BYD Sungrow Can Bus Summary.txt

This is the summary of information found and
 research done on the BYD HVM Battery and Sungrow SH5.0RS Inverter.

Datalog of BYD HVM8.3 to SH5.0RS CAN BUS Communication.

Created DBC file to read values from datalog files.

Summary of Communications:
Bit-Rate 500,000
8 byte data
		Polling Message ofID 0x00004200 02 00 00 00 00 00 00 00 
On startup Inverter sends message ID 0x151 00 53 55 4e 47 52 4f 57 .SUNGROW ASC11
				     0x151 01 00 00 00 00 00 00 00
		     BYD reply is ID 0x250 03 14 00 33 00 53 03 09 ...3.S..
				     0x290 0c 66 25 9a 00 00 00 00 .f%.....
                                     0x2d0 00 42 59 44 00 00 00 00 .BYD....
                                     0x3d0 00 42 61 74 74 65 72 79 .Battery
				     0x3d0 01 2d 42 6f 78 20 50 72 .-Box Pr
				     0x3d0 02 65 6d 69 75 6d 20 48 .emium H
				     0x3d0 03 56 4d 00 00 00 00 00 .VM.....	

This link documents the start up of the BYD HVS.
https://github.com/SunshadeCorp/can-service/blob/master/can_byd_sim.py
Note: ID 0x250 and 0x290 are unknown data at this time.

This link documents the BYD startup.
https://github.com/dalathegreat/BYD-Battery-Emulator-For-Gen24/blob/main/Software/BYD-CAN.cpp

This link documents the BYD messages:
https://github.com/SunshadeCorp/can-service/blob/master/config.yaml 

battery
├─ 0x1d0 2: current {positive = charge, negative = discharge}
├─ 0x210 0: max_cell_temp
├─ 0x210 2:min_cell_temp
├─ 0x150 0: soc
├─ 0x150 2: soh
├─ 0x1d0 4:temp
└─ 0x1d0 0:voltage
inverter
├─ 0x091 0: battery_voltage (read only)
├─ 0x0d1 0: soc (read only)
└─ 0x111 0-4: timestamp (read only)
battery limits 0x110
├─ 6: max_charge_current
├─ 4: max_discharge_current
├─ 0: max_voltage
└─ 2: min_voltage