which cable for BMS to Solar Assitant

[StupidFlanders]

I want to connect my battery to Solar Assistant for better monitoring as the inverter values seem to be all over the place. The batteries are made by GSL Energy, but I don't have a manual for them. Does any one know which cable I need?


Pierre from Solar Assistant said that I first need to figure out the RS232 or RS485 port pinout.

 

[Zivva]

Looks like they use a Seplos BMS. Not yet supported by Solar Assistant. Should be soon I guess as BMS protocol is well documented enough ...

Your inverter looks like a Deye, right ?

Should communicate perfectly with a Seplos (protocol 0, CAN)

 

[XO4001]

As Zivva said lets hope it comes soon to see the seplos in SA.
It looks like your dip switches are not set correct see attached file for settings.

 

[Zivva]

Looks like Seplos is already supported

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Good to hear you enjoy our software. We already support the Seplos BMS. Have you tried the "USB to Serial" protocol in SolarAssistant?

Kind regards
Pierre

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As for the RS485 pin out for Seplos, pins 1 & 2 or 8 & 7 to connect to the USB adapter ...

 

[Zivva]

Confirmed, pin 1 & 2 work

 

[XO4001]

Confirmed, pin 1 & 2 wor

Did you connect the RS485 from the battery to the PI?
Which adapter did you used?

 

[Zivva]

Did you connect the RS485 from the battery to the PI?
Which adapter did you used?

Yes, RS485 port of the battery (standard RJ45 cable on this side) & pins 1 & 2 to the USB converter (FTDI)

 

[XO4001]

Yes, RS485 port of the battery (standard RJ45 cable on this side) & pins 1 & 2 to the USB converter (FTDI)

Thanks,
Do you have the CAN connected to your inverter also and connected to the PI?
I have more than 1 batterie so only the last RS485 port is available because of the interconnect with the RS485 cables.
How many batteries do you have connected?

 

[Zivva]

Yes I also have CAN communication between the battery & inverter + inverter connected to the PI with a second RS485 to USB FTDI converter.

Pierre from SA told me he was not sure I could use both CAN & RS485 at the same time but it works.

I have only 1 battery (Rosen 200ah) on this setup but I'm also building another setup with 3 Narada racks and I already tried communication on SA. It works flawlessly. You just have to daisy chain the RS485 port of each battery then connect the 1st one to the PI. Just pay attention to set the dip switch address of each battery on the correct order : battery 1 (connected to the PI) = 1, battery 2 = 2, etc ...

 

[XO4001]

Yes I also

OK thanks will order another converter and give it a try.

 

[duunoit]

Just FYI, I bought the rs485 adapter from Amazon and used the serial <-> rj45 cable that came with the LV6548. Red in the B, White in the A.

 

[duunoit]

https://www.amazon.com/gp/aw/d/B00NKAJGZM

 

[duyvietstar]

I have the same problem as you but don't know how to fix it