Cycle994 Workpiece: 2-Point Measurement; Function Overview; General Information - Siemens SINUMERIK 840D sl Programming Manual

Measuring Cycles for Turning Machines

6.6 CYCLE994 workpiece: 2-point measurement

6.6 CYCLE994 workpiece: 2-point measurement
6.6.1

Function overview

6.6.1.1

General information

Function
This measuring cycle can be used to determine workpiece dimensions in 2-point
measurements with various measuring variants.
Automatic tool offsetis also possible.
The measuring cycle determines the actual value of the workpiece with respect to the
workpiece zero in the selected measuring axis _MA and calculates the difference from a
defined setpoint (setpoint-actual value). An empirical value stored in data block GUD5 can
be included. It is also possible to calculate a mean value over several parts.
The cycle checks that a set tolerance range for the measured deviation is not violated and
automatically corrects the tool offset memory selected in _KNUM. If KNUM=0, there is no
offset.
Two opposite measuring points in measuring axis _MA are approached symmetrically to the
workpiece zero at the distance of the setpoint _SETVAL.
Order: 1. measuring point positive, 2nd measuring point negative.
A safety zone is programmed in parameters _SZA and _SZO. This is considered in traversal
with the measuring variant. The probe ball radius must also be considered by the user.
346
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles