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  1. #1

    Join Date
    Jun 2020
    Posts
    7

    Heidenhain TNC 426 CF

    I have a Heidenhain TNC 426 CF CNC machine. It is giving the error below:

    HEIDENHAIN OPERATING SYSTEM-FATAL ERROR MESSAGE
    SUN JAN 10 07:00:11 2021
    EXCEPTION-TASK NOT INSTALLED
    PC=004CC052
    ACTIVE TASK =T_HAUPT

    Any ideas on how to solve this problem?

    Kindly assist

  2. #2

    Join Date
    Jun 2020
    Posts
    7

    Re: Heidenhain TNC 426 CF

    The machine is a Vansdorf TOS WHN110.

  3. #3
    Member
    Join Date
    Sep 2009
    Posts
    63

    Re: Heidenhain TNC 426 CF

    Hi

    This might be a problem with your hard disk- there is a process for installing and re-initializing the hard disk for the TNC426 available in their service manual (available on the heidenhain website)

    You would need a new 2.5gb IDE Hard disk (SSD works better in my opinion) and after reinstalling the TNC system you can reload your parameter and PLC backups

    Best regards

    JSS

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