Jk BMS to Solplanet Inverter

[Lino34s]

Hey man! Kudos for this amazing project.
Is there any chance on getting my new Nissan leaf battery pack with jk bms to communicate with my asw3680 hybrid inverter via rs485

I guess the inverter doesn't have Can because I had it linked flawlessly with my pylonteck bank via rs485 and I just can't find any reference on the product manual either

[ai-republic]

Hi,
yes, I'm going to start implementing the RS485 PylonTech protocol this weeking, so if you use your JK BMS and your inverter can communicate via the Pylon RS485 protocol then it should be no problem.

[ai-republic]

Sorry, didn't get round to it this weekend, but I see what I can do until next :)

[Lino34s]

Hey Torsten, I guess I figured out my Solplanet inverter also supports CAN communication. Do you think I’ll be able to get them to communicate? Because JK BMS also emulate pylonteck, for example, and I didn’t get Thank you very much, Diogo Lino

[ai-republic]

So your JK does CAN and also the inverter right? And both 'speak' the PylonTech communication specification?

[Lino34s]

Yes they do, because first, until a couple months ago, I had my Solplanet inverter fully integrated with a 5kwh pylonteck bank (via rs485). I just did a 18kwh powerwall with jk BMS from my old Nissan leaf that I want to upgrade

[ai-republic]

In that case, yes my application can communicate with both your BMS(es) and inverter :)

[Lino34s]

I would like to take this opportunity to include the document with the communication protocol for my Solplanet ASW3680H-S2 Inverter

MB001_ASW GEN-Modbus-en_V2.1.5.pdf

[ai-republic]

Thanks for the communication specification. As your Solplanet inverter supports the PylonTech RS485 protocol I would recommend to use this. I'm still implementing the binding but hope to finish it this weekend

[Lino34s]

Perfect!

I'm also waiting for the rs485 Can Hat for RaspPi to come in the next few days. I guess I might need some little help on the assembly

Thanks a lot man

[ai-republic]

@Lino34s the Pylon RS485 binding is now implemented. Please get the new Configurator , choose PYLON_RS485 in the inverter tab and do a Clean install.
Please also configure the debug log-level so that I can check if there are any prolems.
Happy testing ;)

[Lino34s]

Can you please provide me with an image of the BMS/CAN Hat/Inverter setup, including the respective cabling and connections?

[ai-republic]

Hi @Lino34s,
this is different for each BMS, CAN hat and inverter depending on your model. But in the manuals you should find the corresponding plugs and PIN layout for the connections. Then you just need to connect CAN H to CAN H and CAN L to CAN L with the correct pins.
In general like this:

[Lino34s]

Sorry. Is that the 1CH or 2CH CAN HAT? I just bought the 1xCH one since I thought of using CAN on the BMS side and rs485 on the inverter side. Am I correct?
I am currently preparing the cable connections. If I understand correctly, the BMS connection is made on the pins, and the inverter connection is made on that green SP3485 interface chip from de right. Only those 4x cables from your scheme are used right?

[ai-republic]

It would be a 1CH CAN/RS485 hat similar to this https://www.waveshare.com/rs485-can-hat.htm

[Lino34s]

Getting these logs when trying to read BMS data

[ai-republic]

Hmm, looks like you specified a CAN port for a RS_485 binding. Could you attach your config.properties file here please?

[Lino34s]

###################################################################

System specific settings

###################################################################

###################################################################

BMS settings

###################################################################

Simple single port configuration

bms.pollIntervall - is the interval to request BMS data (in seconds)

bms.x.type - can be (DALY_CAN, DALY_RS485, JK_CAN, PYLON_CAN or SEPLOS_CAN

bms.x.portLocator - is the locator/device to use to communicate to the BMS, eg. can0, /dev/ttyUSB0, com3, etc.

bms.x.baudRate - is the locator/device baudrate to use to communicate to the BMS, eg. 9600, 500000, etc.

bms.x.delayAfterNoBytes - is the delay after receiving no data (in ms)

bms.pollInterval=1

bms.1.type=JK_CAN
bms.1.id=1
bms.1.portLocator=can0
bms.1.baudRate=500000
bms.1.delayAfterNoBytes=200

###################################################################

Inverter settings

###################################################################

The inverter type can be NONE, DEYE_CAN, GROWATT_CAN, SMA_SI_CAN, SOLARK_CAN

inverter.type=PYLON_RS485

The port name/device to use to communicate to the inverter

inverter.portLocator=can0

The port baud rate to use to communicate to the inverter

inverter.baudRate=9600

Interval to send data to the inverter (in seconds)

inverter.sendInterval=1

###################################################################

Optional services settings

###################################################################

[ai-republic]

Ah, you have the JK on can0 and also the BMS which is a Pylon RS485. The Pylon should be on a port like /dev/ttyXXX