Siemens SINUMERIK 840D sl Function Manual page 694

K2: Axis Types, Coordinate Systems, Frames
10.4 Coordinate systems
Geometry axes
● PRESETONS can be used on a stationary geometry axis when a further geometry axis is
not being traversed in the channel at the same time.
● PRESETONS can be used on a stationary geometry axis even when a further geometry axis
is being traversed in the channel at the same time, but this axis is in the "neutral axis" state
or traversing as a command axis.
Example: A further geometry (X) is traversing at the same time in the "neutral axis" state
Example: A further geometry (X) is traversing at the same time as command axis
PLC-controlled axes
● PRESETONS can be used on PLC-controlled axes according to their current type.
Spindle states
The following table shows the reactions that occur when PRESETONS is used on a spindle in
a synchronized action:
PRESETONS in the NC program
Spindle mode
Speed control mode
Positioning mode SPOS
Positioning across block bounda‐
ries SPOSA
694
Program code
N10 G0 X0 Y0
1)
N15 RELEASE(Y)
N20 PRESETONS(Y,20)
N30 G0 X40
N40 M30
1) Note
The release of an axis in the action part of a synchronized action does not ensure that the release
is on time.
N20 ID=1 WHEN 20.0 < $AA_IM[X] DO RELEASE(Y) PRESETONS(Y,20) ; NOT
recommended!
Program code
N10 G0 X0 Y0
N20 POS[X]=40 FA[X]=1000
N30 PRESETONS(Y,20)
N40 M30
Comment
; X, Y: Geometry axes
; Neutral axis
; Actual position Y in the MCS
= 20
; Geometry axis X traverses
Comment
; X, Y: Geometry axes
; X command axis
; Actual position Y in the MCS
= 20
Traversing sta‐ Assigned to the NC
tus program
In motion Alarm 22324
Stationary
In motion
Stationary
In motion Alarm 10610
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Main axis
Alarm 22324
+ +
- +
+ +
-
Basic Functions