HEIDENHAIN TNC 306 Technical Manual - Manual (Page 448)

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TNC 406/TNC 306 4 Data transfer with BCC 8-35
4.1.1 Calling a program directory
In FE1 mode, the following ESC sequence is output for the external directory request if the function
"Download selected program" was selected.
<DC3><ESC><DC1><0><SP><D><CR><LF>
After this request the TNC expects the following input:
The first 4 characters which are each concluded with <CR><LF> are not considered. Then in the
following lines which are each concluded with <CR><LF>, only the program name and – after any
number of blank spaces – the number of sectors is stored.
XXXXXX "Name" "Sectors" XXXXXX <CR><LF>