HEIDENHAIN TNC 620 (73498x-02) ISO programming - Manual (Page 124)

Programming: Programming aids
4.1 Screen keyboard
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TNC 620 | User's Manual for DIN/ISO Programming | 5/2013
4.1 Screen keyboard
If you are using the compact version (without an alphabetic
keyboard) TNC 620, you can enter letters and special characters
with the screen keyboard or with a PC keyboard connected over
the USB port.
Enter the text with the screen keyboard
Press the GOTO key if you want to enter letters, for example a
program name or directory name, using the screen keyboard
The TNC opens a window in which the numeric entry field of
the TNC is displayed with the corresponding letters assigned
You can move the cursor to the desired character by repeatedly
pressing the respective key
Wait until the selected character is transferred to the input field
before you enter the next character
Use the OK soft key to load the text into the open dialog field
Use the abc/ABC soft key to select upper or lower case. If your
machine tool builder has defined additional special characters, you
can call them with the SPECIAL CHARACTER soft key and insert
them. To delete individual characters, use the Backspace soft key.