Alphatec Wallbox

Use cases

• Monitor EVSE status and charging current on a live dashboard for each customer site.
• Enable or disable the Alphatec charging station remotely to support maintenance or billing workflows.
• Set the charging current in amps from the cloud to implement basic load management.
• Create an alert when the EVSE status indicates a fault or unexpected offline state.
• Track installed amps across multiple Alphatec wallboxes in a fleet overview.

Installation

1. 1Connect the Modbus RTU wiring (A and B terminals) from the Alphatec wallbox to your ModbusCloud gateway (MCG or MLP series).
2. 2Verify that the Alphatec charger is set to a baud rate of 9600 and note its configured Modbus slave address.
3. 3Configure the serial port on the ModbusCloud gateway to match the baud rate (9600) and set the correct parity and stop bit settings as specified in the Alphatec datasheet.
4. 4Import the Alphatec Wallbox template in the ModbusCloud platform and assign the correct Modbus slave address.
5. 5Test the connection by reading the EVSE status and installed amps values from the ModbusCloud dashboard.
6. 6If you need registers beyond those in this template, consult the official Alphatec datasheet and add custom registers in ModbusCloud.

Things to watch for

01

The gateway cannot communicate with the Alphatec wallbox. What should I check?

Verify that the RS-485 A and B wires are not swapped. Confirm the baud rate is set to 9600 on both the gateway and the charger. Check that the Modbus slave address configured in the template matches the address set on the wallbox.

02

Can I use this template for both the AW1eM and the AL2eM?

Yes. The template is compatible with both the AC Wallbox Mini (AW1eM) and the AC Charging Station Twin (AL2eM). The core Modbus register set is the same for both models.

03

Are there more registers available than what this template provides?

Yes. The template covers the most common readings and controls. Additional registers and commands are documented in the official Alphatec datasheets, which you can add manually in ModbusCloud.

04

What parity and stop bit settings should I use?

Refer to your specific Alphatec model datasheet for the exact serial settings. A common configuration is 8 data bits, 1 stop bit, and no parity (8N1), but confirm this against the manufacturer documentation.

Registers (6)

6 read / 2 write

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