6F3B0253
10.Troubleshooting
10.1.5Output check
If the output status monitored on the programming tool is normal but the external output device (load) is not operated normally, check the following points:
No
Is the output status LED changed ON/OFF according to the program execution ?
Yes 
Check the voltage between the output terminal and its common terminal.
It should be 0V when the output is ON, and it should be the circuit voltage when the output is OFF.
If it is the circuit voltage at the output is ON, or if it is 0V at the output is OFF with the load ON, the
If it is 0V and the load is also OFF, check the output power and the output cable connections.
Normal
Check the voltage at the load 
Check whether the I/O allocation table is identical to the actual I/O configuration
If it is not normal, check the output cable connections.
If it is normal, check the specification of the load, also check environmental factors.
If identical, the
Not identical
Execute the automatic I/O allocation, and check whether the I/O allocation table is now identical to the actual I/O configuration
Still not identical 
If it becomes identical, execute the EEPROM write operation.
Is the allocation mismatch for a specific I/O module?
If so, the card, module or expansion unit may be faulty. For expansion unit, check the expansion cable also.
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