TcpConnection.Send (METH)

METHOD Send : ERROR_ID

Method to send data of an established TCP connection

VAR
    fbTcpConnection     : TcpConnection;        (* Instance of function block - can be either TcpConnection or TcpClient. Anyhow a communication must be established before using the Receive method() *)

    eErrorId            : AC500_Tcp.ERROR_ID;           (* Error Id of the Connect method *)
    dwAddErrNo          : AC500_Tcp.RTS_IEC_RESULT;     (* Additional error number - list available in GVL of CmpErrors.Erros library *)
    sDataSend           : STRING(1000);                 (* Data buffer of the string that shall be send *)
END_VAR

------------
// Cyclic call of Send()
eErrorId := fbTcpConnection.Send(   Data        := ADR(sDataSend),
                                    Size        := TO_UDINT(StrLenA(ADR(sDataSend))),
                                    AddErrNo    => dwAddErrNo);

// As long as ERROR_ID = BUSY, the TcpConnection is waiting for incoming messages
IF eErrorId = AC500_Tcp.ERROR_ID.NO_ERROR OR eErrorId = AC500_Tcp.ERROR_ID.NO_ERROR_BUSY THEN

    ;   // Telegram has been send successfully

ELSIF eErrorId <> AC500_Tcp.ERROR_ID.BUSY THEN

    ;   // For ERR_INTERNAL, please check AddErrNo - AC500_Tcp.RTS_IEC_RESULT - the error codes are listed in the GVL of CmpErros.Errors

END_IF

InOut:

Scope	Name	Type	Comment
Return	Send	ERROR_ID
Input	Data	POINTER TO BYTE	Pointer to the data to be send
	Size	UDINT	Size or Length of the data
Output	AddErrNo	RTS_IEC_RESULT	Additional error number gives information about error from SysSock2Close –> please see CmpErrors.Errors