6 – 208 HEIDENHAIN Technical Manual TNC 426, TNC 430
6.12.9 Tapping with Floating Tap Holder and Coded Spindle-Speed Output
The following diagram shows the time sequence of the cycle:
If the spindle speed is output in code, the spindle and feed-rate ramps cannot
be synchronized:
7
77
7 Enter the advanced switching time of the spindle in MP7120.1.
The dwell time for rotational direction reversal (MP7120.0) and the
programmed dwell time have the same effect as the nominal speed value
output.
MP7120.1 Advanced switching time of the spindle during tapping
with coded spindle-speed output
Input: 0 to 65.535 [s]
0
F
0
S
M03
M05
M04
M4092
M4030
MP7120.0
MP7120.1
Dwell time from
CYCL DEF 2.3
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