UInt64isZero

This function returns TRUE if value of the unsigned 64 bit integer variable is zero.

FUNCTION UInt64isZero: BOOL

VAR_INPUT
    ui64 : T_ULARGE_INTEGER;
END_VAR

Development environment	Target system type	PLC libraries to include
TwinCAT v2.9.0 Build > 1031 TwinCAT v2.10.0 Build > 1240	PC or CX (x86)	TcUtilities.Lib ( Standard.Lib; TcBase.Lib; TcSystem.Lib are included automatically )
TwinCAT v2.10.0 Build >= 1301	CX (ARM)

Development environment

Target system type

PLC libraries to include

TwinCAT v2.9.0 Build > 1031

TwinCAT v2.10.0 Build > 1240

PC or CX (x86)

TcUtilities.Lib

( Standard.Lib; TcBase.Lib; TcSystem.Lib are included automatically )

TwinCAT v2.10.0 Build >= 1301

CX (ARM)