Hi All; Very new to Victron. I have a Cerbo GX Mark 2 on order and I have some Humsienk Server Rack batteries. I want to use interconnect the batteries to the the Cerbo on the Canbus ports. I was told I need “VE.Can to CAN-bus BMS Type B cable”. I looked around and I found both the A cable and B ca…

Mystery solved. The manual is correct. I had to hack a “type B” cable with no ground. Thank you for the help!

Skip the ground and use can h and can l only If you plug it together and the bit rate (250 or 500) is correct it should announce itself and appear on the device list if it follows the correct addresses for victron as to where it sends its information Because it is mot on the official compatible li…

Thank You. The bit rate is 500 according to the manual. So the procedure is Make the cable. Skip ground. Set the bit rate on the Cerbo to 500 Set the protocol on Cerbo to PYLON Cross your fingers and it should work. :thinking:

[image] Dan: Set the protocol on Cerbo to PYLON I have never had to set any protocol on the GX for the battery except the bit rate. Thr battery announces itself if it talks.

Thanks again. This thread seems to be a similar BMS. I will read it through and go from there: [image] No BMS CAN connection with Cerbo GX DIY Hi, I have installed 3 batteries and I have a cerbo GX. This cerbo gx has 2 can BMS connections. Luckily there was a…

Yeah many manufacturers use pylontec base for thei bms. I guess we will have to wait and see how you get one with your experiements The other option is to contact the battery manufacturer and ask them if it is possible and how.

I already have a conversation running with them too. They suspect a “Type B” cable. But won’t say for sure until I give them specific information about the batteries. This I find distressing because this implies that there are more than one BMS out in the wild. :face_exhaling:

If you look carefully the only difference between type a and b is the ground. So if you skip the ground you eliminate having to try 2 cables. Assuming the bms uses the usual can position of 4&5 on the cable (some other brands use others)

I got a funny response from Humsienk: Based on this BMS/communication version, this battery uses a standard RJ45 CAN communication connection and normally does NOT require the Victron Type B adapter cable. In most cases, you can simply use: * a normal 8-pin RJ45 Ethernet/network cable directly…

So the “protocol” is probably 500kb/s, is it the only setting you change on the GX for Pylontecs And in theory no special cable is needed just a straight one? Technically nothing will blow up if you plug it together and see. It just it will either work or not.

Most likely Pylon Tech. 500 KBs is in the document. They say straight. But the docs supplied say otherwise. I have asked for clarification but they are shipping hardware with old documentation is not good. I will try straight through and see.

Humsienk Server Rack Batteries connecting with Canbus to cerbo gx mk2

Modifications

DanT (Dan) 14 May 2026 14:21 5

Thanks again. This thread seems to be a similar BMS. I will read it through and go from there:

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Humsienk Server Rack Batteries connecting with Canbus to cerbo gx mk2

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