.1
Problem
Possible cause
Investigation method
Countermeasures
Re-wire the power supply
cable. (Replace the cable if it
is damaged).
Incorrect wiring of
the power supply
for DeviceNet
TM
communication
Check the power supply cable connections and
check for broken wires.
Correct the wiring of the
power supply cable.
SI unit PWR
LED is OFF
Failure of the
power supply for
DeviceNet
TM
communication
Check the supply voltage of the DeviceNet
TM
power supply.
Supply 11 to 25 VDC to the
DeviceNet
TM
power supply.
Fault No.2
Problem
Possible cause
Investigation method
Countermeasures
Re-wire the DeviceNet
TM
cable. (Replace the cable if it
is damaged).
Incorrect wiring of
the DeviceNet
TM
cable
Check the DeviceNet
TM
cable connections and
check for broken wires.
Correct the wiring of the
DeviceNet
TM
cable.
SI unit
MOD/NET LED
is OFF
Failure of the
power supply for
the DeviceNet
TM
master station
Check the wiring of the power supply for the
DeviceNet
TM
master station.
Check the power supply for
the DeviceNet
TM
master
station.