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Troubleshooting ( continued )
MS LED status
Normal status : Green light ON
Fatal failure : Red light ON
1
The effect of noise is possible. Check
the installation conditions. If the trouble
cannot be solved even if the installation
conditions are checked, contact our
sales branch.
NS LED status
Offline/Power is OFF : Light OFF
Online/Communication is not established :
Green flashing
Online/Communication is established :
Green light
ON
Minor communication error occurred :
Red flashing
Fatal communication error occurred :
Red light
ON
2
Check the signal line from PLC is
connected.
Check the wiring and pin number.
Check the data rate and address
setting.
SOL LED light OFF
3
Check the power for solenoid
valves/output (24VDC) is supplied.
Check the power supply voltage for
solenoid valves/output does not drop
under 20V.
Item
No.
Solution/Corrective action
EtherNet/IP compatible communication
PWR LED light OFF
4
Check the power for input and control
(24VDC) is supplied.