[Message Prev][Message
Next][Thread Prev][Thread Next][Message
Index][Thread Index]
RS232 over CAT5 pinouts
- Subject: RS232 over CAT5 pinouts
- From: "David Chapman" <david@xxxxxxxxxx>
- Date: Wed, 16 Feb 2005 09:59:22 -0000
- References:
<1108523444.507.19199.m12@yahoogroups.com>
I plan to move my APC UPS in to the garage but still want to monitor it via
RS232. Using DB9 to RJ45 modular adaptors I can make this work over CAT5
but
am unsure of pinouts. I know I could just connect pins 1 through 8 of the
RJ45 to pins 1 through 8 of the 9 pin D (no connection on pin 9) and as
long
as it is the same both ends it would work - but it needs to go via a patch
panel and I know there is a pinout scheme whereby if the RS232 was plugged
into a hub it would cause no damage - I think the trick is to make sure
that
the RS232 pins that carry voltage are mapped to pins that are unused by the
hub - anyone know what this pinout scheme is, I haven't been able to
Googlefind it.
David C
UKHA_D Main Index |
UKHA_D Thread Index |
UKHA_D Home |
Archives Home
|