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X and Y micro limit switches for both ends

Discussion in 'Other Builds' started by timbopoise, Jun 12, 2024.

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  1. timbopoise

    Builder

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    I'm confused by the wording vs image related to limit switches.

    My situation: Both X and Y need limit switches at either extreme ends, so I assume I wire the same axis limit switches in parallel or series depend on the convention used by the GND - SIG. I'm using micro switches.

    According to the Note in the documentation "Make sure to set $5=7 to use Normally Open switches with grblHAL on the BlackBox X32". There's never a mention of "normal closed" so I assume the blackbox x32 only has, as stated, NO convention.

    However, the image diagram shows what appears to be a normally closed wiring. I assume "normal" means a limit has not been encountered. As shown therefore, the circuit is closed and conducting.

    Bottom line: Am I connecting the limit switches as shown in image (to NC) and then wiring the two limit switches in series for a single axis or the other way around (NO and parallel)?

    Thanks.

    ref: docs:blackbox-x32:connect-micro-limit [OpenBuilds Documentation]
     
  2. Giarc

    Giarc OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    The images you linked to show them wired as NO (Normally open). Only the NO and Common (aka ground) are hooked up.
    upload_2024-6-12_19-19-42.png

    If wiring NO at both extremes, they are wired in parallel.
     
    #2 Giarc, Jun 12, 2024
    Last edited: Jun 12, 2024

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