Own Channel, Positioning Axis Or Concurrent Positioning Axis; Own Channel - Siemens SINUMERIK 840D sl Function Manual

11.2

Own channel, positioning axis or concurrent positioning axis

When axes are provided for auxiliary movements on a machine tool, the required properties
will decide whether the axis is to be:
● is programmed in an internal part program (→ refer to "Own channel (Page 755)").
● programmed in the same part program as the machining operation (→ refer to
● started exclusively by the PLC during machining (→ refer to "Concurrent positioning axis
11.2.1

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
● One feedrate override per channel
● One rapid traverse override per channel
● Channel-specific evaluation and display of alarms
● Channel-specific display, e.g. for
● Channel-specific testing and channel-specific control of programs:
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
"Positioning axis (posAxis) (Page 756)").
(Page 758)").
– DB21, ... DBX7.1 (NC start)
– DB21, ... DBX7.3 (NC stop)
– DB21, ... DBX7.7 (reset)
– Actual axis positions
– Active G functions
– Active auxiliary functions
– Current program block
– Single block
– Dry run (DRY RUN)
– Block search
– Program test
11.2 Own channel, positioning axis or concurrent positioning axis
Positioning Axes (P2)
755