HEIDENHAIN TNC 640 (34059x-02) ISO programming - Manual (Page 536)

MOD functions
18.2 Machine settings
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TNC 640 | User's Manual for DIN/ISO Programming | 5/2013
18.2 Machine settings
External access
The machine tool builder can configure the external
access options. Refer to your machine manual.
With the MOD function External access you can grant or restrict
access to the TNC. If you have restricted the external access it
is no longer possible to connect to the TNC and exchange data
via a network or a serial connection, e.g. with the TNCremo data
transfer software.
Restricting external access:
In the MOD menu select the Machine settings group
Select the External access menu
Mark the selection field Restrict external access (with the
space bar or mouse)
Press the APPLY soft key