MC_ReadParameter
The
MC_ReadParameter
function block returns the value of an axis-specific controller side parameter. For drive side parameters, refer to
Y_ReadDriveParameter.
Parameters
| * | Parameter | Data Type | Description | Default |
|---|---|---|---|---|
| VAR_IN_OUT | ||||
| B | Axis | AXIS_REF | Logical axis reference. | |
| VAR_INPUT | ||||
| B | Enable | BOOL | The function block will continue to execute every scan while Enable is TRUE and there are no errors. | FALSE |
| B | ParameterNumber | UINT | Controller parameter number. Refer to parameters with LREAL Data Type in the Axis Parameter List. | UINT#0 |
| VAR_OUTPUT | ||||
| B | Valid | BOOL | The Valid output indicates that the function block is operating normally and the outputs of the function block are valid. | |
| B | Busy | BOOL | For function blocks with Execute input, the Busy output is set to TRUE upon the rising edge of the Execute, and set to FALSE when Done, CommandAborted or Error outputs becomes TRUE. In the case of a function block with an Enable input, Busy indicates that the function block is operating, but may not be ready to provide valid outputs. | |
| B | Error | BOOL | The Error output is set to TRUE if an error has occurred during the operation of the function block. The output is cleared when the Execute or Enable input becomes FALSE. | |
| E | ErrorID | UINT | The ErrorID output provides the identifier of the error when there is an active error in the function block execution. The output is cleared when the Execute or Enable input becomes FALSE. | |
| B | Value | LREAL | Value of the parameter. | |
Notes
Refer to non boolean parameters in the Axis Parameter List.
Error Description
See the
Function Block ErrorID List
Example
Instance of
MC_ReadParameter
reading the non cyclic actual position of an axis.
