DevicesEnergy meterSolis
Solis Grid-Tied Energy Meters
Supported Devices
| Device Type | Modbus TCP (Ethernet) | RS485 |
|---|---|---|
| Solis Grid-Tie Meter (via Inverter/EPM) | ✅ | ✅ |
| Autarco Grid-Tie Meter (via Inverter/EPM) |
Connection
Ethernet
For correct ethernet wiring: Follow the the guidelines for ethernet wiring.
RS485
Connect the RS485 wires to the communication port of the Solis device (Inverter or Export Power Manager).
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 | SmartgridOne Controller model OM1 | SmartgridOne Controller model IG8 | RS485-USB converter | RS485-Ethernet converter |
|---|---|---|---|---|
| A | RS485 A | RS485_POS | RS485 A | TX+ |
| B | RS485 B | RS485_NEG | RS485 B | TX- |
| GND (optional) | RS GND | GND | Not available | G |
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 SmartgridOne Controller will find them faster!
- For each device, it is generally recommended to stick with the factory default baud rate, parity, and stop bits. The SmartgridOne Controller will scan on those first.
Ensure the device is configured with the following Modbus settings to match the driver specifications:
- Baudrate: 9600
- Data bits: 8
- Stop bits: 1
- Parity: None
- Modbus Address: 1 (default) - Range: 1 to 254