Diagnostics; Keypad Test; Edge Finder Test; Display Test - HEIDENHAIN ND 780 Handbuch

Diagnostics

The DIAGNOSTICS form provides access for testing the keypad, edge
finders, and encoders.

Keypad Test

An image of the keypad provides an indication when a switch is
pressed, and released.
Press each hard, and soft key to test. A dot will appear on each key

when it has been pressed indicating that it is operating properly.
Press the C key two times to exit the keypad test.


Edge Finder Test

To test the grounding edge finder, touch the edge finder to a part,

an astric (*) will appear above the left edge finder symbol. To test
the electronic edge finder, touch the edge finder to a part, an astric
(*) will appear above the right edge finder symbol. Depending on
which type of edge finder is used, dictates over which icon the * will
be displayed. The (*) shown on the display indicates that the edge
finder is communicating with the readout.

Display Test

To test the display, press the enter key to set the display to solid

black, solid white, and then back to normal.

Encoder Signal Plot

This parameter allows the operator to plot the signal of each encoder.
Select which encoder to be observed.

Cursor to the desired input, and press ENTER.

As the encoder is moved, the signals of the A & B channels will be

seen.
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II Technical Information