MC_ReadParam

 Function Block A function block groups an algorithm and a set of private data. It has inputs and outputs. - Returns the value of the specified axis parameter.

Inputs

Input	Data Type	Range	Unit	Default	Description
Enable	BOOL	0, 1	N/A	No default	Request to read the axis parameter.
Axis	AXIS_REF	1, 256	N/A	No default	Name of a declared instance of the AXIS_REF library function. See Axis Name and Number for more information. See AXIS_REF Structure for more information.
ParameterNumber	INT	No range	N/A	No default	Parameter number. See Axis Parameters for more information.

Outputs

Output	Data Type	Range	Unit	Description
Valid	BOOL			Indicates the Value output is valid.
Busy	BOOL			Indicates this function block is executing.
Error	BOOL			Indicates an invalid input was specified.
ErrorID	INT			Indicates the error if Error output is TRUE. See PLCopen Function Block ErrorIDs for more information.
Value	LREAL			Value of the parameter.

Remarks

• 
  

• This function or function block returns cached data.
  See Program a Multi-Core Controller for more information.

See Function Blocks - General Rules for more information about how inputs and outputs work.

Figure 6-218: MC_ReadParam

FBD Language Example

Not available.

FFLD Language Example

IL Language Example

Not available.

ST Language Example

            (* MC_ReadParam ST example *)
Inst_MC_ReadParam( EnableRead, Axis1, MC_AXIS_PARAM_CMD_VEL );
Axis1_CmdVel := Inst_MC_ReadParam.Value;