question

Out of the box the BMS-Can is set to 500kbit/s if the Daly BMS uses 250kbit/s you have to change that setting.

Thanks for your answer. So I am happy when my Daly BMS will arrive and can be connectetd to the Multiplus II GX by 250 kbit/s.

I have a further question. The Daly BMS has a 5 pin connector as CAN port and the Victron has a RJ45 connector for the "BMS CAN". Do you know which pins need to be connected to which wire of an RJ45 cable? I assume I have to make a cable DIY and there is no existing cable?What I found is this connection diagram of the Daly BMS:

For CANBUS you need CAN-H, CAN-L and GND.
The 8P8C connector on the Victron side is Pin7 = CAN-H, Pin8 = CAN-L and Pin3 = GND

Thank you. This information was very helpfull. I found a good solution to connect the wire with a 8P8C port.

Hi, I have connected all the parts. LiFePo4 Cells, Daly BMS and the Multiplus II GX. The system ist working well but I cannot see the BMS in the Venus shell. I have connected the BMS CAN with the CAN-Port of the Daly BMS, set the 250kbit/s and obviously the CAN connection is running (RX and TX packages are counted). Due to the instruction an BMS device should appear in the device list with a menue in the remote console but there appears nothing. Do I need to add an Assistent in the VEConfig or what can be my mistake in the setup? Thanks for your great help.

Daly-BMS is not in the list of compatible BMS supported from Victron-Energy.
So even your electrical connection is correct, and the CAN-frames are transmitted, VenusOS will not do anything with the data received.
There is some DBUS (driver) (and DALY-BMS connected via R2-232/RS-484) from some private project to get it work, but not via CAN as far as I know

I found the private project of Louisvdw with the driver for the Venus OS, enabeling the Daly BMS communication with a RS 485 connection. https://github.com/Louisvdw/dbus-serialbattery/wiki/How-to-install by using a preconfigured USB-Boot Stick to update the Venus OS.

My question is now how to connect the recommended USB->RS485 cabel (original from victron), at the Multiplus II GX. The USB-Port at the Multiplus II is already connected with the EM24 Energymeter and the MultiplusII has only one USB Port availabel?

I know, it's a long time ago, but you have to use the VE.can port on your GX device, not the BMS.can.

Here is a video made by Daly:

https://www.youtube.com/watch?v=bUpBq6-WklY

So is the answer "yes" to the question: Does a Dali BMS work together wie a Victron GX device over CAN bus without additional software?

Just use a smartshunt.

I might have overlooked it, but it looks like the best kept secret in this topic, this interface board. I cracked the code finally and found just 1 (one) supplier on Aliexpress willing to sell it.

Yet it is more-or less standard in the 19" rack LiFePo batteries that are for sale all over the place.

You can buy it from https://nl.aliexpress.com/item/32875971231.html?spm=a2g0o.order_list.order_list_main.10.21ef79d2krCu7D&gatewayAdapt=glo2nld

But you have to send them a message stating for what device you want to use it before they ship it (spoiler: Victron :-)

I managed to get it working with Daly Smart BMS, Interface WNT board, Mutliplus II and VenusOS.

I wrote it up here in case it helps:

https://community.victronenergy.com/questions/195318/guide-for-daly-bms-can-communication-with-venus-os.html

I never got CAN bus working this way. But I did realise a working D-bus/RS485 connection, thanks to this:

https://louisvdw.github.io/dbus-serialbattery/

No interface print needed, works with the daly factory-supplied cables (Uart or rs485) IN usb port of the GX device.

Disclaimer: the "easy way", booting with a patch file on USB or SD did not work for me. Installing over SSH did.

I just had the a problem with a Daly 80A BMS. There was no possibility to swicht it to a Victron Cerbo on a MP2.
After contacting the Daly BMS Factory I had contact to a very friendly support. Peki Wei was helping me uncomplaining.
The problem was, that the BMS firmware wasn't for Victron Energy/CAN.
The LAN Cable pin 8=L (pin5 to CAN-BMS) and 7=H to pin4 of CAN-BMS was right.
It's not necessary to use GND!

After upgrading with a special upgrad for Victron with ext. CAN it was perfect working.

Tried to upload the firmware, doesn't work.
Wie kann ich ein File .S19 hochladen?

Did anyone work out a surefire way of connecting Daly to gx ?

Not sure if this helps.

Daly sent me this. My understanding is to control induvidual battery balancing via the seperate Daly App.