Siemens SINUMERIK 840D sl Function Manual page 792

Positioning Axes (P2)
Own channel, positioning axis or concurrent positioning axis
Activation from PLC
The concurrent positioning axis is activated via FC 18 from the PLC.
● Feed
● Absolute dimensions (G90), incremental dimensions (G91)
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
792
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 along shortest path for rotary axes (<rotary axis
name>=DC(<value>))
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions