Please Note While Programming - HEIDENHAIN TNC 620 User Manual

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UNIVERSAL PECKING (Cycle 205, DIN/ISO: G205, software option 3.8
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Please note while programming:

Program a positioning block for the starting point
(hole center) in the working plane with radius
compensation R0.
The algebraic sign for the cycle parameter DEPTH
determines the working direction. If you program
DEPTH=0, the cycle will not be executed.
If you enter different advance stop distances for
Q258 and Q259, the TNC will change the advance
stop distances between the first and last plunging
depths at the same rate.
If you use Q379 to enter a deepened starting point,
the TNC merely changes the starting point of the
infeed movement. Retraction movements are not
changed by the TNC, therefore they are calculated
with respect to the coordinate of the workpiece
surface.
Danger of collision!
displayDepthErr
Use the machine parameter to
define whether, if a positive depth is entered, the
TNC should output an error message (on) or not (off).
Keep in mind that the TNC reverses the calculation
positive depth is
for pre-positioning when a
entered. This means that the tool moves at rapid
below
traverse in the tool axis to set-up clearance
the workpiece surface!
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TNC 620 | User's Manual Cycle Programming | 3/2014