Hello,
I am trying to get Waveshare Modbus Ethernet (B) to communicate with the inverter as in https://github.com/nathanmarlor/foxess_ ... TH-%28B%29.
Firmware details are: Master 1.33 - Slave 1.02 - Comm 1.49
From the browser I can reach the device but it Home Assistant gives the error "Details: Modbus Error: [Input/Output] Modbus Error: [Invalid Message] No response received, expected at least 8 bytes (0 received)" when connecting with ip 192.168.1.113, port 502 and slave id 247.
I have reset WaveShare and reconfigured it. Still Home Assistant gives the same error. Only thing I haven't done is to upgrade firmware on Waveshare.
When I follow the instructions with either *86.bin or *90.bin with the following instructions:
You will first need to upgrade the "Code file" (aka BIN file). Select the "Code file download mode" radio button, this will enable the related subsection, select the bin file using the "..." button on the right (you can download it from here) and press Download button at the bottom. ...
VirCom say 'Flash write fail'.
Any help is much appreciated.
Thank you.
Check your physical connections, if the act led is permanently on then you need to swap the RS485 polarity at one end. Also check you are using the correct terminals at the inverter (pins 3/4 on the 'meter/ct/rs485' connector)
The Waveshare firmware version you have works for me and your config looks ok.
The Waveshare firmware version you have works for me and your config looks ok.
H1-3.7-E-G2, EP11-H and 6Kw solar
55.5N 3.7W
55.5N 3.7W
Hello friends,
Thank you all for your kind advice. I managed to get it to work. This is how I did it in case it helps anybody else.
The wiring on page 24 in UK-H1AC1-G2 User Manual.pdf pin numbers 1 to 5 go from right to left. However, in the connector itself, pins are numbered 1 to 5 from left to right. The manual needs to be amended!
Once I saw that, I wired the pins 3 and 4 counting from left to right and it worked.
Thank you all for your kind time to assist me.
Bless you
Thank you all for your kind advice. I managed to get it to work. This is how I did it in case it helps anybody else.
The wiring on page 24 in UK-H1AC1-G2 User Manual.pdf pin numbers 1 to 5 go from right to left. However, in the connector itself, pins are numbered 1 to 5 from left to right. The manual needs to be amended!
Once I saw that, I wired the pins 3 and 4 counting from left to right and it worked.
Thank you all for your kind time to assist me.
Bless you
Attachments:
- pins.pdf
- (127.41 KiB) Downloaded 2 times
Glad you got it working.
As you found, the manual unhelpfully shows the PIN numbers from the front of the connector rather than the cable entry side - at least the pin numbers are marked on the connector itself.
As you found, the manual unhelpfully shows the PIN numbers from the front of the connector rather than the cable entry side - at least the pin numbers are marked on the connector itself.
H1-3.7-E-G2, EP11-H and 6Kw solar
55.5N 3.7W
55.5N 3.7W
Yes, thank you.
I have a grid tied inverter which is connected to H1 inverter with a CT clamp. The Fox app shows the grid tied inverter values but does not hold them. Generations from both systems are used to charge the batteries. Please see the images. 8kwh of power has gone into the batteries today 9th.
Dave kindly advised me to get Home Assistant and Modbus installed which I did. While I get live Fox generation details in Home Assistant dashboard, I don't see the generation values of the grid tied inverter, and the aggregate; i.e. daily grid tied generated values.
The dashboard only report FoxESS values in the moving map i.e. 3.14kwh. While grid tied inverter value of 8.21kwh is not accounted for and is not displayed.
What am I doing wrong? How can I get this displayed, and preferably get both inverter generated values in one place please?
Many thanks
I have a grid tied inverter which is connected to H1 inverter with a CT clamp. The Fox app shows the grid tied inverter values but does not hold them. Generations from both systems are used to charge the batteries. Please see the images. 8kwh of power has gone into the batteries today 9th.
Dave kindly advised me to get Home Assistant and Modbus installed which I did. While I get live Fox generation details in Home Assistant dashboard, I don't see the generation values of the grid tied inverter, and the aggregate; i.e. daily grid tied generated values.
The dashboard only report FoxESS values in the moving map i.e. 3.14kwh. While grid tied inverter value of 8.21kwh is not accounted for and is not displayed.
What am I doing wrong? How can I get this displayed, and preferably get both inverter generated values in one place please?
Many thanks
Attachments:
- Screenshot 2025-10-09 at 15.50.46.png (10.96 KiB) Viewed 55 times
You will need to enable CT2 Meter in the integration (it's disabled as default), to do that in HA go to Settings, Devices & Services, find Foxess - Modbus and click '1 device', at the bottom of that list it will say +xx disabled entities. Click on that, find CT2 Meter, click on it and click the cog in the top right hand side if the dialogue box, scroll down until you see Enabled and make sure it is switched 'on', then click update and it will be added to your other sensors after 30 seconds.
That will provide you with the power 'kW' being supplied via CT2 (your other generator), but what you want is the energy 'kWh' and to do that you will have to pass it through an integral (riemann sum). The easiest way to do that is click Devices & Services, click at the top 'Helpers' , click '+ Create Helper', scroll down and click Integral sensor and give it a name, 'Grid tied inverter sum', metric prefix is 'k' for kilo, time unit is hour, in the input sensor box type CT2 Meter and select the entity it shows, integration method is 'Left', precision is 3 and click 'Submit' at the bottom. Give it an hour while it starts to collect statistics and you should find a new sum sensor with the name you gave it that shows the energy in kWh arriving through CT2.
That will provide you with the power 'kW' being supplied via CT2 (your other generator), but what you want is the energy 'kWh' and to do that you will have to pass it through an integral (riemann sum). The easiest way to do that is click Devices & Services, click at the top 'Helpers' , click '+ Create Helper', scroll down and click Integral sensor and give it a name, 'Grid tied inverter sum', metric prefix is 'k' for kilo, time unit is hour, in the input sensor box type CT2 Meter and select the entity it shows, integration method is 'Left', precision is 3 and click 'Submit' at the bottom. Give it an hour while it starts to collect statistics and you should find a new sum sensor with the name you gave it that shows the energy in kWh arriving through CT2.