Is it possible to not have a false return, or have a in an Ignition expression if statement?

Ignition
1

I have a Multistate Button that I would like to have locked to a certain control value when a client tag reads as a certain value. I thought I'd accomplish this by binding the control value to an expression that says if the tag is equal to the value I'm looking for, the control value will be 2 (what I want to lock it down to), but I'm not sure what to put for the falseReturn value to tell it to just leave the value as it is.

2

You cannot.

Instead, consider disabling the control component under that condition. Perhaps use a property change event script on that to write the locked value when the component is disabled.

2 Likes
3

This is a great workaround, thank you!