SMC Networks EX600-WD Series, Operation Manual

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Problem
No.
Phenomenon Possible causes Investigation and countermeasures
6
Abnormal digital
input device
operation
Input type does not match.
If the polarities (PNP, NPN) of the remote
and digital input unit do not match,
replace one of them to make the
combination match.
Input power supply voltage for control
decreased
Check that a voltage of 24 VDC+/-10% is
applied.
Wiring or connection is defective.
Connect the wiring between the remote
and the digital input equipment correctly.
Remote
Replace the remote and check the
operation.
Digital input equipment broken
Replace the digital input equipment, and
check the operation. Or, refer to
Troubleshooting for the applicable digital
input equipment.
Abnormal digital
output
equipment
operation
Mismatched output type
If the polarities (PNP, NPN) of the remote
and digital output unit do not match,
replace one of them to make the
combination match.
Output power supply voltage decreased
Check if the PWR LED of the remote is
turned ON in green.
If it is OFF or a red LED flashes, supply a
voltage of 24 VDC +/-10% to the power
supply for output.
Wiring or connection is defective.
Connect the wiring between the remote
and the digital output equipment correctly.
Remote malfunction
Replace the remote with a normal one,
and check the operation.
Digital output equipment broken
Replace the digital output equipment, and
check the operation. Or, refer to
Troubleshooting for the applicable digital
output equipment.
Program error
Check that the ladder logic program
works correctly.
7
NFC
communication
error
NFC communication is not established
(communication failure)
Check the following items and check the
operation again.
- Confirm that the settings of the NFC port
and PaSoRi of the PC are correct.
- Check that the specifications of the NFC
reader / writer to be used are
appropriate.
- Confirm that the NFC reader / writer
are connected correctly.
- The communication distance is outside
of the NFC range. Place the body (area
close to NFC antenna) close to the
NFC reader / writer.
NFC reader/writer broken
Replace the NFC reader / writer and
check the operation. If the error is not
restored after replacement, stop using the
equipment and contact your SMC sales
representative.