RS 485 wiring with CAT5 cable

I am using RS485 bus with 8051 which is working fine ( one master & 13
slaves)

My problem is how to wire these slaves using CAT5 cable which single
stranded. At every slave the there is T joint to CAT5 cable How to make
this joint very reliable.   

On Tue, 27 May 2008 06:41:59 -0500, "1206.sachin"
<1206.sachin@gmail.com> wrote:

>I am using RS485 bus with 8051 which is working fine ( one master & 13
>slaves)
>
>My problem is how to wire these slaves using CAT5 cable which single
>stranded. At every slave the there is T joint to CAT5 cable How to make
>this joint very reliable.   

The same connectors that the telecom industry uses:
<http://www.allelectronics.com/make-a-store/item/URC/3-WIRE-TELECOM-BUTT-SPLICE-UR/-/1.html>
I've also seen them at hardware stores, so check around.

-- 
Rich Webb     Norfolk, VA

>On Tue, 27 May 2008 06:41:59 -0500, "1206.sachin"
><1206.sachin@gmail.com> wrote:
>
>>I am using RS485 bus with 8051 which is working fine ( one master & 13
>>slaves)
>>
>>My problem is how to wire these slaves using CAT5 cable which single
>>stranded. At every slave the there is T joint to CAT5 cable How to make
>>this joint very reliable.   
>
>The same connectors that the telecom industry uses:
><http://www.allelectronics.com/make-a-store/item/URC/3-WIRE-TELECOM-BUTT-SPLICE-UR/-/1.html>
>I've also seen them at hardware stores, so check around.
>
>-- 
>Rich Webb     Norfolk, VA

Thanks for reply
but This link is invalid I tried the same product name & found it on other
site but they are all for telephone 2 pair OR 3 pair , Where as I need all
4 pairs of CAT5 cable 
>

On Wed, 28 May 2008 02:11:14 -0500, "1206.sachin"
<1206.sachin@gmail.com> wrote:

>Thanks for reply
>but This link is invalid I tried the same product name & found it on other
>site but they are all for telephone 2 pair OR 3 pair , Where as I need all
>4 pairs of CAT5 cable 

If you are using RS-485 this is a 2-wire connection, so one pair from
the CAT-5 cable is sufficient (provided that the line is properly
terminated and each device has pull-up/down resistors for "fail-safe"
termination).

If you do not use the fail-safe termination, you must also use a third
wire as a signal ground, so you will have to use one wire from the
second pair.

Paul

>On Wed, 28 May 2008 02:11:14 -0500, "1206.sachin"
><1206.sachin@gmail.com> wrote:
>
>>Thanks for reply
>>but This link is invalid I tried the same product name & found it on
other
>>site but they are all for telephone 2 pair OR 3 pair , Where as I need
all
>>4 pairs of CAT5 cable 
>
>If you are using RS-485 this is a 2-wire connection, so one pair from
>the CAT-5 cable is sufficient (provided that the line is properly
>terminated and each device has pull-up/down resistors for "fail-safe"
>termination).
>
>If you do not use the fail-safe termination, you must also use a third
>wire as a signal ground, so you will have to use one wire from the
>second pair.
>
>Paul
>
>Thanks 

I am using other 2 pairs to send power to nodes