MC_ReadAxisComponents

MC_ReadAxisComponents 1:

The function block MC_ReadAxisComponents is used to read information relating to the subelements encoder, drive and controller of an axis.

	In this case "axis" refers to the TwinCAT NC axis and not the drive.

Inputs


VAR_INPUT
    Execute  : BOOL;
END_VAR

Execute

The command is executed with the rising edge.

Outputs


VAR_OUTPUT
    Done    : BOOL;
    Busy    : BOOL;
    Error   : BOOL;
    ErrorID : UDINT;
END_VAR

Done	Becomes TRUE, if the parameters were read successfully.
Busy	The Busy output becomes TRUE when the command is started with Execute and remains TRUE as long as the command is processed. If Busy becomes FALSE again, the function block is ready for a new order. At the same time one of the outputs, Done or Error, is set.
Error	Becomes TRUE if an error occurs.
ErrorID	If the error output is set, this parameter supplies the error number

Inputs/outputs


VAR_IN_OUT
    Axis    : AXIS_REF;
END_VAR

Axis

Axis data structure

The axis data structure of type AXIS_REF addresses an axis unambiguously within the system. Among other parameters it contains the current axis status, including position, velocity or error state.