Terry Neilson wrote: > The Bridgeport that you retrofitted, did you use PPMC, or did you use the > PCI card type of interface? Aren't there advantages to using the PCI card > type for encoder counting? I'm trying to determine the best practical > approach. > Over a decade ago, I did it with a Servo-to-Go card. They have some functional problems as well as being out of date with an ISA card. I eventually fitted it with my PPMC boards and a newer computer. Why would the PCI card be "better"? It does the same function, reading encoder position. The PPMC is a bit more expensive, it was aimed at more complex retrofits, maybe with automatic tool changers or such additional systems. So, it was made a "mix and match" system so you could add exactly what functions you needed. The PPMC also has a more responsive digital to analog converter, a quad 16-bit converter. The Mesa uses a PWM digital output that is then smoothed to an analog signal.
Jon ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
