Re: [Emc-users] Spindle Control

[Peter C. W. <pc...@me...>]

On Fri, 5 Jul 2019, Andy Pugh wrote:

> Date: Fri, 5 Jul 2019 23:57:52 +0100
> From: Andy Pugh <bod...@gm...>
> Reply-To: "Enhanced Machine Controller (EMC)"
>     <emc...@li...>
> To: "Enhanced Machine Controller (EMC)" <emc...@li...>
> Subject: Re: [Emc-users] Spindle Control
> 
>
>
>> On 5 Jul 2019, at 19:41, Peter C. Wallace <pc...@me...> wrote:
>>
>> then net motions absolute speed command to the stepgens velocity command
>
> Surely you would net the signed speed command to the stepgen and use the dir pin for VFD direction control?

Yeah, I was thinking of the 7I76 analog out that needs an usigned PWM value

(also you might need "foward" rather than "dir" since forward folds in the 
spindle enable)

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Peter Wallace
Mesa Electronics

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