L978 1-Point Measurement - Siemens SINUMERIK 840 User Manual

5 Measuring Cycles for Milling Machines and Machining Centres 10.91
5.4.2 L987 1-point measurement
5.4.2

L978 1-point measurement

Function and application
The measuring cycle ascertains the actual value of the workpiece in the selected measuring
axis in relation to the zero point of the workpiece and the set/actual difference.
An empirical value stored in the SDC is subsequently allowed for with the correct sign.
In addition, averaging is performed over a number of parts and the tolerance bands are
checked (Section 1.7.1).
The probe faces the measuring surface at a distance of "a" on completion of measurement.
No automatic offset is carried out or alternatively length compensation or radius offset
(difference halved) is performed, depending on the definition of R10.
Precondition:
The probe must be positioned with tool offset and without G53 to face the surface to be
measured.
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SINUMERIK 840/850/880 (BN)