Siemens SINUMERIK 840D sl Programming Manual page 311

Measuring variant
Example:
Axial position,
R ≠ 0,
measuring with
reversal,
calculate radius only
_MVAR=1101
_MA=2
L1 must be known
Example:
Radial position,
R ≠ 0,
measuring with
reversal,
calculate length only
_MVAR=10101
_MA=1
R must be known
Example:
Radial position,
R ≠ 0,
Measuring without
reversal,
calculate length and
radius,
2 measuring points
necessary
_MVAR=12001
_MA=1
Notes:
On starting, the measuring point must be outside the measurement cube coordinates in both
coordinates.
On the opposite side of the measuring cube (P2) measurement is performed with a rotated spindle
(by 180 degrees). The same cutting edge is then measured. This only happens if the spindle is
stationary and without reversal.
In this example, L1 refers to the upper cutting edge. If L1 is to be calculated in another measurement,
the starting position must be below the measuring cube.
Measuring cycles
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
6.3 CYCLE982 tool: Measure turning and milling tools
Specified Offset applied in
geometry
L1=... R
L2=... R=ABS(P – L1)
R=...
L1=... L2
L2=... L2=(P - R)
R=... Or other
measuring
direction:
L2=(P + R)
L1=... L2
L2=... R
R=... L2=(P1 + P2)/2
R=
ABS(P1-P2)/2
Measuring Cycles for Turning Machines
Milling tool, drills
6-35