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    If you lose power on a M340 extended rack, do you lose communication to racks down the line?

    M340 extended rack communication with loss of power

    Product Line
    Modicon M340

    Loss of power

    If you lose power on an extended rack in a M340 system the remaining racks will communicate to the main head rack as long as the physical link is not broken.

    If there are four extended racks in an M340 system and the second rack loses power, racks three and four will still be communicating to the main head rack.


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