HEIDENHAIN TNC 128 (77184x-01) - Manual (Page 336)

336 Test run and program run
13.5 Pr
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am r
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n  Go to the first block of the current program to start a block scan:
Enter GOTO "0"
 Select mid-program startup: Press the MID-
PROGRAM STARTUP soft key
 Start-up at N : Enter the block number N at which the
block scan should end
 Program : Enter the name of the program containing
block N
 Repetitions : If block N is located in a program section
repeat or in a subprogram that is to be run repeatedly,
enter the number of repetitions to be calculated in the
block scan
 Start mid-program startup: Press the machine START
button
 Contour approach (see following section)
Entering a program with the GOTO key
If you use the GOTO block number key for going into a
program, neither the TNC nor the PLC will execute any
functions that ensure a safe start.
If you use the GOTO block number key for going into a
subprogram,
 the TNC will skip the end of the subprogram (LBL 0)
 the TNC will reset function M126 (Shorter-path traverse
of rotary axes)
In such cases you must always use the mid-program
startup function.