HEIDENHAIN TNC 320 - CONTOUR TRAIN DATA (Cycle 270, DIN;ISO: G270); Please Note While Programming; Cycle Parameters

CONTOUR TRAIN DATA (Cycle 270, DIN/ISO: G270) 7.10
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HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
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7.10 CONTOUR TRAIN DATA (Cycle 270,
DIN/ISO: G270)
Please note while programming:
You can use this cycle to specify various properties of Cycle 25
CONTOUR TRAIN.
Cycle 270 is DEF active, which means that it
becomes effective as soon as it is defined in the part
program.
If Cycle 270 is used, do not define any radius
compensation in the contour subprogram.
Define Cycle 270 before Cycle 25.
Cycle parameters
Q390 Type of approach/departure?: Definition of
the type of approach or departure:
Q390=1:
Approach the contour tangentially on a circular arc
Q390=2:
Approach the contour tangentially on a straight line
Q390=3:
Approach the contour at a right angle
Q391 Radius comp. (0=R0/1=RL/2=RR)?: Definition
of the radius compensation:
Q391=0:
Machine the defined contour without radius
compensation
Q391=1:
Machine the defined contour with compensation to
the left
Q391=2:
Machine the defined contour with compensation to
the right
Q392 App. radius/dep. radius?: Only in effect if
tangential approach on a circular path was selected
(Q390 = 1) Radius of the approach/departure arc.
Input range 0 to 99999.9999
Q393 Center angle?: Only in effect if tangential
approach on a circular path was selected (Q390 = 1)
Angular length of the approach arc. Input range 0 to
99999.9999
Q394 Distance from aux. point?: Only in effect if
tangential approach on a straight line or right-angle
approach is selected (Q390=2 or Q390=3). Distance
to the auxiliary point from which the TNC is to
approach the contour. Input range 0 to 99999.9999
NC blocks
62 CYCL DEF 270 CONTOUR TRAIN
DATA
Q390=1 ;TYPE OF APPROACH
Q391=1 ;RADIUS
COMPENSATION
Q392=3 ;RADIUS
Q393=+45 ;CENTER ANGLE
Q394=+2 ;DISTANCE