Problem with Serial communication

Codesys V2.3 🇬🇧
Faucheuse
2009-03-09
2009-03-10

  • Faucheuse - 2009-03-09

    Hello,

    I tried recently to use the SysLibCom library in CoDeSys with that program :

    IF(result=0)

    THEN

    PortTest:=SysComOpen(2);



ParamCom.byParity:=0;

ParamCom.byStopBits:=1;

ParamCom.dwBaudRate:=9600;

ParamCom.dwScan:=0 ;

ParamCom.dwTimeout:=0;

ParamCom.Port:=2;

ParamCom.dwBufferSize:=0;





result:=SysComSetSettings(PortTest,ADR(ParamCom)) ;

    END_IF

    b:='BONJOUR';

    c:=SysComWrite(PortTest,ADR(b),LEN(b), 100) ;

    resultClose:=SysComClose(PortTest);

    But it doesn't work : when I try to access the system, it's write "ParamCom.Port:= ***INVALID : 0", but I can run the program normally.

    What's the matter here ?

    Thanks for your help.

    EDIT : I saw that the matter is the handle returns by the SysComOpen functiun.

     

  • hcchin - 2009-03-10

    May i know what hardware are you using for this SysLibCom library ?

     

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