Coupled-Axis Motion: Trailon, Trailof - Siemens sinumerik 840d Programming Manual

08.97
10
840D
NCU 572
NCU 573

10.4.22 Coupled-axis motion: TRAILON, TRAILOF

Function
DO TRAILON(following axis, leading axis,
coupling factor)
DO TRAILOF(following axis, leading axis,
leading axis 2)
When the coupling is activated from the
synchronized action, the leading axis can be in
motion. In this case the following axis is accelerated
up to the set velocity. The position of the leading axis
at the time of synchronization of the velocity is the
starting position for coupled-axis motion. The
functionality of coupled-axis motion is described in
the Section "Path traversing behavior".
Activate asynchronized coupled motion:
... DO TRAILON(FA, LA, CF)
Deactivate asynchronized coupled motion:
... DO TRAILOF(FA, LA, LA2)
Programming example
$A_IN[1]==0
$A_IN[2]==0
G0 Z10
G0 Y20
...
G1 Y22 V25
...
TRAILOF(Y,V)
TRAILOF(Z,W)
 Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
10.4 Actions within synchronized actions
810D 840Di
CCU2
DO TRAILON(Y,V,1)
DO TRAILON(Z,W,-1)
where: FA:
LA:
CF:
where: FA:
LA:
LA2:
Activate 1st combined axis pair when digital input is 1
Activate 2nd combined axis pair
Infeed of Z and W axes in opposite axis directions
Infeed of Y and V axes in same axis
directions
Superimpose dependent and independent movement
of coupled-motion axis "V"
Deactivate 1st coupled axis
Deactivate 2nd coupled axis
Motion-Synchronous Action
Activate coupled-axis motion
Deactivate coupled-axis
motion
Following axis
Leading axis
Coupling factor
Following axis
Leading axis
Leading axis 2, optional
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