ReceiveWatchdog (FB)¶

FUNCTION_BLOCK ReceiveWatchdog EXTENDS CBM.LTrig

This function block monitors the reception of a specific parameter group (itfParameterGroup). xError becomes TRUE if there is no reception after tTimeout else function block stays in busy state.

InOut:

Scope	Name	Type	Comment	Inherited from
Input	`xEnable`	`BOOL`	`TRUE`: Action starts `FALSE`: Action stops, outputs `xDone`, `xBusy`, `xError` are resetted	LTrig
Output	`xDone`	`BOOL`	`TRUE`: Action successfully completed	LTrig
	`xBusy`	`BOOL`	`TRUE`: Function block active	LTrig
	`xError`	`BOOL`	`TRUE`: Error occurred, function block aborts action `FALSE`: No error	LTrig
Input	`itfParameterGroup`	`IReceiveParameterGroup`	parameter group to be monitored
Input	`tTimeout`	`TIME`	monitoring time: t#0ms = infinite timeout (no timeout monitoring)
Output	`eError`	ERROR	detailed error information if `xError` is `TRUE`.
Output	`xReceived`	`BOOL`	`TRUE`: parameter group was received in previous cycle.