Acyclic data

The ADS blocks are used to send acyclic data. These then access the PROFINET record data. So that acyclic data can be read or written, the PROFINET device must be in data exchange mode.

An ADSReadWrite is set.

ADS settings

AMSNetID: The AMSNetID of the Profinet controller

PORT: Port number of the device (take this from the system manager)

Index GROUP: 0x0000_F823

Index OFFSET: 0x0000_0000

DATA

typedef struct {
  WORD           RW;
    #define      PN_READ         0
    #define      PN_WRITE        1
  WORD           NrOfAR;
  DWORD          API;
  WORD           Slot;
  WORD           SubSlot;
  PNIO_RECORD    RecordData;
} PNIO_CONFIGRECORD

nRW	nNr	nAPI	InSlot	SubSlot	nIndex	nLen	nTrans	nLenA
2 bytes	2 bytes	4 bytes	2 bytes	2 bytes	2 bytes	2 bytes	2 bytes	2 bytes

Example:

Send a read request for I&M function 0

nRW	nNr	nAPI	InSlot	SubSlot	nIndex	nLen	nTrans	nLenA
00 00	00 00	00 00 00 00	00 00	01 00	F0 AF	00 00	01 00	00 00

Notice

Note memory size

Make sure that the receive data memory is large enough.