Siemens SINUMERIK 840D sl Commissioning Manual page 202

Optimize the drive.
11.3 Circularity test measurement
Display mode
The following parameter assignments for programming the mode of representation of
measurement results can also be made:
● Display based on mean radius
● Display based on programmed radius
● Scaling of the diagram axes
If the measuring time calculated exceeds the time range that can be displayed from the trace
buffers (maximum measuring time = position controller cycle frequency * 2048), a coarser
sampling rate is used for recording (n * position controller cycle frequency), so that a
complete circle can be displayed.
Figure 11-8
The two drives selected for measurement must describe a circular interpolation (G2/G3) with
the parameters shown in the example via a part program:
Radius=100 mm, F=10000 mm/min
202
Circularity test measurement parameters
Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
IBN CNC: NCK, PLC, drive