MC_GearOut

The MC_GearOut FB releases coupling of the slave axis to the master axis that has been specified via a gear ratio. The current speed of the slave is retained (endless motion).

Block diagram

Parameters of the FB

VAR_IN_OUT
	Slave	AXIS_REF	Axis reference to the slave axis.
VAR_INPUT
	Execute	BOOL	Start disengaging process at the rising edge.
VAR_OUTPUT
	Done	BOOL	Disengaging completed.
	Error	BOOL	Indicates if an error has occurred.
	ErrorID	WORD	Error identification.

Behavior of the FB

Cancellation of gear coupling is commanded only when the axis is in the Synchronized Motion state. If this is not the case, the "Error output is set to FALSE and ErrorID indicates an error value that designates the state the axis is currently in.
Mention is made here once again of the (idiosyncratic) definition of the PLCopen standard to the effect that the commanded slave axis remains at its momentary speed after cancellation of coupling. Therefore, it does not necessarily stop.
The function block is retriggerable, i.e. it can send a command when it is in the active state.