MENNEKES AMTRON® Compact 2.0s & Start 2.0s
Monitors and controls MENNEKES AMTRON Compact 2.0s and Start 2.0s EV charging stations via Modbus RTU.
Template for the MENNEKES AMTRON Compact 2.0s and Start 2.0s EV charging stations via Modbus RTU. Reads voltage, current, power, temperature, session energy, and EVSE state. Controls charging current, charging release, solar charging mode, and dynamic phase switching.
- Protocol
- Modbus RTU
- Connection
- RS485, 57600 baud
- Registers
- 48, read and write
- Brand
- MENNEKES
- Key readings
- Voltage L1 to L3 · Current L1 to L3 · Power L1 to L3 and Overall · EVSE State · Charged Energy Session and Total · Temperature
- Available commands
- Charging Current Energy Manager · Charging Release · Solar Charging Mode · Requested Phases
- Compatible models
- AMTRON Compact 2.0s 7.4 C2 · AMTRON Compact 2.0s 11 C2 · AMTRON Compact 2.0s 22 C2 · AMTRON Start 2.0s
- Last updated
Registers (48)
47 read, 6 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| 53_Voltage L1 | V | Read | |||
| 54_Voltage L2 | V | Read | |||
| 55_Voltage L3 | V | Read | |||
| 50_Current L1 | A | Read | |||
| 52_Current L3 | A | Read | |||
| 51_Current L2 | A | Read | |||
| 56_Power L1 | W | Read | |||
| 57_Power L2 | W | Read | |||
| 58_Power L3 | W | Read | |||
| 59_Power Overall | W | Read | |||
| 10_EVSE State | Read | ||||
| 71_Charged Energy Session | kWh | Read | |||
| 72_Duration Session | s | Read | |||
| 01_Modbus Version | Read | ||||
| 04_HW Version | Read | ||||
| 05_Product ID | Read | ||||
| 11_Authorization Status | Read | ||||
| 12_Downgrade | Read | ||||
| 13_Phase Rotation | Read | ||||
| 30_Downgrade Current | A | Read | |||
| 31_Charging Current Energy Manager | A | Read and write | |||
| 32_Max Current House (DIP) | A | Read | |||
| 33_Max Current EVSE | A | Read | |||
| 34_Phase Options Solar | Read | ||||
| 70_Max Current Session | A | Read | |||
| 82_Cable Lock | Read | ||||
| 83_Solar Charging Mode | Read and write | ||||
| 84_Requested Phases | Read and write | ||||
| 85_Charging Release | Read and write | ||||
| 86_Lock EVSE | Read and write | ||||
| 90_Active Error Code | Read | ||||
| 18_CP State | Read | ||||
| 36_Phase Mode HW | Read | ||||
| 37_Cable Lock | Read | ||||
| 38_Master Lost Fallback Current | Read | ||||
| 39_Grid Inbalance | Read | ||||
| 40_Grid Inbalance Threshold | A | Read | |||
| 41_Grid Phases Connected | Read | ||||
| 42_Authorization | Read | ||||
| 44_Phase Switching Pause | s | Read | |||
| 43_Sunshine+ Current | A | Read | |||
| 60_Temperature | °C | Read | |||
| 73_Detected EV Phases | count | Read | |||
| 91_Master Lost Fallback State | Read | ||||
| 92_Switched Phases | Read | ||||
| 100_Charged Energy Total | kWh | Read | |||
| 101_Charging Sessions Total | count | Read | |||
| 80_Heartbeat 0x55AA | Write |
Loading registers…
Send your device list
If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Monitor real-time EV charging power and session energy on a cloud dashboard for each customer site.
- Create an alert when EVSE state indicates a fault or when wallbox temperature exceeds safe limits.
- Control charging current remotely to implement solar surplus charging without on-site visits.
- Log total charged energy per wallbox to generate monthly consumption reports for fleet or tenant billing.
- Enable dynamic phase switching on the 11 kW model to maximize self-consumption from a rooftop PV system.
- Set charging release to prevent or allow charging based on time-of-use tariff schedules.
Installation
Connect the Modbus RTU wiring (A and B terminals) from the ModbusCloud gateway to the RS-485 port on the MENNEKES AMTRON wallbox.
Set DIP switches 4, 5, and 7 of bank S1 to ON on the wallbox and restart it to enable solar-controlled Modbus satellite mode.
Verify or adjust the wallbox Modbus address (default 50), baud rate (57600), data bits (8), and stop bits (2) using the MENNEKES configuration tool.
Configure the ModbusCloud gateway serial port to match: 57600 baud, 8 data bits, 2 stop bits, and the correct Modbus RTU slave address.
Import the MENNEKES AMTRON Compact 2.0s and Start 2.0s template from the ModbusCloud template library and assign it to the gateway.
If using the 11 kW model with dynamic phase switching, activate this option in the MENNEKES configuration tool before commissioning.
Things to watch for
The wallbox stops responding to Modbus commands after a few seconds. What is wrong?
The wallbox requires a heartbeat write (value 0x55AA to register 3328) at least every 10 seconds. If the heartbeat is missing or delayed, the wallbox ignores external commands. ModbusCloud writes registers at most once per minute, so it cannot keep up this heartbeat. Controlling this wallbox through ModbusCloud is therefore not possible, while reading its values works.
Which baud rate and serial settings should I use?
The factory default is 57600 baud, 8 data bits, and 2 stop bits. From firmware v2.0 onward these can be changed with the MENNEKES configuration tool. The gateway must match exactly.
Dynamic phase switching does not work on my 11 kW wallbox. Why?
This feature must be explicitly activated using the MENNEKES configuration cable and configuration tool before it can be controlled via Modbus. It is only available on the AMTRON Compact 2.0s 11 C2 model.
What firmware version does the wallbox need?
Wallbox firmware v2.0 (released March 2024) or later is required. MENNEKES recommends updating to the current v2.2 release using the configuration cable and tool.
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