GETIO_PART (FB)

FUNCTION_BLOCK GETIO_PART

The GETIO_PART function block gets a subset of the input data associated to a slot or subslot of a Field Device. The input data are addressed within the slot or subslot through OFFSET and LEN parameters. The GETIO_PART function block gets the input data from the Host Controller interface out of the cyclically read input data of the Field Device. The function block is invoked by a 1 of the EN input.

If the input data are valid, the ENO output is set to 1, the ERROR output is set to 0, and the input data are stored in the variable given at the INPUTS parameter. The variable passed to the INPUTS parameter shall be of appropriate size to receive the input data.

Never use GETIO-/SETIO_PART FBs concurrently with %I/%Q-Input/Output-Mapping for the same slot/subslot !

InOut:

Scope	Name	Type	Comment
Input	EN	BOOL	Enable
	ID	DWORD	Identifier of a slot or subslot of a Field Device
	OFFSET	INT	Count of the first byte within the IO data object
	LEN	INT	Length of the data to read
	INPUTS	POINTER TO BYTE	Requested subset of the input data
Output	ENO	BOOL	Flag indication received data OK
	STATUS	DWORD	Last detected status
	ERROR	BOOL	Flag indication an error