Operational Sequence - Siemens SINUMERIK 840D sl Programming Manual

Explanation of example
The measuring results of web width, web center in X, and associated differences are entered
in result array _OVR[ ]. If the difference in the position of the web center is >1.2 mm
(_TSA=1.2) an alarm is output. Only cancellation with NC RESET is then possible.
The setpoint of the web center is the position of the probe in the workpiece coordinate
system at the beginning of the cycle in the X axis.
5.4.2.3

Operational sequence

Specification of setpoints
● For diameter and/or with using _SETVAL
● For the lengths of the rectangle using _SETV[0], _SETV[1]
The position of the probe in the abscissa, ordinate at the beginning of a cycle is evaluated for
the setpoint of the center point of a hole, shaft, or rectangle, or for the center of a groove,
web.
This value is also entered in the following result array:
● _OVR[1], _OVR[2] (for hole, shaft, groove, web).
● _OVR[2], _OVR[3] (for rectangle).
Specification of measuring axis:
The measuring axis in _MA only has to be specified for web or groove:
● _MA=1: measurement in abscissa
● _MA=2: measurement in ordinate.
For the remaining contour elements, measurement is always performed in both axes of the
plane and in both directions.
Measuring cycles
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
5.4 CYCLE977 workpiece: Measure hole/shaft/groove/web/rectangle parallel to axes
Measuring Cycles for Milling and Machining Centers
147