Troubleshooting ( continued )

EtherNet/IP compatible communication

No.

Item

Solution/Corrective action

1

MS LED status

The effect of noise is possible. Check

 

Normal status : Green light ON

the installation conditions. If the trouble

 

Fatal failure : Red light ON

cannot be solved even if the installation

 

 

conditions are checked, contact our

 

 

sales branch.

 

 

 

2

NS LED status

Check the signal line from PLC is

 

Offline/Power is OFF : Light OFF

connected.

 

Online/Communication is not established :

Check the wiring and pin number.

 

Green flashing

Check the data rate and address

 

Online/Communication is established :

setting.

 

Green light ON

 

 

Minor communication error occurred :

 

 

Red flashing

 

 

Fatal communication error occurred :

 

 

Red light ON

 

 

 

 

3

SOL LED light OFF

Check the power for solenoid

 

 

valves/output (24VDC) is supplied.

 

 

Check the power supply voltage for

 

 

solenoid valves/output does not drop

 

 

under 20V.

 

 

 

4

PWR LED light OFF

Check the power for input and control

 

 

(24VDC) is supplied.

 

 

 

34

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Sierra Monitor Corporation EX250-SEN1 Troubleshooting, EtherNet/IP compatible communication, Green light on

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