Currently, the integration is support upto a state of charge limit to 95%. This is because when the state of charge goes beyond 95%, the battery can stop listening to setpoints due to the actions of the battery management system. We are working on resolving this issue with Dyness and other partners.
| Device Type | Variants | Modbus TCP (Ethernet) | RS485 | Curtailment |
|---|---|---|---|---|
| EC100 | 100kWh | ✅ | ✅ | ✅ |
| DH100F | 71~100kWh | |||
| DH200F | 100kW/215kWh | |||
| DH200Y | 100kW/232kWh | |||
| LS | ||||
| HT-A | ||||
| DH800Y | ❌ |
| Model family | Modbus TCP port | RS485 settings | Modbus address range |
|---|---|---|---|
| LS and HT-A | 502 | 9600 baud, 8N1 | 1–247 |
| DH800Y | 502 | 115200 baud, 8N1 | 1–99 |
LS and HT-A are separate choices in the device wizard. Select the model installed on site rather than using a DH100F profile.
The DH800Y connection requires controller software that includes it and is currently available in the testing software line. Its presence on this page does not mean every installed controller already offers it.
DH800Y supports a battery AC power setpoint and battery-cluster, state-of-charge, energy and alarm readings. A PV power reading does not provide separate PV curtailment: that command is not available through this integration.
Before controlling a DH800Y, open its HMI or web interface and set Control mode → Remote mode. The controller does not enable this setting automatically.
The Sunlight Group EMS and the Dyness inverters communicate via RS485 or Ethernet.
For correct ethernet wiring: Follow the the guidelines for ethernet wiring.
The COM6 wiring example below belongs to the cabinet-style connection. Do not reuse it as an LS or HT-A terminal diagram; use the RS485 terminal markings in the manual for that model.
| Device | Sunlight Group EMS model OM1 | Sunlight Group EMS model IG8 | RS485-USB converter | RS485-Ethernet converter |
|---|---|---|---|---|
| COM6 terminal 1A | RS485 A | RS485_POS | RS485 A | TX+ |
| Com6 terminal 1B | RS485 B | RS485_NEG | RS485 B | TX- |
| N/A | RS GND | GND | Not available | G |
The Dyness DH100F needs to be set to remote mode: