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ai-republic / bms-to-inverter

Use, monitor and control any battery brand with any inverter! Application to read and monitor data from BMSes and write data to an inverter using any protocol (e.g. UART, RS485, ModBus or CAN)
https://github.com/ai-republic/bms-to-inverter
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JK bms RS485 Modbus V1.0 issue #54

Open kovaroman opened 1 week ago

kovaroman commented 1 week ago

Hi, I have a JK B2A8S20P with a JK RS485 adapter (GPS UART port to RS485 port), it is working OK on windows with JK monitor app. I have configured on linux your configurator, tried to use ID 0 and 1, 115200 baud rate and 9600, my PC rs485 adapter is based on CH340 chip and starts on port /dev/ttyUSB0

On windows my JK protocol is set to JK BMS RS485 Modbus V1.0 and works well with JK monitor app, when I set this protocol and try to start your script (BMS type: JK_RS485, ID: 1, Port: /dev/ttyUSB0, Baudrate: 115200, Delay: 1000), it sends request and doesn't receive response.

here is part of log:

2024-09-03 10:26:44.916 | INFO  | Thread-10  | verter.BmsToInverter:268   | Reading BMS #1 JK_RS485 on /dev/ttyUSB0...
2024-09-03 10:26:44.917 | INFO  | Thread-10  | stoinverter.core.BMS:130   | ---------------------------------> Thread 28
2024-09-03 10:26:44.917 | DEBUG | Thread-10  | s485.JSerialCommPort:180   | Clearing RX buffers
2024-09-03 10:26:44.918 | DEBUG | Thread-10  | s485.JSerialCommPort:159   | Send: Buffer (HEX): [0x4E, 0x57, 0x00, 0x13, 0x00, 0x00, 0x00, 0x00, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x68, 0x00, 0x00, 0x01, 0x29]

2024-09-03 10:26:45.221 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 1 times!
2024-09-03 10:26:45.222 | DEBUG | Thread-10  | .JKBmsRS485Processor:186   | Waiting for messages to arrive....
2024-09-03 10:26:46.426 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 2 times!
2024-09-03 10:26:46.427 | DEBUG | Thread-10  | .JKBmsRS485Processor:186   | Waiting for messages to arrive....
2024-09-03 10:26:47.631 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 3 times!
2024-09-03 10:26:47.631 | DEBUG | Thread-10  | .JKBmsRS485Processor:186   | Waiting for messages to arrive....
2024-09-03 10:26:48.835 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 4 times!
2024-09-03 10:26:48.835 | DEBUG | Thread-10  | .JKBmsRS485Processor:186   | Waiting for messages to arrive....
2024-09-03 10:26:49.185 | INFO  | Thread-12  | verter.BmsToInverter:294   | Sending to inverter PYLON_RS485 on /dev/ttyUSB0...
2024-09-03 10:26:49.185 | DEBUG | Thread-12  | verter.core.Inverter:187   | No battery data yet received to send to inverter!
2024-09-03 10:26:50.038 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 5 times!
2024-09-03 10:26:50.039 | DEBUG | Thread-10  | .JKBmsRS485Processor:186   | Waiting for messages to arrive....
2024-09-03 10:26:51.243 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 6 times!
2024-09-03 10:26:51.243 | DEBUG | Thread-10  | .JKBmsRS485Processor:186   | Waiting for messages to arrive....
2024-09-03 10:26:52.448 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 7 times!
2024-09-03 10:26:52.449 | DEBUG | Thread-10  | .JKBmsRS485Processor:186   | Waiting for messages to arrive....
2024-09-03 10:26:53.653 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 8 times!
2024-09-03 10:26:53.653 | DEBUG | Thread-10  | .JKBmsRS485Processor:186   | Waiting for messages to arrive....
2024-09-03 10:26:54.189 | INFO  | Thread-12  | verter.BmsToInverter:294   | Sending to inverter PYLON_RS485 on /dev/ttyUSB0...
2024-09-03 10:26:54.190 | DEBUG | Thread-12  | verter.core.Inverter:187   | No battery data yet received to send to inverter!
2024-09-03 10:26:54.858 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 9 times!
2024-09-03 10:26:54.858 | DEBUG | Thread-10  | .JKBmsRS485Processor:186   | Waiting for messages to arrive....
2024-09-03 10:26:56.062 | DEBUG | Thread-10  | .JKBmsRS485Processor:176   | No bytes received: 10 times!
2024-09-03 10:26:56.063 | ERROR | Thread-10  | .JKBmsRS485Processor:199   | Error sending frame: Buffer (HEX): [0x4E, 0x57, 0x00, 0x13, 0x00, 0x00, 0x00, 0x00, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x68, 0x00, 0x00, 0x01, 0x29]

2024-09-03 10:26:56.063 | INFO  | Thread-10  | verter.BmsToInverter:320   | 
BMS SOC   V       A      CellMinV    CellMaxV   CellDiff

2024-09-03 10:26:56.063 | INFO  | Thread-10  | verter.BmsToInverter:390   | BMS alarms: 
    NONE

I tried different config combinations, tried to changed UART protocol on BMS to (9600) JK BMS RS485 Modbus V1.0 and set Baudrate 9600 in configurator, nothing changed. Does your script support JK BMS RS485 Modbus V1.0 protocol on RS485?

ai-republic commented 1 week ago

Have you tried

cat /dev/ttyUSB0

and see if data is coming? If your JK is a Modbus version, then the _JKRS485 BMS binding will not work. It is for pure RS485 not for Modbus RTU protocol specification. If you can provide the JK Modbus RTU specification then I can create a binding for that :)

kovaroman commented 1 week ago

https://github.com/Louisvdw/dbus-serialbattery/discussions/969#discussioncomment-8668592 - here are some info about JK BMS RS485 Modbus V1.0

https://github.com/Louisvdw/dbus-serialbattery/files/14483776/BMS.RS485.Modbus.V1.0.pdf - original https://github.com/Louisvdw/dbus-serialbattery/files/14483784/Jikong.BMS.RS485.Modbus.universal.protocol.V1.0.pdf - translated

Thanks)