Siemens SINUMERIK 840D sl Programming Manual page 918

Glossary
Block search
For debugging purposes or following a program abort, the "Block search" function can be
used to select any location in the part program at which the program is to be started or
resumed.
Booting
Loading the system program after power ON.
C axis
Axis around which the tool spindle describes a controlled rotational and positioning
movement.
Channel
A channel is characterized by the fact that it can process a → part program independently of
other channels. A channel exclusively controls the axes and spindles assigned to it. Part
program runs of different channels can be coordinated through → synchronization.
Circular interpolation
The → tool moves on a circle between specified points on the contour at a given feed rate,
and the workpiece is thereby machined.
CNC
See → NC
COM
Component of the NC for the implementation and coordination of communication.
Compensation axis
Axis with a setpoint or actual value modified by the compensation value
918
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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