GetDateAndTime (FB)

FUNCTION_BLOCK GetDateAndTime

This function block reads the realtime clock. It returns the time of the local time zone (i.e. a possible switch to summer/standard time will be regarded). The current time zone switch can be defined by SetTimeZoneInformation. If a switch to summer/standard time has become necessary since the last polling of the time, this is done automatically. At the start of the module the outputs dtDateAndTime and eTimezone are reset. (DT#1970-01-01-00:00 and RTCLK_UNKNOWN). After successful operation they will contain the current local time.

InOut:

Scope	Name	Type	Comment
Input	xExecute	BOOL	Rising edge: Action start Falling edge: Resets outputs. If a falling edge occurs before the function block has completed its Action, the outputs operate in the usual manner and are only reset if either the action is completed or in the event of an error. In this case, the corresponding output values (xDone, xError, iError) are present at the outputs for exactly one cycle.
Output	xDone	BOOL	Action successfully completed
	xBusy	BOOL	Function block active
	xError	BOOL	TRUE: error occurred, function block aborts action FALSE: no error
	eError	ERROR	Error description for diagnosis
	dtDateAndTime	DT	Current local time
	eTimezone	PERIODE	Current time zone