How can I determine why the “ERR” light is on?
If you are using an iR-ETN or iR-ETN40R, you can monitor the I/O modules using EasyRemote IO via the following method:

1. Open EasyRemote IO and select the “Scan” button:

2. Within the following popup, click “Scan”:

3. When the scan is finished click “Ok” to add this device to the “Project window”:

4. Click on the “Start Monitoring” button to view the current values

5. A detailed description of the the module error will be shown within the message dialog:

For all other couplers, please consult the corresponding user manual for assistance.