IsoExchangeBuffer

Description

Exchanges a given S7 PDU (protocol data unit) with the CPU.

Declaration

int IsoExchangeBuffer(uint16_t *Size);

Parameters

	Type	Dir.
Size	Pointer to unsigned 16 bit integer	In	Buffer size
		Out	Reply telegram size

Return value

· 0 : The function was accomplished with no errors.

· Other values : see the Errors Code List. 

Remarks

The S7 PDU must be present into PDU variable.

No check is performed.