2-Angle Measurement; General Information - Siemens SINUMERIK 840D sl Programming Manual

Measuring Cycles for Milling and Machining Centers
5.7 CYCLE998 workpiece: Angle measurement and ZO determination
5.7.3

2-angle measurement

5.7.3.1

General information

Function
Using the measuring variants _MVAR=106 and _MVAR=100106
, it is possible to calculate and correct the angular position of a plane oblique in space on a
workpiece by measuring three points. The angles refer to rotation about the axes or the
active plane G17 to G19.
Otherwise, the same conditions apply as for simple angle measurement.
Additional data are required for the setpoint input of the 2nd angle. A ZO is implemented in
the rotary part of the set ZO memory (coordinate rotation)
Parameter for 2-angle measurement
Parameter Data type
_MVAR
_SETVAL
_STA1
_INCA
_MD
_ID
_SETV[0] REAL, >0
_KNUM
The following additional parameters are also valid:
_VMS, _CORA, _TSA, _FA, _PRNUM, _EVNUM and _NMSP
_CORA only relevant for monodirectional probe.
With _TSA, the difference of the angle is monitored and this value is additionally traversed to
_STA1 with intermediate positioning at an angle. _TSA has the dimension unit degrees in
this case!
202
Meaning
106 2-angle measurement and ZO determination,
intermediate positioning at an angle
1001106 2-angle measurement and ZO determination,
intermediate positioning paraxially
REAL, >0 Setpoint (axis position): Expected position on workpiece surface in
measuring point P1 in the applicate
(for _MVAR=106 only)
REAL Setpoint angle about 1st axis of the plane
REAL Setpoint angle about 2nd axis of the plane
0, 1 0: positive measuring direction
1: negative measuring direction
(for _MVAR=100106 only)
REAL, >0 Distance between measuring points P1 and P2 in the 1st axis of the
plane (abscissa)
Distance between measuring points P1 and P3 in the 2nd axis of
the plane (ordinate)
0, >0 0: without automatic ZO correction
>0: with automatic ZO correction
(Individual values: see Parameter description section "Description of
the most important defining parameters", Parameter _KNUM)
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles