Re: LinuxCNC: if I can choose step/dir or analog on my amps, which should I use?

Thank you for all your responses. I actually have some Granite Devices amps right now, so that drives some of the equation here. There are other factors too, such as the MB I'm using, but the information was good. It sounds like the analog is the preferred route.

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Alan" <writetoalan@...> wrote:
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> I have a few basic questions that I'd thought I'd solicit thoughts on... Before I state these, let me define the project. It is the conversion of a Hurco KMB-1 mill. I will be using the original Electro-Craft brushed servos, LinuxCNC, and Granite Devices servo amps.
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> Now for the questions:
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> 1. The Granite Devices amps can work in either step or analog mode. I plan on using a Mesa Electronics FPGA board so a step generator should yield good results. With that in mind, which way is best, analog or step/direction? Encoders will be used in either case; with step/direction the drive will monitor for stall and with analog the encoders will be used for feedback to both the drive and the control.
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> 2. Question #1 helps drive which Mesa interface board to use, but I thought I'd ask what people have as their favorite Mesa setups, and why.
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> 3. Is there a product *other* than Mesa's that people might recommend, and why.
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> Thanks!
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