[SM-P00081-A]
−24−
5
MAINTENANCE
5.3 Troubleshooting
Troubleshooting for this slave unit must be performed not only for the single unit but for the entire
system.
The system may start operating suddenly depending on the communication state. Use extreme care
and ensure safety during maintenance.
[Fault 1] PW, PW(V) does not light up.
● Check that the power cable is properly connected and in good condition.
● Check that the supplied powervoltage is used within the specified range.
[Fault 2] ERR LED is blinking.
● Check that the power to PLC is turned on.
● Check that there are no problems (such as damage or disconnection) with the network cable or
connector connection.
● Check that the network cable is compatible with EtherCAT.
● Check that transmission distance is compatible with EtherCAT.
● Check that there are no noise-generating devices or high-voltage lines near the communication
line.
● Please confirm whether the SII data written in this product (ESI file) is right using TwinCAT.
[Fault 3] INFO LED is blinking.
● Please confirm whether the SII data written in this product (ESI file) is right using TwinCAT.
[Fault 4] RUN LED does not light up.
● Check that the product name in the configuration matches the product's name (polarity).
● Check that the IN and OUT cable connections are correct. Do not connect between INs or
OUTs.
● Check the node address setting state (incorrect or duplicate). If the setting has been changed,
turn off the power and turn on again.
[Fault 5] The slave unit does not perform according to the specified output mode setting when a
communication error occurs.
● Set the switch and turn off the power and turn on again.
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