The quick guide refers to it briefly. The function simply cycles the outputs by turning them on then off sequentially for 1 second each. If you have the relay module you can actually hear the relays as they sequence. In the IO8T you’ll have to have loads connected (lights or LEDs or valves) to actually notice it. In doing this, the communication for the PLC to the module is checked.
Reply To: Diagnostic Mode in EZIOxx Utility?2017-12-21T10:22:17-08:00