Measurement Path: _Fa - Siemens SINUMERIK 840D sl Programming Manual

Measuring cycles
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Parameter description
2.3 Description of the most important defining parameters
2.3.12

Measurement path: _FA

Parameter
Measurement path _FA defines the distance between the starting position and the expected
switching position (setpoint) of the probe. _FA is data type REAL with values >0.
Values <0 can only be programmed in CYCLE971
Always specify _FA in mm.
The measuring cycles automatically generate a total measuring distance = 2 · _FA in mm.
The maximum measuring position is therefore _FA behind the set position.
Note
See also Chapter 1 "General section, measuring principle".
Example
The default setting is _FA=2.0.
In the measuring cycle, a total measuring distance of 4 mm is therefore generated, starting 2
mm in front of and 2 mm behind the defined set position.
_FA is also used as a distance for traveling around workpieces or tool probes.
2-16
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
Measuring cycles

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