Growatt

The Teleport can connect to the Growatt inverters that support the Modbus protocol. Some old models, e.g. Growatt 5000 MTL, that do not have Modbus are not supported. You can connect with Modbus RTU using RS485 serial interface.

Supported models

• MIN TL-X/TL-XH/TL-AH (US) models
• MID, MAX & MAC TL3-X models
• MAX 1500V, MAX-X LV models
• MOD TL3-XH models
• MIX Storage models
• SPA Storage models
• SPH Storage models
• ShineWIFI/4G/Lan-X
• ShineMaster-X (slow response time)
• SEM-X (slow response time)

Unsupported models

• ShineMaster
• SEM/SEM-E/SEM-D
• ShineLink-X

Modbus RTU over RS485

1. Connect the serial cable between the serial port of the Teleport and the serial port of the Growatt inverter.

   Warning

   When connecting the RS485 wires to the terminals of the inverter and the Teleport, Growatt may not follow the industry standard of labeling the negative terminal as A and the positive terminal as B. Please consult the installation manual of the inverter or contact the OEM when the manual does not offer clear instructions. From experience, we have seen the following works:

   • D- of the Teleport connects to pin 4 of the inverter, Growatt calls this RS-485 B.
   • D+ of the Teleport connects to pin 3 of the inverter, Growatt calls this RS-485 A.

2. On the inverter’s LCD display, go to Settings, follow the inverter’s user manual to enter the password: 123, and then navigate to COM Address. In the case of a single inverter, verify the COM Address is 1. In the case of multiple inverters, please set each inverter to a different address and let us know these addresses.

3. Verify the following settings:

   • Baud rate: 9600
   • Parity bit: none
   • Data bit: 8
   • Stop bit: 1