VT10OnChTVar

V = Variables

T = Control functions

The VT10OnChTVar functiomn checks the value of a variable and set a flag if the value changes.
The flag is reset automatically after an adjustable time.

IMPLEMENTATION

VT10OnChVar (var01, changed)

Parameters:

IN/OUT	VARIABLE TYPE	EXAMPLE NAME	DIM
IN	SYSTEM / INPUT / OUTPUT	var01	F/L	Variable to check
OUT	GLOBAL	changed	F	Change flag execute
IN	SYSTEM	time01	L	Waiting time before reset flag to change value (msec)

Example

In the example, if the variable 'pippo' changes its value and is activated the 'ofUscita' output.

slTimeRes = 10
VT10OnChVar (pippo, changed, slTimeRes)**
IF changed
	SETOUT ofUscita
ENDIF

Note

To be effective, the function should be placed at a point of the application that runs on every round.
The flag that signals the change is reset automatically from the function once the set time has passed.