MicroVAX/VAXstation 2000 (was Re: Back from the fleamarket)

From: Jay West <west_at_tseinc.com>
Date: Tue Jul 3 19:56:52 2001

----- Original Message -----
> > RS-432 really won't do me any good.
>
> Doh! (to quote the new OED) That should read "RS-423" In any case, it
> isn't incompatible with RS-232.
>
> > So, is there always an RS-323 console on the DB25?

I'm going from foggy memory here - but isn't the only difference between
RS232 and RS423 the voltage levels? I think RS232 is something like 0-12
volts and RS423 is 0-5 volts or something like that. As a result, it becomes
a question of tolerances in the circuit. If I recall, on the General
Automation Zebra Pick machines, they had RS423 ports, and we hooked up RS232
devices to them all the time. Almost never did we find an RS232 device that
wouldn't work on the RS423 ports. Vague memory here.

Jay West
Received on Tue Jul 03 2001 - 19:56:52 BST