MC_TouchProbe_PTO: Activate a Trigger Event

Function Block Description

This function block is used to activate a trigger event on the probe input. This trigger event allows to record the axis position, and/or to start a buffered move.

Graphical Representation

IL and ST Representation

To see the general representation in IL or ST language, refer to the chapter Function and Function Block Representation.

Input Variables

This table describes the input variables:

Input	Type	Initial Value	Description
Axis	AXIS_REF_PTO	-	Name of the axis (instance) for which the function block is to be executed. In the devices tree, the name is declared in the controller configuration.
Execute	BOOL	FALSE	On rising edge, starts the function block execution. On falling edge, resets the outputs of the function block when its execution terminates.
WindowOnly	BOOL	FALSE	If TRUE, only use the window defined by FirstPosition and LastPosition to accept trigger events.
FirstPosition	DINT	0	Start absolute position from where (positive direction) trigger events are accepted (value included in window).
LastPosition	DINT	0	Stop absolute position until where (positive direction) trigger events are accepted (value included in window).
TriggerLevel	BOOL	FALSE	If FALSE, position capture at falling edge. If TRUE, position capture at rising edge.

Output Variables

This table describes the output variables:

Output	Type	Initial Value	Description
Done	BOOL	FALSE	If TRUE, indicates that the function block execution is finished with no error detected.
Busy	BOOL	FALSE	If TRUE, indicates that the function block execution is in progress.
CommandAborted	BOOL	FALSE	Function block execution is finished, by aborting due to another move command or a error detected.
Error	BOOL	FALSE	If TRUE, indicates that an error was detected. Function block execution is finished.
ErrorId	PTO_ERROR	PTO_ERROR.NoError	When Error is TRUE: code of the error detected.
RecordedPosition	DINT	0	Position where trigger event was detected.

NOTE: Only the first event after the rising edge at the MC_TouchProbe_PTO function block Busy pin is valid. Once the Done output pin is set, subsequent events are ignored. The function block needs to be reactivated to respond to other events.