Teltonika EV Charging Stations

Supported Devices

Device Type	Variants	Modbus TCP (Ethernet)	RS485
TeltoCharge	7.4kW/11kW/22kW	✅*	✅

Warning

TCP is only available for version EVC2 or newer generation EV chargers.

Connection

The communication between the Sofar EMS and the TeltoCharge operates via an RS-485 serial bus or Modbus TCP.

RS485 Wiring

For correct RS485 wiring: follow the RS485 wiring guidelines.
If the wiring shown in the table below is incorrect, please let us know.
There is no general industry consensus on the use of A and B for RS485 polarity, so the naming may be counterintuitive for some devices.

Device	Sofar EMS model OM1	Sofar EMS model IG8	RS485-USB converter	RS485-Ethernet converter
RS485 A	RS485 A	RS485_POS	RS485 A	TX+
RS485 B	RS485 B	RS485_NEG	RS485 B	TX-
GND	RS GND	GND	Not available	G

NOTE: RS485 Device Addresses

You MUST give each device a unique address on the RS485 bus. Check the device manual for instructions.
Use lower addresses first (1, 2, ...) because the Sofar EMS will find them faster!
For each device, it is generally recommended to keep the factory-default baud rate, parity, and stop bits. The Sofar EMS will scan those first.

Settings

Follow the steps below to enable Modbus on the TeltoCharge:

Open the device settings in the Teltonika app.

Open the Installer Menu, you will need to input the installer code to access this menu.

Open the Load management menu.

Select the Modbus RTU option. You will need to disable other communication options to enable Modbus RTU.

Select "Secondary device" mode, and enable it. You can also set the Modbus address and other advanced settings in this menu, but the default settings should work fine.

The Sofar EMS will now be able to communicate with the TeltoCharge via Modbus RTU. You can check the connection status in the app.

Older Models

The TeltoCharge needs to have modbus enabled:

Open the Teltonika app
Navigate to "Settings" -> "Installer Menu"
Enable "Dynamic Load Balancing"
After doing this "Dynamic Load Management" will become visible
Scroll down and enable "Dynamic Load Management"
Click "Save"
The TeltoCharge will now reboot and modbus will be enabled

Last updated August 24, 2026

Teltonika EV Charging Stations

Supported Devices

Device Type	Variants	Modbus TCP (Ethernet)	RS485
TeltoCharge	7.4kW/11kW/22kW	✅*	✅

Warning

TCP is only available for version EVC2 or newer generation EV chargers.

Connection

The communication between the Sofar EMS and the TeltoCharge operates via an RS-485 serial bus or Modbus TCP.

RS485 Wiring

For correct RS485 wiring: follow the RS485 wiring guidelines.
If the wiring shown in the table below is incorrect, please let us know.
There is no general industry consensus on the use of A and B for RS485 polarity, so the naming may be counterintuitive for some devices.

Device	Sofar EMS model OM1	Sofar EMS model IG8	RS485-USB converter	RS485-Ethernet converter
RS485 A	RS485 A	RS485_POS	RS485 A	TX+
RS485 B	RS485 B	RS485_NEG	RS485 B	TX-
GND	RS GND	GND	Not available	G

NOTE: RS485 Device Addresses

You MUST give each device a unique address on the RS485 bus. Check the device manual for instructions.
Use lower addresses first (1, 2, ...) because the Sofar EMS will find them faster!
For each device, it is generally recommended to keep the factory-default baud rate, parity, and stop bits. The Sofar EMS will scan those first.

Settings

Follow the steps below to enable Modbus on the TeltoCharge:

Open the device settings in the Teltonika app.

Open the Installer Menu, you will need to input the installer code to access this menu.

Open the Load management menu.

Select the Modbus RTU option. You will need to disable other communication options to enable Modbus RTU.

Select "Secondary device" mode, and enable it. You can also set the Modbus address and other advanced settings in this menu, but the default settings should work fine.

The Sofar EMS will now be able to communicate with the TeltoCharge via Modbus RTU. You can check the connection status in the app.

Older Models

The TeltoCharge needs to have modbus enabled:

Open the Teltonika app
Navigate to "Settings" -> "Installer Menu"
Enable "Dynamic Load Balancing"
After doing this "Dynamic Load Management" will become visible
Scroll down and enable "Dynamic Load Management"
Click "Save"
The TeltoCharge will now reboot and modbus will be enabled

Last updated August 24, 2026

Teltonika EV Charging Stations

Supported Devices

Warning

Connection

RS485 Wiring

NOTE: RS485 Device Addresses

Settings

Older Models

On this page

Teltonika EV Charging Stations

Supported Devices

Warning

Connection

RS485 Wiring

NOTE: RS485 Device Addresses

Settings

Older Models

On this page