Scripting a button press to turn on a PLC tag

[jhansen]

This forum post gives a good solution;

Perspective: Scripting a Momentary Button

Hey folks, Ignition 8.0.7 I’m trying to implement a momentary button in Perspective, but the feature doesn’t appear to be available. The One-Shot Button documentation states, “If your PLC expects the HMI to reset the bit, use the Momentary Button.” Since it seems as though the feature is not yet supported, does anyone have an example script for the button component that can reliably perform the Momentary function? I’m having a hard time replicating the function of the momentary button from Vi…

It's best to have a button set the value to 1 using a script. (Right click the button -> Configure Events, then use the system.tag.writeBlocking() function to write to the tag). Then program the PLC to reset the value back to 0 after a given time.

If you want to do this only from ignition, refer to the forum post and use some form of sleep() or threading.Timer to write a 0 back to the tag after a specified time.