
-25-
No.EX##-OMK0004-A
Trouble No.12
Trouble
Possible cause
Investigation method of cause
Remedy
The green SI
unit MS_LED
flashes.
Setting error.
Check the setting of the SI unit.
Review the setting of the SI
unit.
Trouble No.13
Trouble
Possible cause
Investigation method of cause
Remedy
The SI unit
NS_LED goes
off.
IP address not set.
Check the setting of IP addresses.
Review the setting of IP
addresses.
Trouble No.14
Trouble
Possible cause
Investigation method of cause
Remedy
The red SI unit
NS_LED lights
up.
Duplicated IP
address.
Check that there is no duplicated IP
address.
Review the setting of IP
addresses.
Trouble No.15
Trouble
Possible cause
Investigation method of cause
Remedy
Check that there is no broken
communication line or loosened connector.
Review the connection
condition of the
communication line. (If the
cable is broken, replace it
with a new one.)
The red SI unit
NS_LED
flashes.
Broken
communication line.
Check if the PLC is operating normally.
Review the setting of PLC.
Trouble No.16
Trouble
Possible cause
Investigation method of cause
Remedy
Check the address and communication
setting.
Review the setting of the
switch and address.
Check that there is no broken
communication line or loosened connector.
Review the connection
condition of the
communication line. (If the
cable is broken, replace it
with a new one.)
The green SI
unit NS_LED
flashes.
Waiting for
connection to be
established.
Check if the PLC is operating normally.
Review the setting of PLC.