Re: [Emc-users] MESA 8i20 - how to get more juice from it?

[andy p. <bod...@gm...>]

On 24 September 2013 20:56, propcoder <mar...@gm...> wrote:
> There are so many parameters (instead of 1 actually needed IMO):
> current-minlim, maxlim
> current-scalemax
> nvmaxcurrent
>
> Maybe current-scalemax should be equal to 1?

The way the 8i20 works is that it is sent a signed 16-bit number, and
32768 = the max current that the drive is set to.

This 16-bit number is calculated using scalemax. So if you want to set
scalemax to 1, that is entirely reasonable. Then a PID output of 1
would give you nvmaxcurrent amps.

The maxlim and minlim values are provided to limit the value. Bear in
mind that the 8i20 uses the same driver as every other smart-serial
device, and they all have exactly the same pins.

-- 
atp
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