Siemens SINUMERIK Series Function Manual

P2: Positioning axes
10.2 Own channel, positioning axis or concurrent positioning axis
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
605
10.2.3 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
any time in any operating mode (even when a part program is already being processed in
the channel).
● Program command
WAITP is required to move a concurrent positioning axis from the part
program immediately after power ON.
● The part program continues to run uninhibited, even if the concurrent positioning axis has
not reached the position defined by the PLC.
● An automatic axis change is possible, depending on the setting in the machine data
MD30552 $MA_AUTO_GET_TYPE.
● With programming commands:
–
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.
Activation from PLC
For SINUMERIK 840D sl, the concurrent positioning axis is activated via FC 18 from the
PLC.
● Feedrate
For feedrate = 0, the feedrate is determined from the following machine data:
MD32060 $MA_POS_AX_VELO (initial setting for positioning axis velocity)
● Absolute dimensions (
G90), incremental dimensions (G91)
Absolute dimensions along shortest path for rotary axes (
<rotary axis
name>=DC(<value>)
)
The following functions are defined:
● Linear interpolation (
G1)
● Feedrate in mm/min or degrees/min (
G94)
● Exact stop (
G9)
● Settable zero offsets currently selected are valid
Applications
Typical applications for concurrent positioning axes include:
● Tool magazines with manual loading and unloading during machining
● Tool magazines with tool preparation during machining

Siemens SINUMERIK Series Specifications

General

Axes Control	Up to 31 axes
Category	Control Unit
Manufacturer	Siemens
Series	SINUMERIK
Control Type	CNC
Communication Interfaces	Ethernet, USB
Operating Temperature	0°C to 45°C
Protection Class	IP20
Power Supply	24V DC
Display	Color TFT LCD