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IndustryArena Forum > CNC Electronics > Stepper Motors / Drives > Why are there two half step settings on my driver? A or B?
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  1. #1
    Join Date
    Oct 2009
    Posts
    23

    Why are there two half step settings on my driver? A or B?

    I have a bit of experience working with several other motor drivers over the last few years, but I have not come across this before. Its a small tb6600 based unit 4.5A 42v...

    On the dipswitch settings there is a setting for 'half step A' and 'half step B'. Whats the difference? Attached is a pic of a similar unit
    Attached Thumbnails Attached Thumbnails TB6600_large.jpg  

  2. #2
    Join Date
    Jan 2005
    Posts
    1943

    Re: Why are there two half step settings on my driver? A or B?

    All is described in the datasheet for the driver chip. Basically, it is a difference in how the current is applied to each coil for 1/2 stepping. You can see how this is done in the diagrams on pages 18 and 19 of the attached datasheet.

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