# RS485 to Modbus TCP adapters

> Use an RS485 to Modbus TCP adapter when a device only offers a serial interface, so the controller can reach it over the network.

Source: https://voltmasters.io/en/docs/getting-started/adding-and-verifying-devices/rs485-to-modbus-tcp-adapters/

Some devices communicate over **Modbus RTU (RS485)** rather than Ethernet. To make these devices reachable by the controller over the network, an RS485-to-Modbus-TCP adapter (gateway) converts the serial RS485 signal to Modbus TCP.

Use one of the supported adapters below when a device only offers an RS485 interface.

After the adapter is configured, the device can be added on the platform like any other Modbus TCP device. See [Adding and verifying devices](https://voltmasters.io/en/docs/getting-started/adding-and-verifying-devices/).

### Supported adapters

-   [EP E300](https://voltmasters.io/en/docs/getting-started/adding-and-verifying-devices/rs485-to-modbus-tcp-adapters/ep-e300/)
-   [Sollae](https://voltmasters.io/en/docs/getting-started/adding-and-verifying-devices/rs485-to-modbus-tcp-adapters/sollae/)
-   [Waveshare](https://voltmasters.io/en/docs/getting-started/adding-and-verifying-devices/rs485-to-modbus-tcp-adapters/waveshare/)