January 23, 2014 03:30AM
Having problems writing step command. I've 3 of them and get the same response.
Using SWS command step 1, speed 1 returns "Problem writing step instruction, check mode is 0.
Mode is 0 as confirmed by BVCOM2. When writing a(address) s1,1,0 returns error4[15].
aR20,1 returns 0,[06]. Serial mode selected.

Suggestions welcome.
Re: bv4306
January 23, 2014 03:33AM
Sorry should be bv4603.
Re: bv4306
January 23, 2014 10:03AM
the minimum step rate is 70 and that is what is causing the error, this is explained in the datasheet in section 13.3, at the end of the document. It was updated in December so your browser may be caching a previous version. To add to the confusion the table itself stated 0 - 65000 so that has now been updated.

70 is very slow when microstepping (45 seconds for 1 revolution), but the chapter offers advice on how to go slower than 70 steps per second.
Re: bv4306
January 23, 2014 02:34PM
Thanks, we'll give it another go.
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