Siemens SINUMERIK 840D sl Function Manual page 102

Detailed description
3.7 Actions in synchronized actions
● Traversing path axes
● Reciprocating axes
● Axes on which one or more of the following safety functions (Safety Integrated) are active
– Enable safe limit switch
– Enable safe cam, pair 1 ... 4, cam +/-
●
● Synchronized axes of a gantry grouping
● Axes for which the reference point approach from the part program (G74) is active
● Slave axis of a speed/torque coupling (master-slave)
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.
102
MD36901 $MA_SAFE_FUNCTION_ENABLE[<safe axis>], bit 1 = 1
MD36901 $MA_SAFE_FUNCTION_ENABLE[<safe axis>], bits 8 ... 15 = 1
Hirth axes
Program code
N10 G0 X0 Y0
1)
N15 RELEASE(Y)
N20 ID=1 WHEN 20.0 < $AA_IM[X] DO
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 ID=1 WHEN TRUE DO POS[X]=40
FA[X]=1000
N30 ID=2 WHEN 20.0 < $AA_IM[X] DO
PRESETONS(Y,20)
N40 M30
Comment
; X, Y: Geometry axes
; Neutral axis
; $AA_IM: Set position in the
MCS
; Geometry axis X traverses
Comment
; X, Y: Geometry axes
; X command axis
; $AA_IM: Set position in the
MCS
Function Manual, 08/2018, 6FC5397-5BP40-6BA2
Synchronized actions