HEIDENHAIN ND 780 - Handbuch (Seite 150)

26
I Operating Instructions
I - 2 Gener
a
l Oper
ations f
o
r ND 780
Operating Modes
The ND 780 has two operating modes Actual Value and Distance-
To-Go.
The Actual Value Operations mode always displays the current
actual position of the tool, relative to the active datum. In this mode,
all moves are done by traveling until the display matches the nominal
position that is required. The Distance-To-Go feature enables you to
approach nominal positions simply by traversing to display value zero.
When working within the Distance-To-Go mode you can enter nominal
coordinates as either absolute or incremental dimensions.
While in the Actual Value Mode, if the ND 780 is configured for Milling
applications, only the tool length offsets are active. Both the radius and
length offsets are used in the Distance-To-Go mode to calculate the
amount of “distance-to-go” required to get to the desired nominal
position relative to the edge of the tool that will be doing the cutting.
If the ND 780 is configured for a lathe, all tool offsets are used in both
the Actual Value and Distance-To-Go modes.
Press the ACTUAL VALUE/DISTANCE-TO-GO soft key to toggle
between these two modes. To view soft key functions in either Actual
Value or Distance-to-Go mode, use the LEFT/RIGHT ARROW keys.
The turning application provides a quick method for coupling the
Z axes position on a 3 axis system.
Setup
ND 780 offers two categories for setting up operating parameters.
These categories are: Job Setup and Installation Setup. The Job Setup
parameters are used to accommodate specific machining
requirements for each job. Installation Setup is used to establish
encoder, display and communication parameters.
The Job Setup menu is accessed by pressing the SETUP soft key.
When in the Job Setup menu, the following soft keys will be available:
 INSTALLATION SETUP : Press to begin accessing the Installation
Setup parameters. See "Installation Setup Parameters" on page 87.
 IMPORT/EXPORT
: Press to begin importing or exporting operating
parameters. See "Import/Export" on page 31.
 HELP : Will open on-line help.