PeriodicTimer (FB)¶

FUNCTION_BLOCK PeriodicTimer

“warp clock”-enabled periodic timer.

PeriodicTimer can be used to trigger functionality periodically, xOut is set to TRUE for one execution cycle at the end of each period.

“Warp clock”-enabled¶

Certain application domains base their functionality / algorithms on real world wall clock date/time. To develop such functionality it is helpful to have control over the application timeline to speedup testing or doesnt loose control on the timeline sitting on breakpoints. WarpClock and “warp clock”-enabled function blocks provides such a control if needed. For more details about “warp” time see WarpClock.

To use “warp” time connect an accordingly configured WarpClock to itfDateTimeProvider.

InOut:

Scope	Name	Type	Initial	Comment
Input	`xEnable`	`BOOL`	TRUE	Enable the timer
	`tPeriod`	`TIME`	TIME#1s0ms	Period time
	`xReset`	`BOOL`	FALSE	Reset the timer
	`itfDateTimeProvider`	`Util.IDateTimeProvider`	Globals.g_dtpDateTimeProvider	Source for the current date and time information in milliseconds since 1.1.1970 00:00:00.000
Output	`xOutput`	`BOOL`		Trigger
	`tRemaining`	`TIME`		Remaing time in period
	`xError`	`BOOL`		Error indication
	`eErrorID`	Error		Error ID