P2: Positioning axes
10.2 Own channel, positioning axis or concurrent positioning axis
Extended Functions
602 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
10.2.1 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
● Channelspecific 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
● Channelspecific evaluation and display of alarms
● Channelspecific display, e.g. for
– Actual axis positions
– Active G functions
– 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
References
For more information on the channel functionality, please refer to:
function manual, Basic Functions; BAG, Channel, Program Operation, Reset Response (K1)
10.2.2 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 together and do not reach their end point simultaneously (no direct time
relationship, see also Section "Motion behavior and interpolation functions (Page 606)").
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