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3 API functions

12 

A configuration parameter of an I/O module is treated as an SDO in the IPC and is

transferred to the BPB controller via the FIFOs in the form of a structure, which

contains the data in a format suitable for DS 401. Access of the IPC to the BPB

controller is effected in 2 possible ways:

IPC BPB controller

Writing: Write request  Status message

Reading: Read request  Response

3.4.2 SDO functions

BpbReadSdo function

Parameter

[in] HANDLE hOpen Pointer to open context (handle) for identification

[out] PUCHAR pReadBuffer SDO memory area

[in] WORD usBufferSize Size of the memory area

[out] PWORD pusActualSdoSize Size of the memory area assigned

Return values

S_OK Successful

E_HANDLE Incorrect (handle is invalid)

E_MEMORY Incorrect (BPB message memory area overflown)

BpbWriteSdo function

Parameter

[in] HANDLE hOpen Pointer to open context (handle) for identification

[in] PUCHAR pWriteBuffer SDO memory area

[in] USHORT usBufferSize Size of the memory area

[in] USHORT usSdoCount Number of SDOs

[out] PUSHORT pusSdoWritten Number of SDOs written

Return values

S_OK Successful

E_HANDLE Incorrect (handle is invalid)

E_FIFO Incorrect (output buffer has overflown)

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Lenze 3241C Manual de usuario Pagina 14