HEIDENHAIN TNC 620 User Manual page 18

Fundamentals
TNC model, software and features
New and modified cycle functions 81760x-02
New cycle G239 ASCERTAIN THE LOAD for LAC (Load Adapt.
Control) load-dependent adaptation of control parameters
(option 143)
Cycle G270 CONTOUR TRAIN DATA has been added (option 19)
Cycle G139 CYL. SURFACE CONTOUR has been added (option
1)
The character set of Machining Cycle G225 ENGRAVING has
been expanded with the CE character, ß, the @ character and
system time
Cycles G252-G254 (option 19) have been expanded with the
optional parameter Q439
Cycle G122 ROUGH-OUT (option 19) has been expanded by the
optional parameters Q401, Q404
Cycle G484 CALIBRATE IR TT (option 17) has been expanded by
the optional parameter Q536
Further information: Cycle Programing User's Manual
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HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016