Cat 5 Wiring schematic

[mccartma]

Can anyone tell me the the LOR standard pin layout is for cables. EIA 568 A or B and what wires are actually used.

 

[KStatefan]

Can anyone tell me the the LOR standard pin layout is for cables. EIA 568 A or B and what wires are actually used.

 

4 and 5 are the pins for the data.  You can use A or B standard cables to connect.

[Dave Batzdorf]

 

Here is the standard code.

[Tim Fischer]

As noted 4&5 are used for data.  Also 3&6 are used for accessory power (the controllers can power some devices such as an ELL or iDMX).  No other pins are used, and most controllers just loop them through untouched.

The A or B standard doesn't matter, so long as the cable is wired straight through (not crossover)

[mccartma]

Thanks Much!  I love these forums.

 

[a31ford]

I agree with Tim, on this,

 

And will also add this :

 Using NON twisted pair cables (RJ11 "Flatpack") or RJ45 "flatpack" (the flat cable where the wires are side by side, and NOT twisted) can cause spastic problems. RS 485 is a robust comm's protocol, however it doesn't like non-twisted cable for long runs (short 20 ft or under) appears to work ok,  however, "best practice" wiring, is the best practice.....

 

Greg

[Max-Paul]

Just dont mix A with B. If you do, you have a crossover cable. So in a nut shell answer is "use a patch cable".