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CAN and RS485 BMS Interface with multiple emulated Inverter protocols for JkBms Jbd BMS Daly 123Smart

ee99rsp said:
Looking for some help getting this up and running on my system. I have tried to connect with my JBD BMS on the NODEMCU serial (pins TXD, RXD), and Growatt LV on RS485 (D16, D17). On the web interface for JkBMS it says disconnected on both connections (see screen shot, and there is no actiity on the JBD BMS LED) so I am not sure if I have connected to the correct serial ports on NodeMCU chip. I am using the code JK_BMS_BLE_SERIAL_V4.2.partitions @0x8000, JK_BMS_BLE_SERIAL_V4.2.bootloader @0x1000
JK_BMS_BLE_SERIAL_V4.3 @0x10000.

JkBMS v2.0.15-rc.1 ; Arduino 2.0.9 ; Build Date Sep 11 2023 22:28:48

View attachment 199710

I read in a post about connection on serial 1 & 2, but the chip only has a hardware serial 0 and 1 (serial 2 is only TX) which is a bit confusing. Does it have SoftwareSerial on some other pins for JBD?

I have linked out the JDB on both SERIAL0 & SERIAL1 swapping the connection in case I had TX and RX the wrong way and it still does not work. I also tried the same on the JST connector from the original wiring diagram on pins D21 & D22, but it didn't work either.
Same goes for pins D19&D18 which seemed to be wired out to a terminal block on the wiring diagram, again didn't work.

I know the JBD port works as I have a butchered some arduino code to convert the JBD serial to pylontech CAN and I can use the serial monitor on Arduino software to see the values as text.

I also tried the blue tooth connection setting with the JBD BMS too but it does not connect on that either, for blue tooth do I need a seperate BT module connected to the NodeMCU or does it use the onboard one?

Thanks
Click to expand...
I think nodemcu have other pin then Esp32 DevKit 1 can u see if map pin is same?
 
QBear said:
checked with SRNE, they said I can use UZE if the battery support PLY protocol. now the battery and the inverter can communicate directly. thanks for your amazing work.
Click to expand...
Can u put what is the inverter model that u confirm is working with pylon.
 
For HV protocols , i upload new DIYB4I v1 with more easy debug function . For testing the protocol just use fake battery data.
Log 1.jpg

Also all ports can be tested for trafic / also the can msg comms

Log.jpg
 
mrconstantin said:
Hi,

I will present my DIY CAN BMS emulator project , I work from some time to make this interface for integration of DIY battery with different brands of invertors with supported CAN or RS485 communication.

Interface use an esp32 with one or tow CAN ports and RS485 support, can handle multiple JK as inputs for data, and also cand handle LV or HV.

I use in this project all the data i can find online, i know am not the first on this road if u have documents of other BMS protocols u can share it with me.

If u want u can support my work to add more protocols to this project and buy the hardware components kit from my ebay or fallow on Patreon!

Hardware:

Esp32 DevKit 1
CAN : SN65HVD230
RS485: Max485
DC-DC: XL7015
RJ45 Breakout
Optional: Indicator LEDs

View attachment 156678

View attachment 156679
Connectivity:

WIFI Web Portal with Cell Info Data on local IP

View attachment 156673
View attachment 156676


Input BMS supported:

View attachment 156674
JK BMS - TTL, BT , CAN
JBD BMS - BT connection
Daly - work in progress


Protocol Emulated:
View attachment 156675
General BMS LV
Document V1.4 - 07.09.2020
CAN: 500Kbps
Transmission Cycle: 1s
Data Mode: Little Endian

Pylonthech LV
Document V1.2 - 08.04.2018
CAN: 500Kbps
Transmission Cycle: 1s
Data Mode: Little Endian

Seplos LV
Document V1.0 - 08.04.2018
CAN: 500Kbps
Transmission Cycle: 1s
Data Mode: Little Endian

LG Resu LV
Document
CAN: 500Kbps
Transmission Cycle: 1s
Data Mode: Little Endian

Growatt LV
Document V1.04 22,02,2019
CAN: 500Kbps
Transmission Cycle: 1s
Data Mode: Big Endian

SMA LV
Document V1.0 - 07.09.2020
CAN: 500Kbps
Transmission Cycle: 1s
Data Mode: Little Endian

Li LV
Document V1.0 06.01.2020
CAN: 500Kbps
Transmission Cycle: 1s
Data Mode: Little Endian


Victron Nemea200
Document V1.0 06.01.2020
CAN: 250Kbps
Transmission Cycle: 1s
Data Mode: Little Endian


Pylon HV
Document V1.18 30.05.2019
CAN: 500Kbps
Transmission Cycle: 1s
Data Mode: Little Endian


GoodWee HV
Document V1.3 31.03.2021
CAN: 250Kbps
Transmission Cycle: 1s
Data Mode: Little Endian

BYD HV
Document
CAN: 500Kbps
Transmission Cycle: 1s
Data Mode: Little Endian

Pylontec RS485
Document V2.0 15.10.2019
RS485: 9600bps MODUBUS ASCII
Transmission Cycle: 0.5s Timeout
Data Mode: Little Endian

Seplos RS485
Document V3.3 21.08.2018
RS485: 9600bps MODUBUS ASCII
Transmission Cycle: 0.5s Timeout
Inverter Replay:
Data Mode: Little Endian

Growatt RS485
Document V2.02 24.07.2019
RS485: 9600bps MODUBUS ASCII
Transmission Cycle: 0.5s Timeout
Data Mode: Little Endian

BYD RS485
Document
RS485: 9600bps MODUBUS RTU
Transmission Cycle: 1s Timeout
Data Mode: Little Endian

Inverter Tested LV

Victron: Gx Family - General LV have the most information displayed, this is an combination of more registry i find.
Growatt SPF 5000 ES - Pylon LV, Seplos LV, Li LV
Growatt SPH 5000 TL - Pylon Lv, Seplos LV, Li LV, Growatt LV
Solis S5-EH1P6k - Semplos LV, LI LV
Deye SUN12K-SG04 - Pylon LV, LI LV

Inverter Tested HV

Fronius Primo 6.0 Gen24 - BYD HV
SunGrow SH10RT - BYD HV
GoodWE GW10K - GoodWee HV, Pylon HV
ThinkPower S100TL - Pylon HV


MultiPack:

If u have 2 packs with 2 JkBms u can combine data by connected 1 to Serial Port and one on BT Port
If u have more then 2 u need to use more interfaces. The Rs485 will be use to communicate between interfaces and Master CAN port will rapport to bms.


Know Issue:

1 - When u use BT connection u can not connect with the phone app to the JkBMS.
U need to stop the interface power and after connect and make settings with ur phone app.

2 - Pylontech LV - if u use this protocol some inverter limit max charge voltage under 54V for 15S LFP battery.
Use Seplos LV or LI LV protocol is same as pylon with few data changed.

3 - From RS485 Protocols i tested only Fronius Gen24, The Pylon RS485 LV and Semplos RS485 LV are write from documentation for PC App -> Battery communication protocol.

Warranties:

The project is under develop NO WARRANTIES are provided ! USE on ur own RISK!

Software:

In this moment GitHub Repo under construction!

Download & Install:

U can download the bin file from my Google Drive Link and write it on ESP32.
For first install u need to be done with cable an pc, after that u can update the firmware OTA.
i will provide new update as soon i can!

JkBMSCan - Google Drive​


drive.google.com

Support my Work:

If u like this project and want to support my work to add more protocols u can invest ur time and also if u can spare some $ will be great too!

Invest Time:

Test the interface on ur inverter and confirm what protocols are compatible to increase invertor compatibility list.
Provide documentation or data communication logs from ur Inverter and OEM battery for reverse engineering new protocols.
Share data if u all ready make some progress on reverse engineering new protocols.

Invest $:

Donate by PayPal and U will receive tech support for ur project : paypal.me/diyenergy
Fallow on Patreon for last updates.
Buy components kit from my ebay for ur projects.

Documentation:

I share my protocols documentation folder if u want to make ur own software.
if u have any other document of interest share it also with me.

JkBMSCan - Google Drive​


drive.google.com

Other Projects :

WifiManager https://github.com/tzapu/WiFiManager
TeslaBMS https://github.com/collin80/TeslaBMS
JKEnuPylon https://github.com/botaneta/JKbms_Emu_Pylon
JKBmsToPylonCAN https://github.com/ArminJo/JK-BMSToPylontechCAN
VictronLibCan https://github.com/jmibk/BMS-LIB-CAN-Victron


Implementation of this interface on battery:

LV 14S 180A Li from Kona with JKBms 150A and Can interface

View attachment 160382

HV 23S / module 60A from Kona with JK Activ Balancer and Can interface

View attachment 160383

JK - Victron

View attachment 160384

JK - Growatt

View attachment 160385

JK - Sungrow

ONLY 10 Pics for post SORRY!

IF U WANT TECH SUPPORT JUST WRITE TO ME, OR WHATUP!
Click to expand...
Can your driver be adapted to run in Venus OS (on Raspberry Pi 4B) to interrogate inverter/charger from Aims Power and display this info in the AC In/Out information on the Venus OS display interface? I have TTL Communications protocol document from Aims that describes the messaging (Query and Response) and formatting of content. It would interrogate the Aims device using the RJ45 cable connector cable from the Aims inverter that normally connects to an Aims display. Attaching that document from Aims.
 

Attachments

  • PICO TTL #1.pdf
    236.3 KB · Views: 6
@TedH I guess, this would be the wrong approach.
The TTL protocol seems to be "monitoring only" and reading your post this is also the only thing you want to do: get information to display it in VenusOS. The project here is used to communicate bi-directional between an inverter/charger and an (unsupported) BMS.

But it should by quite easy to integrate foreign measurements into VenusOS, I guess you posted the same question on Victron Community and already got some answers there. ;)
 
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