Hi all

am contemplating of re-arranging my Pylons, which would have them stacked across 2 racks next to each other. I already have 2 set of +/- connection cables, so that is not the problem. But to maintain the BMS link between the Pylons, the stock link cable would be too short.

What can I use as longer cable? A normal Cat5E or Cat6 with a straight pinout? Or does the stock cable have any crossed wires or so?

 

Edited November 21, 20223 yr by wolfandy
Typo

Yes, you can just use normal CAT5 cable.

 

7 hours ago, Jaxone said:

Yes, you can just use normal CAT5 cable.

Thanks

Standard (crossover) Cat5 or do I need to get one made with straight pinout?

Normal cat5 is straight through, but if you can post images of the two connectors showing the colours of the wires, I can easily confirm that.

Just now, p_i said:

Normal cat5 is straight through, but if you can post images of the two connectors showing the colours of the wires, I can easily confirm that.

Thanks - good point. Let me have a look by chance

I haven't seen a crossover cable since GBe came out when the PHYs got the ability to do crossover internally.

3 minutes ago, P1000 said:

I haven't seen a crossover cable since GBe came out when the PHYs got the ability to do crossover internally.

I get what you're saying, but if something looks like cat5 doesn't mean it is really cat5. For example the same connector is used for console ports on some switches and routers and those are definitely not using cat5 cables.

35 minutes ago, P1000 said:

I haven't seen a crossover cable since GBe came out when the PHYs got the ability to do crossover internally.

True 

Not sure what a crossover cable but the wiring is not done 1 to 1. i.e there is a pair that is split and not connected to its corresponding colour. 

Cat5 or Cat6 refers to the cable itself. 

The following diagram should make more sense... the wiring convention is known as T568B. There is also T568A which works just as well.  

Note that the green and green/white pair is split. i.e. not Green pair - Orange pair - Blue pair - Brown pair

This is how one runs network cable in a LAN topology. FYI you must have the split pair or it will not work on long distances. Found that out the hard way with some 30m cable runs for IP cameras ! A straight through cable (NO pairs split) resulted in loss of signal from the cameras. Re-crimping the RJ45 connectors as per T568B and the cameras worked flawlessly. BTW a short 1 to 1 (Green pair - Orange pair - Blue pair - Brown pair) cable may work without problem as was our case with the IP cameras. 

The short black cable supplied with a Pylontech battery is wired to the T568B standard. Have a look and let us know if yours is also wired the same. 

 

 

20 minutes ago, GreenMan said:

Not sure what a crossover cable but the wiring is not done 1 to 1. i.e there is a pair that is split and not connected to its corresponding colour. 

Crossover is where the orange combo on one connector goes to green combo on the other side of the cable and vice versa. Blue and brown goes straight through. But as P1000 mentioned before, these cables aren't really used anymore given that switches and network cards have become smarter over time.

PS: With T568B it's easier to see the wire colours so you don't accidentally swap pin 6 and 7, as orange and brown are close colour wise.

12 hours ago, wolfandy said:

Hi all

am contemplating of re-arranging my Pylons, which would have them stacked across 2 racks next to each other. I already have 2 set of +/- connection cables, so that is not the problem. But to maintain the BMS link between the Pylons, the stock link cable would be too short.

What can I use as longer cable? A normal Cat5E or Cat6 with a straight pinout? Or does the stock cable have any crossed wires or so?

 

Hi, you can merely extend your existing cable as it is with RJ45 female to female coupler and extend it with a standard ethernet cable. 

I have incidently used this solution on friday for pylontech to deye bmsconnectivity. 

Not sure why this discussion is so long Buy a normal Ethernet CAT5 cable for the length you need  plug the cable in and done deal.