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

Paulfrench35 said:
I used this diagram ...

View attachment 185666

There is a big problem in your software, for it to work I have to use RS485 port ????

View attachment 185667

View attachment 185668
Click to expand...
I i explained before on JkBms GPS port is UART TTL signal at 115200 kbps

If connect direct RX TX GND to Serial 1 or serial 2 of esp32 will work.
In my schematics Serial 2 is connected to RS485 adaptor that why in software is named RS485

Hardware Connection:

IkBMS UART TTL <-> JkBMS RS485 adaptor< -> MAX 485 < -> ESP32 UART TTL

is same with

JKBMS UART TTL <-> ESP32 UART TTL

when u use serial direct u have RX TX GND line

when use rs485 adaptor u have only A B line

The problem with gnd connection is when u have 2 jkbms on same interface , if one of ur interface will block charge discharge will cut gnd connection, but gnd will be same on serial connection .
 
besher said:
hi @mrconstantin
Is it possible to work with Voltronic inverter?
Click to expand...
voltronic dont support can port, maybe they work on rs485 i dont know.

All invertors migrate to can bms support, on mpp solar / easun / other chinaese copy they start to have can support after last update

MPP Solar Inc » PIP-MAX SERIES

www.mppsolar.com www.mppsolar.com

i have rs485 from seplos and pylon protocol is same but i dont tested.
 
This is the next generation interface DIY B4I

1 - Serial port used for extender
2 - Rs485 ports
2 - Can ports
1 - Digital output for contactor.

Hv Protocols will be on this setup.

20240112_210204.jpg
 
Sven77PV said:
[...], but with esp32-can-iot I found, that my Balancers (JK-DZ08B2A24S-CAN) are communicating at 500Kbps, while MrConstantin uses them at 250Kbps.
Click to expand...
Just to report my mistake:
I obviously ran into a known issue, where the internal SJA1000 of ESP32 is running at half speed only.
So I only "thought" to be able to communicate at 500Kbps, but now I verified with a Logic Analyzer, that it is running at 250Kbps with the 500Kbps setting!

Still, I wonder why my inverter sends some messages at that speed - but will investigate this later...
 
Would this work to get a Topband BMS to talk to Growatt SPA3000? If so would definitely pick up a kit!

I have a spare ESP32 here but it's one of the M5Stack canbus kits. I've got it to flash, might try to see if works with batt, could I have an app key?

ID: 9ddad4d4​

 
terribleocotpus said:
Would this work to get a Topband BMS to talk to Growatt SPA3000? If so would definitely pick up a kit!

I have a spare ESP32 here but it's one of the M5Stack canbus kits. I've got it to flash, might try to see if works with batt, could I have an app key?

ID: 9ddad4d4​

Click to expand...
Hi, i dont have the Topband bms protocol for input of data. First u need to ask for and pdf file with the comm protocol.
 
mrconstantin said:
Hi, i dont have the Topband bms protocol for input of data. First u need to ask for and pdf file with the comm protocol.
Click to expand...
It emulates various different protocols, Victron/Kodak/Sol-Ark/Solis/Goodwe/Luxpower/Growatt (supposedly - think the SPH supports Pylontech but not the SPA).

I suspect it's the Growatt SPA's protocol support that's the problem. Thanks though.
 
terribleocotpus said:
It emulates various different protocols, Victron/Kodak/Sol-Ark/Solis/Goodwe/Luxpower/Growatt (supposedly - think the SPH supports Pylontech but not the SPA).

I suspect it's the Growatt SPA's protocol support that's the problem. Thanks though.
Click to expand...
So topband emulate growatt but not work?
 
Hello @mrconstantin
Can you support SRNE ASF48100U200-H Hybrid all in one inverter, I just flash the ESP 32 and I can not connect to BLE to JKBMS. my Chip is ID7467b4fc , can you please send me a app key?
 
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...
Hi,

looks nice currently have succeeded with another project but single battery

would this work for Solis 3kw hybrid inverter so i can connect 2 batteries through JK2A24s15P bms in parallel?

second question - would this work with the SP2000 Growatt controller?


regards
 
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