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

P2: Positioning axes

11.2 Own channel, positioning axis or concurrent positioning axis

11.2 Own channel, positioning axis or concurrent positioning axis
11.2
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 - only 840D sl
● 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 - only 840D sl

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:
References
For more information on the channel functionality, please refer to:
Function Manual, Basic Functions; BAG, Channel, Program Operation, Reset Response (K1)
766
(Page 766) ").
"Positioning axis (posAxis) (Page 767) ").
(Page 769) ").
– 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
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions