Concurrent Positioning Axis - Siemens SINUMERIK 840D sl Function Manual

● The last block with a programmed end-of-motion criterion that was processed in the
● Group 1 (modal movement commands) of the G functions G0, G1, G2, ...) does not apply
References:
Programming Manual Fundamentals
Applications
The following are typical applications for positioning axes:
● Single-axis loaders
● Multi-axis loaders without interpolation (PTP → point-to-point traversing)
● Workpiece feed and transport
Other applications are also possible:
● With G0 workpiece delivery and workpiece transport can travel to their end points
● On machines with several machining processes in sequence: significant reduction in
11.2.3

Concurrent positioning axis

Concurrent positioning axes are positioning axes with the following properties:
● Activation from the PLC need not take place at block limits, but can be implemented at
● Program command WAITP is required to move a concurrent positioning axis from the part
● The part program continues to run uninhibited, even if the concurrent positioning axis has
● An automatic axis change is possible, depending on the setting in the machine data
● With programming commands:
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
search run serves as a container for setting all axes.
to positioning axes.
independently of one another.
individual machining steps due to block change in the braking ramp of the single-axis
interpolation.
Note
Positioning axes are not suitable for multi-axis loaders that require interpolation between
the axes (path interpolator).
any time in any operating mode (even when a part program is already being processed in
the channel).
program immediately after power ON.
not reached the position defined by the PLC.
MD30552 $MA_AUTO_GET_TYPE.
– GET(<axis>) or WAITP(<axis>) becomes a concurrent positioning axis of the
channel axis again.
– "RELEASE (axis)" or WAITP(<axis>) is a channel axis that becomes a
concurrent axis under PLC control.
11.2 Own channel, positioning axis or concurrent positioning axis
P2: Positioning axes
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