Own Channel; Positioning Axis - Siemens SINUMERIK 840D Function Manual

P2: Positioning axes
6.2 Own channel, positioning axis or concurrent positioning axis
6.2.1

Own channel

A channel represents a self-contained NC which, with the aid of a part program, can be used
to control the movement of axes, spindles and machine functions independently of other
channels.
Non-dependence between channels
Independence between channels is assured by means of the following provisions:
● An active part program per channel
● Channel-specific interface signals such as
– DB21, ... DBX7.1 (NC start)
– DB21, ... DBX7.3 (NC stop)
– DB21, ... DBX7.7 (reset)
● one feedrate override per channel
● One rapid traverse override per channel
● Channel-specific evaluation and display of alarms
● Channel-specific display, e.g. for
– Actual axis positions
– Active G commands
– Active auxiliary functions
– Current program block
● Channel-specific testing and channel-specific control of programs:
– Single block
– Dry run (DRY RUN)
– Block search
– Program test
Further information
For more information on the channel functionality, please refer to:
Function Manual Basic Functions; Mode group, channel, program mode, reset response
6.2.2

Positioning axis

Positioning axes are programmed together with path axes, i.e. with the axes that are
responsible for workpiece machining.
Commands for positioning axes and path axes can be included in the same NC block. Although
they are programmed in the same NC block, the path and positioning axes are not interpolated
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Axes and spindles
Function Manual, 06/2019, A5E47437747B AA