HEIDENHAIN iTNC 530 (60642x-04) Cycle programming - Manual (Page 116)

116 Fixed Cycles: Tapping / Thread Milling
4.6 THREAD MILLING (Cy
c
le
262, DIN/ISO:
G262)
Danger of collision!
Enter in MP7441 bit 2 whether the TNC should output an
error message (bit 2=1) or not (bit 2=0) if a positive depth
is entered.
Keep in mind that the TNC reverses the calculation for pre-
positioning when a positive depth is entered. This
means that the tool moves at rapid traverse in the tool axis
to set-up clearance below the workpiece surface!
Keep in mind that if the depth is changed, the TNC adjust
the starting angle so that the tool reaches the defined
depth at the 0° position of the spindle. In such cases,
recutting the thread may result in a second thread groove.
Enter in MP7441 bit 0 whether the TNC should output an
error message (bit 0=0) or not (bit 0=1) if spindle rotation
is not active when the cycle is called. The function also
needs to be adapted by your machine manufacturer.