# Connect Devices via OPC UA

## About OPC UA

OPC UA (Unified Architecture) is a modern standard that describes data transfer in industrial networks. It offers secure and reliable communication between devices while being hardware- and platform-independent, which enables data exchange between devices with different operating systems.

## Special Features

A special feature of OPC UA is that no formats are required to convert incoming data. Instead, incoming data is mapped directly to the individual assets.

## Procedure

1. An [↗ endpoint is created](https://docs.buildings.ability.abb/collection/connectivity-as-a-service/connect-devices-to-abb-buildingpro/connect-devices-via-opc-ua/create-and-configure-an-endpoint) and configured.
2. On this endpoint, a [↗ subscription](https://docs.buildings.ability.abb/collection/connectivity-as-a-service/connect-devices-to-abb-buildingpro/connect-devices-via-opc-ua/create-and-configure-an-endpoint) is created.
3. In this subscription, one or more [↗ asset types](https://docs.buildings.ability.abb/collection/documentation/assets/asset-modeling-create-templates/create-a-new-template) are selected.
4. One or more assets of this type are assigned to the selected asset type.
5. The incoming values via OPC-UA are directly assigned to the respective asset attributes.