LSI Explanation


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    Default LSI Explanation

    Hi all,

    Can anyone explain what LSI stands for and what its function is within the FANUC control?

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    Community Moderator Al_The_Man's Avatar
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    It usually refers to the IC technology used, LSI= Large Scale Integration.
    IOW multi pin DSP or CPU type IC's used.
    In the early days multiple IC's were used to perform simple processes.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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    Thanks Al.
    So any LSI alarms on the newer i Series controls refers to issues in the relative circuit board? Such as a 749 S-SPINDLE LSI ERROR refers to a problem with a circuit board within the amplifier...



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    Community Moderator Al_The_Man's Avatar
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    I could not find that particular LSI fault in the manual, but from the other LSI descriptions it almost points to a memory problem of some kind?
    I see LSI overload when tapping for instance?
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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    Gold Member fordav11's Avatar
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    an error like '749 - S-SPINDLE LSI ERROR' would suggest first a faulty serial communication cable between main board and serial spindle amp module. If not then a board fault in the serial spindle amp module.
    http://www.cncalarms.com/fanuc/fanuc...ndle-lsi-error
    check/change the cable first, it's cheaper



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LSI Explanation

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