Gene, remember that the serial ports were used up to 115 KBaud in professional applications. Perter
Am 18.02.2017 12:44, schrieb Gene Heskett: > On Saturday 18 February 2017 05:44:03 Sven Wesley wrote: > >> Hi all! >> >> Long time no see, been busy working. :) >> I bought a CNC engraver, really high quality but it has an old Dos(!) >> PC. Here comes a retrofit! >> The 60 000 RPM VFD is well documented, the drivers are not. The PC >> port looks like a parallel port but is labelled 'com 2'. I guess the >> drivers are step/dir. Anyone with a nice idea how to figure it out? >> I will try to see if the factory have any manuals left. > That might be your best bet. A closeup pix of one of the motors, > including the label might help someone to recognized them. The one I can > see most of in this pix sure looks a lot like a servo to me. Too long > for most steppers. The driver box may be quite a complex construction > in that event. Com 2 may well be an rs232, the original specs did use a > db-25 connector. You may have to put a scope on it to measure the bit > time to determine the baud rate. Or if the pc still lives, it may be in > the autoexec.bat. Somewhere in this midden heap, I've a book on the > older serial ports. No idea if it might be helpfull, but I'd be curious > to see how they shoved all the data it takes to run 3 motors and a > spindle thru what might be a 9600 baud serial port. And I can't find it > in this room, which means its in the basement, and it was mix-mastered > by contractors from Basement Systems last spring as the dug a ditch for > drainage and routed it to a sump for automatic pumping out.. And because > they needed access to all the walls, everything is piled 6 feet deep in > the middle. And no one knows which box contains what. > > Cheers, Gene Heskett --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
