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FUNCTION WriteFileString : RTS_IEC_RESULT VAR_INPUT szFilename : STRING(255); szValue : STRING(255); END_VAR VAR Result: RTS_IEC_RESULT; hFile: RTS_IEC_HANDLE; dwNrBytes: DWORD; ulSize: UINT; dwNrBytes := SysFile.SysFileWrite(hFile, ADR(szValue) , ulSize, ADR(Result)); SysFile.SysFileClose(hFile); END_IF WriteFileString := Result;