Monty
 have just seen this on UK Ebay, not really sure about it as I have not fully read the spec sheet yet but looks like it may be worth looking into, few things I see from my initial look is 25KHz clock rate is typical, 50KHz max, so not great, also -15 0 +15v output which I am not sure if it could be scaled or not. Maybe an email to the guy would give some answers.
http://cgi.ebay.co.uk/ASERVO-server-amplifier-interface-CNC_W0QQitemZ230431000642QQcmdZViewItemQQptZUK_BOI_Industrial_Automation_Control_ET?hash=item35a6c20842

http://www.eaziform.co.uk/files/CNCComps.pdf

Hood

Thanks Hood,

I'll check it out.

Monty

I have been looking and it seems weird to me, seems to have at least 4 axis Step inputs but the Dir is a common pin for all, cant see how that would work.Also the -15  0 +15 seems weird as most commercial CNC is -10  0 + 10 from what I have seen, no mention of scaling it but I suppose it may be possible to do that with the motor tuning.
 Hood