MC_ReadParameter

This function block corresponds to the function block described in PLCopen for reading parameters.

CAUTION
The current implementation only supports reading from the axis lists (achsmdsX.lis). Default lists (default_achs_mds.lis) are not supported.

	The parameter set 0 and the list type ‘ACHS_MDS’ are used by default.

Block diagram

MC_ReadParameter 2:

Parameters of the FB

VAR_IN_OUT
	Axis	AXIS_REF	Axis reference.
VAR_INPUT
	Enable	BOOL	Get the values of the parameters continuously while enabled.
	ParameterNumber	STRING	Number/Identification of the parameter to be read, e.g. ‘kenngr.swe_pos’.
	ParameterType	STRING	Kind of parameter to be read. Current: ACHS_MDS
VAR_OUTPUT
	Valid	BOOL	Parameter available.
	Busy	BOOL	The FB with the ‘Busy’ = TRUE has control on the axis
	Error	BOOL	Indicates if an error has occurred.
	ErrorID	WORD	Error identification.
	Value	STRING	Parameter value from the original list.
	InternalErrorID	UDINT	Internal error identification of the ISG-MCP.

Behavior of the FB

The behavior of this FB corresponds to that of the MCV_ReadParamValue function block.