GET_RTC_DT

Read the real-time clock

GET_RTC_DT reads the PLC's real-time clock value for the clock/calendar function. If the PLC has no real-time clock or if the real-time clock is not functioning, the result is an invalid date and time value.

Parameters

Output

VAR_OUT (DATE_AND_TIME): date and time

Example

POU header

All input and output variables used for programming this function have been declared in the POU header. The same POU header is used for all programming languages.

	VAR
		bSetEdge: BOOL:=FALSE;
		DT_value: DT:=DT#2001-01-01-00:00:00;
	END_VAR

LD body

BODY
    WORKSPACE
        NETWORK_LIST_TYPE := NWTYPELD ;
        ACTIVE_NETWORK := 0 ;
    END_WORKSPACE
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 5 ;
        NETWORK_BODY
B(B_F,GET_RTC_DT!,Instance,19,2,27,4,,?C);
B(B_VAROUT,,DT_value,27,2,29,4,);
L(1,0,1,5);
        END_NETWORK_BODY
    END_NET_WORK
END_BODY

ST body

DT_value := GET_RTC_DT();