23
6
Troubleshooting
Symptom
Verification
Countermeasure
Explanation
Page
Power lamp
does not light
up
Is the power supply
voltage correct?
Make sure the voltage level is
within 24 V ±10%
Is the power supply cable
connected correctly?
Wire correctly
Units wired
communication
is not possible
Is the connector properly
connected correctly?
Ensure it is correctly set and
connected
Is the terminating
resistor correctly set and
connected?