Hi, I have installed 3 batteries and I have a cerbo GX. This cerbo gx has 2 can BMS connections. Luckily there was another topic complaining about the cerbo GX not connecting to the BMS anymore. So I checked if there was a BMS connection on my system. apperently not. There are no additional devices…

Also take a look at this topic: [image] Basen-Green 15KWh battery connection to Cerbo-GX fails DIY Hi, I have an question you might know the answer to slight_smile I have an Basen-Green 15KWh battery. I want it to connect to the Cerbo-GX. When I connect the Battery to t…

You need to connect all batteries together on a busbar, and feed all multiplus from there Also your batterys should be connected in parallel. With one as master and connected to can on cerbo, other batterys connected to that master as slave, see your battery manual for that

[image] Mark: connected the BMS CAN of the battery to 1 of the 2 CAN BMS connections of the cerbo GX. I have a normal network cable to make this connection. Be careful that many BMS manufacturers have proprietary cable/pinout connections. I have not seeing one until now that is using Victro…

Maybe that’s the case. I will check the connections. I have a basen green battery housing with eve cells. DIY case for 48V 300ah Active balance Battery Pack+enclosure accessories › Basengreen Energy I will check the connections. I am a hardware design engineer, so I have to do these steps: Check …

For Cerbo, the pinout of the BMS-CAN port is: pin3 - GND pin7 - CAN-H pin8 - CAN-L

Thanks. That saves me some time.

Thanks again. That topic helps me a lot. I see a TIA568B cross over cable could do the trick, but the ground will not be connected. pin 7 battery GND is connected to pin 4 cerbo GX. Probably best to make a custom cable. I hate to make a cable that only works if you connect connector A to the cerbo a…

By the way. In the previous topic someone asked how you can change the battery capacity in the BMS. Since you can connect 280Ah batteries into the battery housing, but you can also connect 314Ah batteries into the housing. This is how you can change that. You have to download the software from the b…

I made the right cables and connected the CAN BMS to the Basen green BMS. Set the CAN protocol to Pylon. I understood that the port is only 500kbits/sec and Pylon is 500kbits/sec. I have a system with 3 batteries and a 3phase system with multiplus II 5000. So I changed every battery to CAN Pylon. Co…

CAN communication is a daisy chain communication, not a star communication ! Meaning all batteries communication are in series and only the master battery is connected to Cerbo BMS-CAN port. Something like in the picture below, external device being Cerbo. It’s a picture with a different type of …

That was my first answer to his question :blush:

No BMS CAN connection with Cerbo GX

DIY

alexpescaru (Alex Pescaru) 13 January 2025 15:59 8

Also take a look at this topic:

Topic		Replies	Views
Basen-Green 15KWh battery connection to Cerbo-GX fails DIY beginner , basengreen	13	2199	22 September 2024
Cerbo GX BMS CAN Deutschsprachiger Bereich	15	1351	4 November 2024
Combining 4 or more LiFePO4 batteries BMS data to Cerbo GX DIY diy , offgrid , pv_inverter , vrm , bms , 3-phase	20	3134	15 December 2025
Missing battery information DIY beginner , domestic , vrm , multiplus-ii , cerbo_gx	16	441	5 March 2025
Connect DIY BMS via CAN to Cerbo GX - Eigenes BMS via CAN mit Cerbo GX verbinden DIY diy , bms , cerbo_gx	10	335	2 July 2025

No BMS CAN connection with Cerbo GX

Related topics