6 optional block skip, Application, Inserting the "/" character – HEIDENHAIN TNC 128 (77184x-01) User Manual
Page 338: Erasing the "/" character, 6 optional bloc k skip 13.6 optional block skip

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Test run and program run
13.6 Optional bloc
k skip
13.6 Optional block skip
Application
In a test run or program run, the control can skip over blocks that begin
with a slash "/":
To run or test the program without the blocks
preceded by a slash, set the soft key to ON
To run or test the program with the blocks preceded
by a slash, set the soft key to OFF
Inserting the "/" character
In the Programming mode you select the block in which the character
is to be inserted
Select the INSERT soft key
Erasing the "/" character
In the Programming mode you select the block in which the character
is to be deleted
Select the REMOVE soft key
This function does not work for TOOL DEF blocks.
After a power interruption the TNC returns to the most
recently selected setting.