Help fixing my Expression Tag

[JordanCClark]

You can't use an expression tag to write to itself (assuming I'm reading your post correctly).

There are various threads on here about totalizers. Perhaps start here:

Ignition totalizer for flow meter

Due to PLC insufficient memory, I will have to totalize the flows on Ignition. I found that I can use Hour Meter, but it’s insufficient for my purpose. Totalizing the flow starting on specific time of the day. Pause the totalizing if condition A is off, continue if condition A is On. Reset totalizer at specific time of the day, before resetting the totalizer, move the current totalizer value to previous totalizer value, meanwhile also add the current totalizer value to lifetime totalizer valu…