General Navigation; Operating Modes - HEIDENHAIN ND 522 - 2-2011 User Manual

General Navigation

Use keypad to enter numeric values within each field.
The ENTER key will confirm the entry within a field, and return to the
previous screen.
Press the C key to clear entries, and error messages, or return back
to the previous screen.
SOFT KEY labels show the various milling, or turning functions.
These functions are selected by pressing the corresponding soft key
directly below each soft key label. There are 2 pages of selectable
soft key functions. These are accessed using the LEFT/RIGHT
ARROW keys.
The LEFT/RIGHT ARROW keys move through pages 1, and 2 of the
soft key selectable functions. The current page will be highlighted in
the Status bar at the top of screen.
Use the UP/DOWN ARROW keys to move between fields within a
form, and list boxes within a menu. The orientation of the cursor is
such that it will return to the top once it has reached the bottom of
the menu.

Operating Modes

The ND 522/523 has two operating modes: Distance-To-Go
(incremental), and Actual Value (absolute). The Distance-To-Go
feature (which will be referred to as incremental in this manual)
enables approach to nominal positions by traversing to display value
zero. When working within the incremental mode either enter nominal
coordinates as either incremental, or absolute dimensions. The
Actual Value feature (which will be referred to as absolute in this
manual) 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.
While in the Absolute Mode, if the ND 522/523 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 522/523 is configured for a lathe, all tool offsets are used in
both the Incremental, and Absolute modes.
Press the INCREMENTAL / ABSOLUTE hard key to toggle between
these two modes. To view soft key functions in either Incremental, or
Absolute 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. See "Enabling Z Coupling" on page
67.
18 I Operating Instructions