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13 Troubleshooting
NX-series EtherCAT Coupler Unit User’s Manual (W519)
13-2 Checking for Errors and Troubleshooting with the Indicators
13
13-2-1 Checking for Errors and Troubleshooting with the Indicators on the EtherCAT Coupler Unit
13-2 Checking for Errors and Trouble-
shooting with the Indicators
You can check for errors in the EtherCAT Slave Terminal with the indicators on the EtherCAT Coupler
Unit and the NX Units. This section tells you about the errors that the indicators show and the trouble-
shooting procedures for them.
Here, the following abbreviations are used to describe the status of the indicators.
13-2-1 Checking for Errors and Troubleshooting with the Indicators on
the EtherCAT Coupler Unit
Indicators
Name Function
L/A IN The L/A IN indicator shows the status of the inputs in EtherCAT communications.
L/A OUT The L/A OUT indicator shows the status of the outputs in EtherCAT communications.
RUN The RUN indicator shows the operating status of EtherCAT communications for the EtherCAT
Coupler Unit.
ERR The ERR indicator provides information on errors in the EtherCAT Coupler Unit.
TS The TS indicator gives the status of the EtherCAT Coupler Unit and the communications status
between the EtherCAT Coupler Unit and the NX Units.
UNIT PWR The UNIT PWR indicator shows the status of the Unit power supply.
IO PWR The IO PWR indicator shows the status of the I/O power supply.
Primary Errors That the Indicators Show and Troubleshooting Pro-
cedures
Abbreviation Indicator status
Lit Lit.
Not Lit Not lit.
FS () A flashing pattern other than flickering, blinking, single flash, and double flash. The
numeric value in parenthesis is the interval.
FK Flickering
B Blinking
SF Single flash
DF Double flash
--- Undefined.
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