HEIDENHAIN NC 124 - Manual (Page 59)

5 Programming
TNC 124 59
Programming
Operating mode PROGRAMMING AND EDITING
In the PROGRAMMING AND EDITING mode of operation you can
store the individual work steps that are required for recurring
machining operations, for example for small-lot production.
Programs in the TNC
Programs contain the work steps for workpiece machining. You can
edit programs, add work steps and run them as often as you wish.
The External mode enables you to store programs with the HEI-
DENHAIN FE 401 floppy disk unit and load them into the TNC again
on demand—you don't need to retype them. You can also transfer
programs to a personal computer or printer.
Storage capacity
The TNC 124 can store a maximum of 20 programs with a total of
2000 NC blocks. A single program can contain a maximum of 1000
NC blocks.
Position display during programming
In the PROGRAMMING AND EDITING mode of operation, the TNC
continuously displays the current positions at the bottom of the screen
to left of the lowest soft key.
Programmable functions
• Nominal position values
• Feed rate F, spindle speed S and miscellaneous function M
• Tool call
• Pecking and tapping cycles
• Bolt hole circle and linear hole patterns
• Program section repeats:
A section of a program only has to be entered once and can then
be run up to 999 times in succession.
• Subprograms:
A section of a program only has to be entered once and can then
be run at various points in the program.
• Datum call
• Dwell time
• Interrupt program
Transfer position: Teach-In mode
This mode allows you to transfer the actual positions of the tool di-
rectly into a program, such as the nominal positions for workpiece
machining, etc.
In many cases the Teach-In function will save you considerable pro-
gramming work.
What happens with finished programs?
For workpiece machining, programs are executed in the operating
mode PROGRAM RUN. See Chapter 10 for an explanation of this
mode.
5
Fig. 5.1: The first soft-key row in the operat-
ing mode PROGRAMMING AND
E D I T I N G