MC_TouchProbe (FB)

FUNCTION_BLOCK MC_TouchProbe

This function block is designed for recording an axis position when a trigger event is raised.

Note

The function block is intended for single shot operation, that is, only the first event following on a rising edge of Execute is valid for recording. Further events will be ignored.

One function block instance should represent exactly one probing command.

Example

Timing and TouchProbe

Example

Defining a window, where trigger events are accepted (for modulo axes).

InOut:

Scope	Name	Type	Initial	Comment
Inout	Axis	AXIS_REF_SM3		Reference to axis, the position of which is to be recorded at a defined event at the trigger input.
Inout	TriggerInput	TRIGGER_REF		Reference to trigger signal source
Input	Execute	BOOL	FALSE	Rising edge: Starts the execution of the function block.
	WindowOnly	BOOL	FALSE	TRUE: Trigger events will be accepted only within the specified window (definition hereunder).
	FirstPosition	LREAL	0	Start position from whereon (in positive direction) trigger events will be accepted (in technical units [u]).
	LastPosition	LREAL	0	End position up to which trigger events will be accepted (in technical units [u]).
Output	Done	BOOL	FALSE	TRUE: Trigger event has been recorded.
	Busy	BOOL	FALSE	TRUE: Execution of function block has not been finished yet.
	Error	BOOL	FALSE	TRUE: Error occurred within the function block.
	ErrorID	SMC_ERROR	0	Error identification
	RecordedPosition	LREAL	0	Position, where trigger event has occurred (in technical units [u]).
	CommandAborted	BOOL		TRUE: Command has been aborted by another command.