Writing value to tag from expression tag

[michael.black]

Ah, so the Ignition_Comms_Faulted_Tmr.DN bit to turn on the SCADA_COMMS_LOSS bit should be an XIO instead of an XIC:

In this case while you know you are seeing a change in value from the ignition side of the heartbeat the TOF timer won’t finish and gets cleared. If you don’t see a change in value from the ignition side for 15 seconds then you know that you aren’t connected and therefore can throw an error.

As I am sure you know I grab the snippet of code you had from a previous thread about creating a heartbeat between ignition and a plc.

[pturmel]

@michael.black

As I am sure you know I grab the snippet of code you had from a previous thread about creating a heartbeat between ignition and a plc.

Yes. I recognized it. If you look at my original, the timer name indicates the sense of the usage.