Hr 410 Portable Handwheel; Checking The Keys - HEIDENHAIN iTNC 530 Service Manual

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24.3 HR 410 Portable Handwheel

The keys cannot contact any more (defective contact, line, etc.) or are in continuous contact

(adhesion of the key by strong contamination, jammed chips, etc.).

With the PLC diagnostic functions TABLE or LOGIC DIAGRAM you can check the function of the

handwheel keys my means of the corresponding PLC inputs:

MP7645 determines whether the handwheel keys are evaluated by the NC or the PLC.

Evaluation of the keys via the NC. --> MP7645.0 = 0

All keys are evaluated by the NC except the keys A, B and C!

Press EMERGENCY STOP.

Call the table with the PLC inputs or start the logic diagram.

--> see "PLC Diagnosis" on page 10 – 73.

Press the handwheel keys.

Check whether the corresponding inputs change to 1.

HEIDENHAIN Service Manual iTNC 530