Siemens SINUMERIK 828D

A2: Various NC/PLC interface signals and functions
1.3 Functions
Basic Functions
56 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
REFRESH suppression
MD10131 $MN_SUPPRESS_SCREEN_REFRESH (screen refresh in case of overload)
Default setting for screen-refresh strategy with high NC utilization:
• Value 0: Refresh of current values is suppressed in all channels.
• Value 1: Refresh of current values is suppressed in time-critical channels.
• Value 2: Refresh of current values is never suppressed.
1.3.2 Settings for involute interpolation - only 840D sl
Introduction
The involute of the circle is a curve traced out from the end point on a "piece of string" unwinding from the curve.
Involute interpolation allows trajectories along an involute.
Figure 1-6 Involute (unwound from base circle)
Programming
A general description of how to program involute interpolation can be found in:
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