MC_Power (FB)¶

FUNCTION_BLOCK MC_Power

MC_Power is designed for controlling the power stage (“on” or “off”).

Note

The inputs are only processed if Enable is TRUE.
A call of MC_Power with bRegulatorOn = FALSE sets nAxisState of the referenced axis always into state power_off. (Except for encoder axes, which stay in standstill, see the note on

encoders further below.)
A call of MC_Power with bRegulatorOn = TRUE on a disabled axis sets its nAxisState to standstill if there is no error on the axis. If an error is detected, the state of the axis is set to errorstop.
If the inputs Enable, bRegulatorOn and bDriveStart are TRUE but the output Status remains FALSE for a long time, a possible reason is a hardware problem with the power stage of the drive.
If power fails (also during operation), nAxisState of the referenced axis is set to errorstop.
For encoder axes, such as FREE_ENCODER_REF or an encoder axis below a drive, calling MC_Power is not necessary. If called on an encoder axis, MC_Power has no effect on the axis and the output Status remains FALSE.

InOut:

Scope	Name	Type	Comment
Inout	`Axis`	AXIS_REF_SM3	Reference to the axis
Input	`Enable`	`BOOL`	`TRUE`: Enables the execution of the function block.
	`bRegulatorOn`	`BOOL`	`TRUE`: Enables the power stage.
	`bDriveStart`	`BOOL`	`TRUE`: Disables the quickstop mechanism.
Output	`Status`	`BOOL`	`TRUE`: Axis is ready to move.
	`bRegulatorRealState`	`BOOL`	`TRUE`: The power stage has been switched on.
	`bDriveStartRealState`	`BOOL`	`TRUE`: Drive is not blocked by the quickstop mechanism.
	`Busy`	`BOOL`	`TRUE`: Execution of the function block has not been finished yet.
	`Error`	`BOOL`	`TRUE`: Error has occurred within the function block during execution.
	`ErrorID`	`SMC_ERROR`	Error identification