Setup.

I have a Multiplus II connected to a Lynx distributor. On the distributor are three MPPTs and soon, one Orion DC-DC charger. I have a 712 battery monitor connected to the shunt. The MPPTs are daisy chained to the Cerbo GX CAN. The Multiplus is connected to the Cerbo via VE Bus. I plan on connecting a resistance LP tank monitor to tank 1 input. Finally, I am installing a 709-N2K to monitor the water and waste tanks.

Problem.

The CAN Bus is terminated on both ends. However, that leaves no space for the N2K. Is there a way to make a hub for extra CAN units? Is a VE.direct connection between the MPPTs and the Cerbo the work-around to daisy chaining the MPPTs on the CAN network?

I have recently installed 8 x Pylontech RT12100G31 as a single 800ah 12v battery bank. The batteries are working (charging and discharging) and are interlinked for balancing. They show up correctly as a single bank in the Pylontech bluetooth app.

However, I have not been able to get the batteries to communicate with the CCGX. The CCGX is on the latest firmware (v2.92) and I have have a victron terminator in the other VE.Can port.

There is very limited information about these batteries online and unfortunately the instruction manual is very limited. I have used the following links for reference:

https://www.victronenergy.com/live/battery_compatibility:can-bus_bms-cable

https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom

I have wired the comms cable using the type B Pinout in the first link above as this matches the batteries instruction manual as below. I have tested the wires in the cables pin to pin to confirm continuity and correct pin matching. This has proven correct ... multiple times. I have also removed the VE-Can terminator and confirmed it has continuity and resistance of 120 ohms between Pins 7 & 8.

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The table above shows Pin 7/8 being for RS485A /B. I have not wired this as it does not seem to map to any wire in the Victron VE CAN-bus RJ45 terminator and I know others with working integration between the same pylontech batteries and a Cerbo without this wired.

The documentation suggests that once correctly connected, configuration will occur automatically, but I have also tried manually turning on DVCC and configuring the VE CAN-Bus profile. I have tried all available profiles without success although I believe the correct one should be Can-bus BMS (500kbit/s).

Has anyone succesfully connected these batteries to a CCGX and can advise on what I could have wrong? Alternatively, perhaps someone with experience in connecting a BMS to CCGX can help?

Hello Together,

I'm trying since a week or so to connect my MultiPlus-II GX wthy my BMS, which is an Daly 16s 48V 250A BMS. It has communication interface (RS485/CAN) and I set it with the PC-Monitor Software to VICTRONENERGY/CAN. I have also the Daly Interface Board (WNT) that they set to Victron Protocol, as they said, before they send it to me.

This is how my Setup looks like:

[image]

I also created an customized RJ45 Cable for VE.CAN so they communicate together correctly:
--------------------------------------------------------------------------------------
VE.CAN Side <-> DALY INTERFACE BOARD SIDE
Green/white GND 3 - 3 GND green/white
Brown CAN-L 8 - 4 CAN-L blue
Brown/white CAN-H 7 - 5 CAN-H blue/white
--------------------------------------------------------------------------------------

Then I set in the Remote Console the VE.CAN to Other BMS and 500 kbit/s, in the Network status the packets are counting up correctly:

[image]

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But there is no BMS in the device list or the battery monitor list:

[image]

This is how I set up the BMS:

[image]

There is an video on youtube where they demonstrate that it is possible:
https://www.youtube.com/watch?v=bUpBq6-WklY

Has anyone managed to connect an Daly BMS to Victron via CAN? What do I need to do to get it work?

Here is the Datasheet of the Daly Interface Board (WNT):
DL-WNT-V1.0 datasheet of collection board.docx.pdf

Greetings Jack

Hello all,

I made below a scribbled plan to my system.

The 2 right mppt's on ve.direct and the pylontech batteries with their bms connected om ve.can were working for some time without problems. Pylontech bms connected to ve.can was installed without any terminators, either on gx or the battery and it worked fine.

However, needs arrised for a 3'rd mppt. I can t connect it on ve.direct, since i have only 2 ports. Simple connection on the free ve.can port did nothing, so i figured out i need terminators. But where should i put them? On mppt only, or on mppt and on the pylontech battery? Wich one, first, or last?

Thank you!

[image]

Hi everyone!

I would like to know if anyone has installed AMASSTORE low-voltage lithium batteries, which belong to SofarSolar, both the GTX 2500 and GTX 5000 models. And, if so, tell us about your experience as well as the recommended configuration (VE.Configure and DVCC).

This battery model has CAN communication. We have tested the communication with the Cerbo GX and it is detected. The manufacturer does not have supporting documentation and I have not found information in the community.

If anyone has tried it, I would like to hear about your experience.

A pleasure to share your knowledge!

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It took me some time to find out what was the problem, which I did, so not really a question, but for future advice I put it here.

I have had some issues with my Pylontech battery that kept disconnecting from the Multiplus 2 GX showing "Not connected". Sometimes it happened 5 times in 1 minute, really annoying. Now I did notice there were high voltage warnings, but I seen them before. Then there was no problem because it gave overvoltage warning already from 52V (15 cells). The real problem started later with the intermitting disconnecting from the MP2. First I thought it was an CANbus problem, but I found out the BMS was shutting down the charge or discharge even when the voltage was at a normal level. It needed a hard reset (with the BMS reset button) to get it out of this loop. Afterwards change parameters for high and low voltage and thats it

I have my own computer (with cellular connectivity) which sits on the VE.can bus and communicates with a Cerbo GX. The Cerbo GX communicates with a MultiPlus-ii.

I want to be able to set the power of AC-IN1 (e.g. -400W) on the MultiPlus-ii by sending commands on VE.can to the Cerbo GX . I have found how to set the Current Limit and Device Mode.
https://www.victronenergy.com/upload/documents/VE.Can-registers-public.pdf?fbclid=IwAR1-Go6i--_o9tmi1a2HbiKqLzmbE4-X7Ryd1inbUG-Tj5ARHF8VK--MY50

I have also found this information
https://www.victronenergy.com/live/ess:ess_mode_2_and_3?fbclid=IwAR0OKG8z5zgraGRhIbcp4FYZf97ui6oicwqXC_C6HDsf14y3sftUnHMePMg

which says "The 'VE.Bus to VE.Can interface' does not support reading and writing the ESS/grid-parallel setpoint." Does the "ESS/grid-parallel setpoint" refer to the power of AC-IN1 or does it refer to something else? I.e. is it not possible to directly set the target power via VE.can? If not, is there any work around?

Thanks!

Setup.

I have a Multiplus II connected to a Lynx distributor. On the distributor are three MPPTs and soon, one Orion DC-DC charger. I have a 712 battery monitor connected to the shunt. The MPPTs are daisy chained to the Cerbo GX CAN. The Multiplus is connected to the Cerbo via VE Bus. I plan on connecting a resistance LP tank monitor to tank 1 input. Finally, I am installing a 709-N2K to monitor the water and waste tanks.

Problem.

The CAN Bus is terminated on both ends. However, that leaves no space for the N2K. Is there a way to make a hub for extra CAN units? Is a VE.direct connection between the MPPTs and the Cerbo the work-around to daisy chaining the MPPTs on the CAN network?

Hi All

I have a "pylontech" (reality unbranded but shows up correctly in cerbogx CANBUS). connected to cerbogx

also multi RS connected to the VE.CAN on cerbo gx.

Cerbo GX shows correct battery state of charge.

but
however, the Multi-RS still shows the incorrect "state of charge" for the pylontech battery in its own "victron connect connection".

how do I rectify?

VeCAN.JPGConsole_02.JPGConsole_02.JPGVeCAN.JPGMy CarboGX is connected with SmartSolar over VeCAN. Cerbo gets CAN errors sporadically (about once a day). After that, the interface to the MPPT tracker is in CAN Active state (receives packets but does not send any). The MPTT Tracker then reacts with Error 67 (BMS Connection lost). After reboot everything works again. I replaced the cable and terminator. The error keeps coming. Can someone help with an idea? A solution is also welcome as I can reset the error without rebooting.

Hi.

I currently have two REC A-BMS connected to the same Cerbo.

One BMS is ID 2 and other is ID 4 in RS485 network, so far so good.

But when I connect them both to CAN-BUS there seems to be some conflict.

I tried separating them, one on VE.CAN input (250kbps), the other on BMS-CAN (500 kbps).

They both show up as separate batteries in device list on the touch screen, but with same VRM instance.

In VRM there is only one battery where one "overturns" the other if it is connected or not.

The multiplus gets confused, and this also brings other errors on my NMEA200 network like autopilot droping out. So the way it is now, I have to leave one disconnected, or turn of NMES2000 output from cerbo.

I believe the problem is they both ID themselves with same name/ID on CAN bus.

Any idea on how to solve this?

I have read thru the manual and don't see how to ID/NAME them different on CAN bus.

Hi,
I would like to connect two MPPTs to a Multiplus II GX. Unfortunately there is only one VE.Direct and no VE.Can port on it.
However there is an additional JST-PH connector on the GX PCB with a label "VE.Direct" (please see the photos).
Can I connect an MPPT directly to this additional port?

Thanks for your answer!

[image]

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I am planning a system around the Cerbo GX that includes:

• Victron Lithium batteries
• VE.Bus BMS
• Victron SmartShunt

I would like to interface with the Wakespeed WS500 alternator regulator that accepts VE.Can data to adjust charge rates/voltages.

Does the CerboGX VE.Can port output battery parameters (charge voltage, current limitation, battery current, etc)? Or does the CerboGX only listen on the VE.Can ports?

Hello,

TLD;R - I would like for a piece of mind and health of a LiFePO batteries implement a charging strategy similar to e.g. Tesla cars: Charge only to specified SoC, let's say 80%.

My current setup includes:

• LiFePO bank monitored and controlled by REC BMS,
• Lynx Shunt 1000A VE.Can shunt
• SmartSolar Charger VE.Can 150/70
• and Cerbo GX

among other components.

In current setup, if I understand it correctly, REC BMS is periodically sending a frames on CAN Bus
advertising current SOC (among other things), and effectively controls MPPT to slow charging
when SOC reaches 98% and stop charging when SOC is equal 100%. This is a behavior
I can observe on both Cerbo GX and VRM portal.

I would like to stop charging at 80%, both for extending battery life, and for pice of mind,
that when boat is unattended, some fluke in SOC calculation would make MPPT overcharge
batteries. Is it possible?

Thanks,
Przemek
S/V Festina Lente

Bonjour,

J'ai branché mon multiplus 2 avec un cerbo GX et des batteries polyantech. La tension batteries est de 50V, les batteries sont chargées a 100%, pourtant le multiplus détecte un problème tension batteries trop faible.

Si quelqu'un à une idée pour corriger le problème de je suis preneur