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IndustryArena Forum > Machine Controllers Software and Solutions > PlanetCNC > How to chain two ExtOut Boards and make them work
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  1. #1
    Member
    Join Date
    Jan 2016
    Posts
    7

    How to chain two ExtOut Boards and make them work

    Hello,

    I am building up a mill with a MK3 bord using TNG
    SW: 20.09.18
    HW: 2020.09.04

    Now I want to chain two ExtOut boards and don´t get them to work properly.

    Unfortunately I found no description in the manual or the tutorials, so I tried to connect each ExtOut board to a own ExtIn board (using SSEL2).
    But now both ExtOut boards are working in parallel.
    e.g. M64 H2 P3 Q1 L10 switches the 3rd relais on both boards.
    Connectiong the boards via the CAN screw connections lead to the same result.

    When I want to address e.g. Relais 9 I get an indication on the IO Panel on the screen but no relais to work.

    In the settings in paragraph I2C,TX, Ext I have set:
    SEL2 Pin Invert
    In Size 0
    Out Size 10
    Timer 1000

    Planet recomends 4000 but then the relays are not stable. They are switching off and on unadvertent.
    But using 4000 does not make a change for my issue.

    Does anybody have an idea what I am doing wrong?

    Best rgards,
    Marc

  2. #2
    Moderator
    Join Date
    Mar 2017
    Posts
    684

    Re: How to chain two ExtOut Boards and make them work

    I will investigate this and let you know.

  3. #3
    Moderator
    Join Date
    Mar 2017
    Posts
    684

    Re: How to chain two ExtOut Boards and make them work

    I'm still working on this.
    G-Code for configuring ExtOut boards to do this correctly is one of the most complex I've ever done.

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