HEIDENHAIN iTNC 530 (340 422) ISO programming - Manual (Page 490)

490 12 MOD Functions
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Changing the setting for dependent files
In addition to the file extension .H, dependent files also have the
extension .SEC.DEP (SECtion DEPendent) or .T.DEP.
The TNC creates files with the .SEC.DEP extension if you work with the
structure function. The file contains information needed by the TNC
to rapidly jump from one structure point to the next.
The TNC creates files with the extension .T.DEP as soon as you have
run a program in the Test Run mode of operation. In this file the TNC
stores all tools (tool numbers, tool radii and tool ages) and program
calls that occur in the program.
U U U U To select the file manager in the Programming and Editing mode of
operation, press the PGM MGT key
U U U U To select the MOD function, press the MOD key.
U U U U To select the Dependent files setting: Using the arrow keys, move
the highlight onto the Dependent files setting and use the ENT key
to switch between AUTOMATIC and MANUAL.
Dependent files are only visible in the file manager if you
selected the MANUAL setting.
If dependent files exist for a file, then the TNC displays a +
in the status column of the file manager.