Re: Serial Communications

["tolsen64" <tolsen64@hotmail.com>]

This is not making any sense to me at all.  This is the cable I have
working with the MOXA.  Remember, it wasn't scientifically created, but
it was created by switching wires around until it started working
(wires must be connected like this otherwise no comms at all).  I
should mention that I have no problems with Proterm 3.1 losing
characters, only with the BBS.  I don't know if this has to do with
Proterm buffering data or what.  It's just the BBS software that is
losing characters.  That's why I'm trying to figure out if it's a
handshake problem.  I need the BBS to catch all data coming in so it
can connect out to SMTP & NNTP servers and exchange messages.

GS                              Moxa DB9
Pin 3 TX-                      Pin 3 RXD
Pin 5 RX-                      Pin 2 TXD
Pin 6 TX+                     Pin 1 DCD
Pin 1 DTR                    Pin 4+8 DSR/RTS
Pin 4+8 RX+/GND         Pin 5 GND
Pin 2 HSKi                  Pin 6 DTR

Using the example 7-Wire handshake cable your post, I get this:

GS                              Moxa DB9
Pin 4 GND                   Pin 5 GND
Pin 3 TX-                      Pin 3 RX
Pin 5 RX-                     Pin 2 TX
Pin 2 HSKi                   Pin 6 DTR
Pin 1 DTR                    Pin 4 DSR
Pin 7 GPi                     Pin 7+1 CTS/DCD
??+??                          Pin 8 RTS

What would Pin 8 on the DB9 Connect to?  Is what I have correct so
far???