42690Re: Parker Hannifin CD20 drives with Mach3
- Nov 1 1:48 AMThe drives are connected to a backplane, but the data lines are just a
straight passthru, there is no logic on the backplane just a couple of
fuses and connectors to attach to power.
--- In firstname.lastname@example.org, Les Newell <lesnewell@h...> wrote:
> Hi Corey,
> Are you using a Parker drive rack or are you directly connecting to the
> drives? The drives use 12V logic, not 5V. The Campbell board uses 5V.
> You need to use an open collector buffer chip, something like a ULN2003
> darlington driver should work.
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