| Device Type | Variants | Modbus TCP (Ethernet) | RS485 | Curtailment | Minimum device firmware version |
|---|---|---|---|---|---|
| BluE-S (1st Gen) Single-Phase | BluE-S 3680D/5000D/6000D-M1 | ❌ | ✅ | ✅ | ARM v2.7.08 or higher |
| BluE-S (1st Gen) Three-Phase | E4KT/E5KT/E6KT/E8KT/E10KT/E12KT | ARM v1.5.00 or higher |
Official KSTAR documentation confirms that Modbus TCP (Ethernet) is not supported for third-party control on these devices. We recommend connecting the KSTAR battery and the EMS using RS485.
The Sofar EMS and the KSTAR inverters communicate via RS485.
Connect the EMS to the CT/METER Port using an RS-485 cable.
Connect the EMS to the METER/DRY Port (specifically the CT/METER pins).
To ensure the EMS can control the inverter, the following settings must be configured on the inverter via the Screen or App.
For VPP control to function reliably, you must configure the following:
The following modes have higher priority than remote control and must be Disabled:
Ensure the communication port is set correctly:
Restart the battery inverter after changing the settings.
Because the battery goes into sleep mode at 10% SoC, we recommend setting the minimum state of charge level to at least 12%. When the battery goes into sleep mode, it cannot be controlled by the Sofar EMS.