Siemens SINUMERIK 840D sl Function Manual page 851

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
Z500
G0 Z540 B0
M124
STOPRE
B270
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
13.3 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
; Insert the pallet with built-on axis
into the machine
Activate the software limit switches
on the B axis from the PLC
DB35, DBX12.4=1
;
; Trigger a preprocessing stop
Rotary Axes (R2)
851