Cat 5/6 cables make sense if your devices are quite far away, they are a waste of material if the distance is less than half a meter in a not so noisy environment.Looks like thats not really the case.
Dallas recommendation is UNSHIELDED CAT5 cable and to not use shielded cable as the capacitance increases.
You can read stuff like (from 1-Wire-Design Guide v1.0): For short runs (where the total length of the 1-Wire bus is < 30 meters and the network only has a few slave devices on it), cable selection for use on the MicroLAN is reasonably simple, as even flat modular phone cable can work with a small numbers of 1-Wire slave devices.
On the other hand you have people who have problems with just 20 meters and CAT5/6 where you can read in docs that
100 or 200 meters shouldn't be a problem.
Then you can read:
Grounding unused wires or shields in a cable adds capacitance, which can significantly increase the RC time constant, they should be left disconnected. You want to limit capacitance throughout a 1-wire system as much as possible to maximize cable length and limit RC effects. Dallas Semiconductor recommends that unused wires and shields be left unconnected at both ends of the cable. The wires should be left floating.
But then you have the docs from companies that sell 1-Wire systems that make recommendations like i showed you.
Also some say "loop the shielding trough" others say "loop the shielding trough and connect it on one side".
When i looked at 1-Wire first before 2 years and decide to use it everything was clear.
Now i have everywhere CAT 6 for everything cause its relatively cheap.
It's time to connect now everything and maybe i was reading to much in forums and
on seller stuff and it confused me.
If i look at Dallas/Maxim and "1-Wire-Design Guide v1.0-1" or "1-Wire Application Guide 1.03" i think
its best to really just use 3 wires (DATA/GND/5Vcc).
Only thing is that i used shielded CAT6 and didn't even know that unshielded CAT6 exist.
I know that in the U.S. they use allot of unshielded CAT5 (UTP) cable but CAT6 UTP is new to me.
Here in Germany since years shielded cable is standard.
Even for my AC power i used shielded cables to have no EMC/EMI between them and my Network/Home Automation.
Hm, so the only question left is: To loop or not to loop the unused wires and shield from slave to slave.