AdsSyncReadWriteReqEx2

Writes data synchronously into an ADS server and receives data back from the ADS device. 

LONG AdsSyncReadWriteReqEx2(
  LONG      port,
  PAmsAddr  pAddr,
  ULONG     nIndexGroup,
  ULONG     nIndexOffset,
  ULONG     nReadLength,
  PVOID     pReadData,
  ULONG     nWriteLength,
  PVOID     pWriteData,
  ULONG*    pcbReturn
);

Parameter

port

[in] port number of an ADS port that had previously been opened with AdsPortOpenEx or AdsPortOpen.

    pAddr

    [in] Structure with NetId and port number of the ADS server.

    nIndexGroup

    [in] Index Group.

    nIndexOffset

    [in] Index Offset.

    nReadLength

    [in] Length of the data, in bytes, returned by the ADS device.

    pReadData

    [out] Buffer with data returned by the ADS device.

    nWriteLength

    [in] Length of the data, in bytes, written to the ADS device.

    pWriteData

    [out] Buffer with data written to the ADS device.
pcbReturn

[out] pointer to a variable. If successful, this variable will return the number of actually read data bytes.

Return value

Returns the function's error state.

See also