HEIDENHAIN TNC 122 User Manual - Manual (Page 7)

TNC 122 7
Scope of this Manual
This manual describes the operation of the TNC 122 from the
software version
Progr. 246 xxx 01.
The three x's represent any numbers.
TNC 122
TNC-Familie
What is NC?
NC stands for Numerical Control, that is, control of a machine tool
by means of numbers. Modern controls such as the TNC have a
built-in computer for this purpose and are therefore called CNC
(Computerized Numerical Control).
From the very beginning, the TNCs from HEIDENHAIN were devel-
oped specifically for shop-floor programming by the machinist. This
is why they are called TNC, for “Touch Numerical Controls.”
The TNC 122 is a straight cut control for milling, drilling, and boring
machines with up to three axes.
Differences from the TNC 121
The TNC 122 features the following improvements over the
TNC 121:
•
Larger program memory
• Tool compensation
• Programmable feed rate
• RS-232-C/V.24 data interface
Programming
Workpiece machining is defined in a part program. It contains a
complete list of instructions for machining a part, for example the
target position coordinates or the feed rate
For detailed technical information, refer to the Technical
Manual for the TNC 122.