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
);

Parameters

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 status.