SYSTEMTIME_TO_DT

SYSTEMTIME_TO_DT 1:

The "SYSTEMTIME_TO_DT" function allows the Windows system time structure to be converted to the DATE_AND_TIME format (DT) usual in a PLC. The system time has a resolution of 1ms, while the resolution of DATE_AND_TIME is 1s. The milliseconds from the system time are used in the course of the conversion to determine the direction of rounding for the returned DATE_AND_TIME value.

FUNCTION SYSTEMTIME_TO_DT : DT

VAR_INPUT
    TIMESTR         :TIMESTRUCT;
END_VAR

TIMESTR: structure with the Windows system time to be converted.

Sample of a call in FBD:

PROGRAM SystemTimeTest
VAR
    SystemTimeStruct  :TIMESTRUCT;
    DTFromSystemTime  :DT;
END_VAR

SYSTEMTIME_TO_DT 2:

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v2.7.0 and above	BCxxxx (165)	Standard.Lb6, PlcSystemBC.Lb6, TcPlcUtilitiesBC.Lb6