Re: [CAD_CAM_EDM_DRO] Interface options, headless boxen, and remote control ...

Larry Edington wrote:

> RS-232 ports just aren't fast enough for high step speeds.

I'm starting to realize that.

> USB is closer to the required speed but as you, I wouldn't
> trust a USB CNC controller and feel it would largely be a waste
> of time to develop one.

My view _exactly_.

> Firewire is a better option than USB but has it's downsides
> as well for CNC.

It would be like making a SCSI interface. Not ideal.

What about RS-422? At short distances (<10'), it can do upto
10Mbps. You can also use RS-485 if you need to control more than
one device. Various multiport boards are out there that can do all
RS-232, 422 and 485 (for only a couple hundred $$$).

The "problem" here is how to "handle" it on the CNC side. Sure, we
can jack up all kinds of performance on the Linux PC/EMC side, but
what kind of designs and ICs do you have on the controller side to
handle this?

I guess I need to do more research on the end-components before I
comment anymore.

-- TheBS

--
Bryan "TheBS" Smith mailto:b.j.smith@... chat:thebs413
Engineer Absolute Value Systems, Inc. http://www.linux-wlan.org
President SmithConcepts, Inc. http://www.SmithConcepts.com