Axis Coordination - Siemens sinumerik 840d Programming Manual

Motion-Synchronous Action
10
10.4 Actions within synchronized actions
840D 840D
NCU 571 NCU 572
NCU 573

10.4.19 Axis coordination

Function
Typically, an axis is either moved from the part
program in the motion block or as a positioning axis
from a synchronized action.
If the same axis is to be traversed alternately from
the part program as a path or positioning axis and
from synchronized actions, however, a coordinated
transfer takes place between both axis movements.
If a command axis is subsequently traversed from
the part program, preprocessing must be
reorganized. This, in turn, causes an interruption in
the part program processing comparable to a
preprocessing stop.
Programming example
Move the X axis from either the part program or the
synchronized actions:
N10 G01 X100 Y200 F1000
...
N20 ID=1 WHEN $A_IN[1]==1 DO
POS[X]=150 FA[X]=200
...
CANCEL(1)
...
N100 G01 X240 Y200 F1000
;X becomes the path axis; before motion, delay occurs because of axis transfer
if digital input was 1 and X was positioned from the synchronized action.
Programming example
Change traverse command for the same axis:
ID=1 EVERY $A_IN[1]>=1 DO POS[V]=100 FA[V]=560
ID=2 EVERY $A_IN[2]>=1 DO POS[V]=$AA_IM[V] FA[V]=790
10-378
FM-NC 810D 840Di
;Start positioning from the synchronized action if a digital input >= 1
Axis follows, 2nd input is set, i.e. end position and feed
for axis V are continuously followed during a movement
when two synchronized actions are simultaneously active.
X axis programmed in the part program
Starting positioning from the synchronized
action if a digital input is set
Deselect synchronized action
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
08.97
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