KSE Wallbox
Controls and monitors an 11kW 3-phase EV wallbox charger via RS485
This template connects a KSE Wallbox 11kW 3-phase EV charger to ModbusCloud via Modbus RTU over RS485. It reads voltage, current, power, energy, and vehicle state registers, and allows control of maximum charging current, LED brightness, and relay mode.
- Protocol
- Modbus RTU
- Connection
- RS485, 9600 baud
- Registers
- 24, read and write
- Brand
- KSE
- Key readings
- Voltage P1 to P3 · Current P1 to P3 · Actual power · Loaded energy · Vehicle state · Error and safety flags
- Available commands
- Set max current · LED brightness · Modbus relay mode
- Compatible models
- KSE Wallbox
- Last updated
Registers (24)
21 read, 3 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| voltageP1 | V | Read | |||
| voltageP2 | V | Read | |||
| currentP1 | mA | Read | |||
| voltageP3 | V | Read | |||
| currentP2 | mA | Read | |||
| currentP3 | mA | Read | |||
| currentLoadedEnergy | Wh | Read | |||
| actualPower | W | Read | |||
| maxCurrent | A | Read | |||
| vehicleState | Read | ||||
| absoluteMaxCurrent | A | Read | |||
| firmwareVersion | Read | ||||
| TouchError | Read | ||||
| overtemperature | Read | ||||
| RCD AC Error | Read | ||||
| RCD DC Error | Read | ||||
| Relais 1 Drive Error | Read | ||||
| Relais 2 Drive Error | Read | ||||
| Relais 1 Welding Detection | Read | ||||
| Relais 2 Welding Detection | Read | ||||
| modbusChargeMode | Read | ||||
| setMaxCurrent | A | Write | |||
| ledBrightness | Write | ||||
| modbusRelayMode | Write |
Loading registers…
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Use cases
- Monitor per-phase voltage, current, and total power of each KSE Wallbox on a live cloud dashboard.
- Set the maximum charging current remotely to balance load across multiple EV chargers on site.
- Create an alert when an error or safety flag register indicates a fault condition on the wallbox.
- Track total loaded energy per charger to generate usage reports for billing or energy audits.
- Monitor vehicle state to confirm when a vehicle is connected, charging, or fully charged.
- Adjust LED brightness of the wallbox remotely for nighttime or branding requirements.
Installation
Connect the RS485 A and B lines from the KSE Wallbox to the RS485 port on your ModbusCloud Gateway.
Configure the serial port on the gateway to 9600 baud, odd parity, matching the wallbox default settings.
Assign a unique Modbus slave address on the KSE Wallbox, especially when daisy-chaining multiple units on one RS485 bus.
Import the KSE Wallbox template from the ModbusCloud template library and assign it to the correct gateway and slave address.
Verify communication by checking live register values in the ModbusCloud dashboard, confirming that voltage and current readings appear correctly.
If current values appear in milliamps, confirm that the scaling factor in the template converts them to amps for correct display.
Things to watch for
Current readings seem extremely high. What is wrong?
The KSE Wallbox reports current values in milliamps (mA). Ensure the template scaling divides by 1000 to display values in amps. Check the register scaling configuration in ModbusCloud.
I cannot communicate with the wallbox over RS485. What should I check?
Verify that the baud rate is set to 9600 and parity is set to odd on the gateway. Also confirm correct wiring of the A and B RS485 lines and that the Modbus slave address matches on both the wallbox and the template.
Can I connect multiple KSE Wallboxes to one gateway?
Yes. Assign each wallbox a unique Modbus slave address and daisy-chain them on the RS485 bus. Up to 16 units are supported by the manufacturer for load management. Create a separate template instance in ModbusCloud for each unit.
Is it safe to change the max charging current remotely?
The wallbox accepts current setpoints between 6 A and 16 A. Values outside this range may be rejected by the device. Always verify the electrical installation can support the configured current before adjusting remotely.
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