Input Dark Test Error

What does 1401H mean?

During an input dark test, the module failed to detect the expected test pulses. This indicates a problem with the input dark test setup, the input wiring, the connected devices, or an unused input terminal that has not been correctly configured to be 'Not used'.

• Expected test pulses were not detected during an input dark test, possibly due to wiring or device issues.
• An unused input terminal is not correctly set to 'Not used' for 'Wiring input selection', interfering with the dark test.

Click steps to track your progress.

1. 1

   For any unused input terminals, set 'Wiring input selection' to 'Not used'.

2. 2

   Check for the specific input terminal with the error using Input dark test error detection state (Un\G1040).

3. 3

   Review and adjust the connected devices and wiring for the identified problematic input terminal.