Supported Devices
info
The UE Series supports both RS485 (Serial) and Modbus TCP (via Ethernet dongle). Ensure you select the correct connection mode in the controller.
Wiring
RS485 (10000 - 20000 UE)
The 10000-20000 UE series uses a specialized circular waterproof connector for RS485 communication. You must disassemble this connector to wire it.
Pin Definition: Inside the circular connector, the pins are numbered 1 and 2.
RS485 Wiring
- For correct RS485 wiring: Follow the guidelines for RS485 wiring.
- If the wiring shown in the table below is incorrect, please let us know.
- There is no general consensus in the industry about the usage of A and B for the RS485 polarity, so it may be counterintuitive and opposite of what you might expect for some devices.
| Device | DemoBrandName ControllerDemoName model OM1 | DemoBrandName ControllerDemoName model IG8 | RS485-USB converter | RS485-Ethernet converter |
|---|---|---|---|---|
| Pin 1 (RS485 A) | RS485 A | RS485_POS | RS485 A | TX+ |
| Pin 2 (RS485 B) | RS485 B | RS485_NEG | RS485 B | TX- |
| N/A | RS GND | GND | Not available | G |
Note: Consult the manual if your model uses a different connector type.
RS485 (4000 - 6000 UE)
For the smaller UE models, the connection is typically via the terminal block or DB9 port. Please verify with the specific manual linked above.
Configuration
NOTE: RS485 Device Addresses
- You MUST give each device on the RS485 bus a unique address. Check the manual of the device on how to do this.
- Use lower addresses first (1, 2, ...) because the DemoBrandName ControllerDemoName will find them faster!
- For each device, it is generally recommended to stick with the factory default baud rate, parity, and stop bits. The DemoBrandName ControllerDemoName will scan on those first.
To change the Modbus address on the Growatt UE LCD display:
- Double tap the front button/screen to enter the menu.
- Navigate to Settings -> Set COM Address.
- Select Set Manual.
- Single tap to increment the number.
- Double tap to confirm ("Set Addr OK!").