| Device Type | Modbus TCP (Ethernet) | RS485 | Curtailment |
|---|---|---|---|
| WH-TIA502 | ❌ | ✅ | ⚠️ |
| WH-TIA602 | |||
| WH-TIA802 | |||
| WH-TIA103 | |||
| WH-TIA123 | |||
| WH-TIA133 |
WHES 3 Phase Hybrid Inverter Protocol (RTU)The Sofar EMS communicates with this device over Modbus RTU on RS485. This device has no Modbus TCP interface, so an Ethernet connection cannot be used.
Run the communication cable directly from the VPP 485 port of the device to an RS485 port on the Sofar EMS.
| Device | Sofar EMS model OM1 | Sofar EMS model IG8 | RS485-USB converter | RS485-Ethernet converter |
|---|---|---|---|---|
| VPP_485A | RS485 A | RS485_POS | RS485 A | TX+ |
| VPP_485B | RS485 B | RS485_NEG | RS485 B | TX- |
| N/A | RS GND | GND | Not available | G |
The Sofar EMS supports only these serial settings for this device:
| Setting | Value |
|---|---|
| Protocol | Modbus RTU |
| Baud rate | 115200 |
| Parity | None |
| Data bits | 8 |
| Stop bits | 1 |
| Modbus address | 1 (default), 1 - 247 supported |
⚠️ Make sure the device Direct power control read-only mode is off. If it is on we can't send commands with the Sofar.