MS: Green LED is
flashing
(1)Configuration is not
correctly.
(2)The master is idle
state.
(1)Set the configuration properly. Refer to "Hardware
Configuration" (page 89) for details.
(2)Set the PLC to RUN status.
Diagnostic error is
detected.
Check the LED status and eliminate the error
by referring to countermeasure No.2 to 7.
Stop the operation and contact SMC.
IP address is not setting.
Set IP address. Refer to "IP address setting switch"
(page 20) for details.
NS: Green LED is flashing
EtherNet/IP
TM
communication is not
established.
Check the following and restart.
•Signal line is connected from PLC.
•The communication speed of PLC and SI unit is
appropriate.
•Wire the communication line away from the noise
source.
EtherNet/IP
TM
communication is
time-out.
Check the following, and restart.
•Signal line is connected from PLC.
•The communication speed of PLC and SI unit is
appropriate.
•Wire the communication line away from the noise
source.
IP address is duplicated.
Reset IP address which has not been used yet. Refer to
"IP address setting switch" (page 20) for details.
The valve dose not work
correctly.
Program etc. is defective.
Check if the ladder program of master, etc. is correct.
Power supply for output is
out of range.
Check if the green PWR(V) LED of the SI unit is ON. If
the LED is off, or the red LED is ON, supply 24 VDC
+10/-5% to the power supply for output.
Connection between SI
unit and manifold valve is
defective.
Check the connectors between the SI unit and manifold
valve are not damaged, such as bent pins, and connect
them correctly.
Polarity of output does not
match.
IF the polarity of the SI unit and the valve are different,
replace one of them to make the combination match.
•EX600-SEN3 (PNP output)
-common type valve
•EX600-SEN4 (NPN output)
+common type valve
Replace the SI unit with a normal one, and check the
operation.
Replace the valve with a normal one, and check the
operation. Or refer to the troubleshooting of the valve
used.