The function fills the memory area defined by the parameter Buf with the data defined in the parameter Ch. The parameter Size defines the size of the area to be filled. The function returns the address of the memory area to be filled.
Function
CODESYS: eCDSXUnified12Lib
LogicLab: eLLabXUnified12Lib
Description
Buf (@BYTE) Address of the memory area in which to transfer the data.
Ch (INT) Data to be transferred.
Size (UDINT) Size of the memory area to be occupied
The function returns a variable (@BYTE) with the address of the memory area where it transferred the data. In case of error it is returned eNULL.
Examples
How to use the examples.
By activating the variable from debuf CSet the function Sysmemset reset the buffer Message, when the execution is finished Result it will be set with the buffer address.
LogicLab (Ptp116)
PROGRAM ST_Sysmemset
VAR
CSet : BOOL; (* Set command *)
Result : UDINT; (* Function result *)
Message: STRING[ 32 ]; (* Memory buffer *)
END_VAR
// *****************************************************************************
// PROGRAM "ST_Sysmemset"
// *****************************************************************************
// By setting the "Set" command the memory zeroed.
// -----------------------------------------------------------------------------
IF (CSet) THEN
CSet:=FALSE; //Set command
Result:=Sysmemset(ADR(Message), 0, SIZEOF(Message));
END_IF;
// [End of file]CODESYS (Ptp161)
PROGRAM ST_Sysmemset
VAR
CSet : BOOL; //Set command
Result : UDINT; //Function result
Message: STRING[ 32 ]; //Memory buffer
END_VAR
// *****************************************************************************
// PROGRAM "ST_Sysmemset"
// *****************************************************************************
// By setting the "Set" command the memory zeroed.
// -----------------------------------------------------------------------------
IF (CSet) THEN
CSet:=FALSE; //Set command
Result:=Sysmemset(ADR(Message), 0, SIZEOF(Message));
END_IF;
// [End of file]