klatremis/esphome-for-growatt

Esphome component for Growatt inverters for Home Assistant

ESPhome for Growatt by Klatremis (still under development)

ESPhome configuration for monitoring and control of Growatt inverters in Home Assistant. This include all addresses i could see relevant from the inverter.

• For DIY generic esp32 hardware, use "esp32" and the wiring below
• For KlatremisHW, use "klatremishw" code

Supported devices

SPH inverters

• SPH3600 (confirmed)
• SPH10000TL3 (not confirmed)

MIC inverters

• (not confirmed)

MOD inverters

• (not confirmed)

MID inverters

• (not confirmed)

MAX inverters

• (not confirmed)

Requirements

• ESP32
• TTL To RS485 Module with automatic flow control
• or
• KlatremisHW Basic/Lilygo t-can 485, *For now, only danish customers: https://badenergy.dk/product-category/inverter/inverter-styring/

Installation

1. Create your esp32 in esphome in home assistant
2. Upload the your basis config via. usb from pc.
3. Test wireless upload
4. Copy all content (make sure you have your wifi ssid&password in the secrets)
5. Edit the sensors in the config if you like
6. Upload wireless

Wiring of generic esp32 & TTL module

RX / TX between esp and ttl converter may have to be swapped. This seems to be a little different from espboard to espboard. If it dosent communicate(RX/TX led both blinking) Try swap rx/tx on the esp.

esphome-for-growatt's Issues

no response

Hello, thank you very much for the project, it's exactly what I was looking for. I followed the instructions and soldered the ESP32 exactly as described, connecting it to the second available Modbus port of my Growatt inverter. However, I'm not receiving any data. Here is an excerpt from the log:

[15:23:23][D][modbus_controller:043]: Modbus command to device=1 register=0x405 countdown=0 no response received - removed from send queue
[15:23:25][D][modbus_controller:043]: Modbus command to device=1 register=0x40D countdown=0 no response received - removed from send queue
[15:23:25][D][sensor:094]: 'growatt PV Power': Sending state nan W with 0 decimals of accuracy
[15:23:26][D][modbus_controller:043]: Modbus command to device=1 register=0x410 countdown=0 no response received - removed from send queue
[15:23:27][D][modbus_controller:043]: Modbus command to device=1 register=0x416 countdown=0 no response received - removed from send queue
[15:23:28][W][modbus_controller:136]: Duplicate modbus command found: type=0x4 address=3 count=8
[15:23:28][W][modbus_controller:136]: Duplicate modbus command found: type=0x4 address=35 count=2
[15:23:29][D][modbus_controller:043]: Modbus command to device=1 register=0x41A countdown=0 no response received - removed from send queue
[15:23:30][D][modbus_controller:043]: Modbus command to device=1 register=0x41E countdown=0 no response received - removed from send queue
[15:23:31][D][modbus_controller:043]: Modbus command to device=1 register=0x422 countdown=0 no response received - removed from send queue
[15:23:33][D][modbus_controller:043]: Modbus command to device=1 register=0x426 countdown=0 no response received - removed from send queue
[15:23:33][D][sensor:094]: 'growatt PV Energy Total': Sending state nan kWh with 1 decimals of accuracy
[15:23:34][D][modbus_controller:043]: Modbus command to device=1 register=0x03 countdown=0 no response received - removed from send queue
[15:23:34][D][text_sensor:064]: 'growatt Status state': Sending state 'Unknown'
[15:23:35][D][modbus_controller:043]: Modbus command to device=1 register=0x23 countdown=0 no response received - removed from send queue
[15:23:37][D][modbus_controller:043]: Modbus command to device=1 register=0x3F1 countdown=0 no response received - removed from send queue
[15:23:38][D][modbus_controller:043]: Modbus command to device=1 register=0x3FD countdown=0 no response received - removed from send queue
[15:23:39][D][modbus_controller:043]: Modbus command to device=1 register=0x405 countdown=0 no response received - removed from send queue
[15:23:40][D][sensor:094]: 'growatt PV Power': Sending state nan W with 0 decimals of accuracy
[15:23:41][D][modbus_controller:043]: Modbus command to device=1 register=0x40D countdown=0 no response received - removed from send queue
[15:23:44][D][modbus_controller:043]: Modbus command to device=1 register=0x03 countdown=0 no response received - removed from send queue
[15:23:45][D][modbus_controller:043]: Modbus command to device=1 register=0x23 countdown=0 no response received - removed from send queue
[15:23:47][D][modbus_controller:043]: Modbus command to device=1 register=0x3F1 countdown=0 no response received - removed from send queue
[15:23:48][D][modbus_controller:043]: Modbus command to device=1 register=0x3FD countdown=0 no response received - removed from send queue
[15:23:49][D][modbus_controller:043]: Modbus command to device=1 register=0x405 countdown=0 no response received - removed from send queue
[15:23:51][D][modbus_controller:043]: Modbus command to device=1 register=0x40D countdown=0 no response received - removed from send queue
[15:23:55][D][sensor:094]: 'growatt PV Power': Sending state nan W with 0 decimals of accuracy

Can someone help me with this?