Types Of Nesting; Nesting Depth - HEIDENHAIN ITNC 530 - 6-2010 DIN-ISO PROGRAMMING User Manual

8.5 Nesting

Types of nesting

Subprograms within a subprogram
Program section repeats within a program section repeat
Subprograms repeated
Program section repeats within a subprogram

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: 8
Maximum nesting depth for main program calls: 6, where a G79 acts
like a main program call
You can nest program section repeats as often as desired
242 Programming: Subprograms and Program Section Repeats