ccorderor / huawei-sun2000-modbus-mqtt Goto Github PK

Hi everyone,

I was using this library for a while, it served me well, but I recently decided that I wanted more data from my inverter inside node-red and to log it to an influx db, and this python script didn't expose what I wanted so I took the plunge and created a nodered flow that uses ModBus directly, no additional docker image or python script to maintain separately.

here's the nodered flow code:

huawei-solar-modbus.json

here's a screenshot:

• you can use this as an interim solution if you want to transition your existing setups that use the emon/* topics.
• the script only posts to MQTT topics the same data that I was previously using from this script, you might want additional data, but see the script for examples on how to do it.
• you can use this script as a starting point to extract information from the inverter into your nodered flows without using mqtt at all, e.g. by linking your existing mqtt inputs directly to the outputs of the 'change' nodes that extract the information from the modbus messages.
• I've not fully polished this flow, there may be typos, errors etc, but if you're interested you'll probably find it useful as-is.

an example 'process device status' output message payload looks like this:

{"state_1":[{"bits":[0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0],"bit0":0,"bit1":1,"bit2":1,"bit3":0,"bit4":0,"bit5":0,"bit6":0,"bit7":0,"bit8":0,"bit9":0,"bit10":0,"bit11":0,"bit12":0,"bit13":0,"bit14":0,"bit15":0}],"state_2":[{"bits":[1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0],"bit0":1,"bit1":0,"bit2":1,"bit3":0,"bit4":0,"bit5":0,"bit6":0,"bit7":0,"bit8":0,"bit9":0,"bit10":0,"bit11":0,"bit12":0,"bit13":0,"bit14":0,"bit15":0}],"state_3":0,"alarm_1":[{"bits":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"bit0":0,"bit1":0,"bit2":0,"bit3":0,"bit4":0,"bit5":0,"bit6":0,"bit7":0,"bit8":0,"bit9":0,"bit10":0,"bit11":0,"bit12":0,"bit13":0,"bit14":0,"bit15":0}],"alarm_2":[{"bits":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"bit0":0,"bit1":0,"bit2":0,"bit3":0,"bit4":0,"bit5":0,"bit6":0,"bit7":0,"bit8":0,"bit9":0,"bit10":0,"bit11":0,"bit12":0,"bit13":0,"bit14":0,"bit15":0}],"alarm_3":[{"bits":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"bit0":0,"bit1":0,"bit2":0,"bit3":0,"bit4":0,"bit5":0,"bit6":0,"bit7":0,"bit8":0,"bit9":0,"bit10":0,"bit11":0,"bit12":0,"bit13":0,"bit14":0,"bit15":0}],"pv1_voltage_v":0,"pv1_current_a":0,"pv2_voltage_v":0,"pv2_current_a":0,"input_power_kw":0,"power_grid_voltage_c":234.5,"power_grid_curent_a":0,"peak_active_power_today_kw":5.22,"active_power_kw":0.679,"reactive_power_kw":0,"power_factor_kvar":1,"grid_hz":49.92,"efficiency_percent":100,"internal_temperature_c":29.400000000000002,"insulation_resistance_mohms":3,"device_status":512,"fault_code":0,"startup_time_s":1710921425,"shutdown_time_s":4294967295,"accumulated_energy_yield_kwh":1979.654,"daily_energy_yield_kwh":1.605,"running_status":2,"charge_discharge_w":-731,"bus_voltage_v":438.70000000000005,"battery_soc_percent":92,"working_mode":0.4,"rated_charge_power_w":500,"rated_discharge_power_w":500,"fault_id":0,"current_day_charge_capacity_kwh":8.97,"current_day_discharge_capacity_kwh":6.99,"bus_current":-1.7000000000000002,"battery_temperature_c":36.7,"remaining_time_m":0,"dcdc_version":"","bms_version":"","maximum_charge_power_w":5000,"maximum_discharge_power_w":500,"serial_number":"BT21804169","total_charge_kwh":5583.35,"total_discharge_kwh":5447.14,"device_status_message":"On-Grid"}

Here's what a simple graph in InfuxDB looks like using the above:

Note that on my inverter's dongle firmware it's not possible to have 2 programs connected to the modbus on tcp port 502. i.e. both the python script from this project running at the same time as the NodeRed modbus 'server' instance, thus you can only use either this projects python code, or this nodered flow.

Hope this is useful to someone.

Hi there,

Trying to get this working. I also have a SUN2000-5KTL-L1. I have a vanilla RPI4 with Rabian OS Lite. I've installed your docker image and changed the config as my Sun2000 IP is 192.168.200.1:6607 (port 502 isn't used in the latest firmware).

When I try run the app I get the following error:
sudo docker run huawei-solar Traceback (most recent call last): File "huaweisolar.py", line 2, in <module> from huawei_solar import HuaweiSolar File "/usr/local/lib/python3.8/site-packages/huawei_solar/__init__.py", line 6, in <module> from .bridge import HuaweiSolarBridge # noqa File "/usr/local/lib/python3.8/site-packages/huawei_solar/bridge.py", line 15, in <module> from huawei_solar.huawei_solar import AsyncHuaweiSolar, Result File "/usr/local/lib/python3.8/site-packages/huawei_solar/huawei_solar.py", line 35, in <module> from .registers import REGISTERS, RegisterDefinition File "/usr/local/lib/python3.8/site-packages/huawei_solar/registers.py", line 216, in <module> class TimeOfUseRegisters(RegisterDefinition): File "/usr/local/lib/python3.8/site-packages/huawei_solar/registers.py", line 228, in TimeOfUseRegisters ) -> list[LG_RESU_TimeOfUsePeriod]: TypeError: 'type' object is not subscriptable

Any ideas or things I could troubleshoot?