Siemens SINUMERIK 840D sl Function Manual page 885
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Supplementary conditions:
It is only possible to activate/deactivate software-limit-switch monitoring via the PLC interface
for modulo axes.
Traversing-range monitoring for modulo axes can be implemented only if the axis is
referenced and one limiting pair is active.
This always applies in the case of software limit switches, since these are always
activated/deactivated in pairs. To monitor working-area limitations correctly, both limitations
must have been activated, either via G26/G25 or setting data
SD43400 $SA_ WORKAREA_PLUS_ENABLE
and
SD43410 $SA_WORKAREA_MINUS_ENABLE.
Example of a traversing-range-limitation switchover
A pallet with several clamped workpieces should be machined successively on a modulo
rotary axis. This pallet is then replaced by one with a built-on axis whose operating range
must be monitored to prevent damage to supply lines.
Configuration:
MD30300 $MA_IS_ROT_AX[AX4] = 1
MD30310 $MA_ROT_IS_MODULO[AX4] = 1
MD36110 $MA_POS_LIMIT_PLUS[AX4] = 340
MD36100 $MA_POS_LIMIT_MINUS[AX4] = 350
Extract from part program:
M123
STOPRE
S1000 M3
G4 F2
G1 X0 Y300 Z500 B0 F5000
CYCLE84(500,400,0,350,0,1,4,10,,0,500,1000) ; drilling cycle
Z500
B90
CYCLE84(500,400,0,350,0,1,4,10,,0,500,1000) ; drilling cycle
Z500
B180
CYCLE84(500,400,0,350,0,1,4,10,,0,500,1000) ; drilling cycle
Z500
B270
CYCLE84(500,400,0,350,0,1,4,10,,0,500,1000) ; drilling cycle
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Rotary Axes (R2)
Programming rotary axes
;
Insert the pallet with quadruple
clamping into the machine
Deactivate the software limit
switches on the B axis from the
PLC
DB35, DBX12.4=0
;
Trigger a preprocessing stop
885
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