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3 error messages, Handwheel, Handwheel defective – HEIDENHAIN TNC 415 (259 9x0) Service Manual User Manual

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SERVICE MANUAL TNC 415B/425

Page 83
Issue: 20.08.95

14.3 Error Messages

HANDWHEEL ?

- Data transfer (cable) has been interrupted
- Incorrect value entered in MP 7640.

HANDWHEEL DEFECTIVE

The light unit in the electronic handwheel is not emitting enough light, with the result that the signals
in the handwheel become too small. An error signal is sent over the serial interface of the handwheel.

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