Siemens SINUMERIK 840D sl Function Manual page 797

N50 POS[X]=0
N60 X10 F100
N70 M30
At direction reversal (N50), the axis first brakes to reach the target position, before it can be
traversed in the opposite direction.
For block change condition "Braking ramp" in synchronized action:
In the technology cycle:
FINEA
POS[X]=100
ADISPOSA(X,2,0.3)
IPOBRKA(X,100)
POS[X]=200
POS[X]=250
N40 POS[X]=250
POS[X]=0
M17
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
; the X axis brakes and traverses back
; to position 0
; the block change occurs at
; position 0 exact stop fine
; End of motion criterion fine exact stop
; Technology cycle block change takes place
; when the X axis has reached position 100
; and exact stop fine.
; Define tolerance window actual position for
; X axis as 0.3
; Activate block change criterion braking ramp
; Technology cycle block change takes place
; as soon as the X axis starts to brake and
; the X axis actual position is ≥ 199.7.
; X axis does not brake at position 200,
; but continues moving
; to position 250, as soon as the X axis
; begins to brake and reaches position
; ≥ 249.7, the block changes in the
; technology cycle.
; the X axis brakes and traverses back
; to position 0
; the block change occurs at position 0
; and exact stop fine.
P2: Positioning axes
11.6 Block change
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