HEIDENHAIN TNC 620 User Manual page 315

8.5 Nesting
Types of nesting
Subprogram calls in subprograms
Program-section repeats within a program-section repeat
Subprogram calls in program section repeats
Program-section repeats in subprograms
Nesting depth
The nesting depth is the number of successive levels in which
program sections or subprograms can call further program sections
or subprograms.
Maximum nesting depth for subprograms: 19
Maximum nesting depth for main program calls: 19, where a
G79 acts like a main program call
You can nest program section repeats as often as desired
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
Nesting 8.5
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