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Thread: FAQ: What are Pins 4 and 5 for on a DMX cable?

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    Default FAQ: What are Pins 4 and 5 for on a DMX cable?

    When the DMX standard was created it required a 5 pin XLR but 4 and 5 remained unused. Starting in 2004 the two pins have a function, a second DMX universe.

    All versions of DMX512 state that the second pair, Pins 4 and 5 of the 5-Pin XLR connector, are defined as:
    PIN 4 - Optional Second Data Link Complement (Data 2 -)
    PIN 5 - Optional Second Data Link True (Data 2 +)


    Source: http://www.usitt.org/DMXBehindtheRevision.aspx
    Last edited by DynamoBen; 06-09-2010 at 08:08 PM.
    DMX, RDM, ArtNet, sACN, and RDMnet...the future of DIY Christmas.
    Designer of the PropController an open source single-board hardware platform designed for lighting and prop control.

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