Review
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1
The position of any point (A) defined with respect to the programme origin (OP) is converted by the CNC into
coordinates with respect to the measurement origin (OM):
B'
OC
Z
MA
OP
OM
∆ X
X DAT1 (+ X DAT2)
Z
X
X
PA
X
MA
Z
PA
∆ Z
Z DAT1 (+ Z DAT2)
A
B' = –B
Programme coordinates Measurement coordinates
(with respect to OP) (with respect to OM)
X
PA
X
MA
= X
PA
+ X DAT1 (+ X DAT2) + ∆X
with
∆X = X DAT3 x cos B - Z DAT3 x sin B
Y
PA
Y
MA
= Y
PA
+ Y DAT1 + Y DAT2
Z
PA
Z
MA
= Z
PA
+ Z DAT1 (+ Z DAT2) + ∆Z
with
∆Z = Z DAT3 x cos B + X DAT3 x sin B
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