---
title: "OPC UA Interface Reference"
product: "LumiScan VGR"
component: "lumiscan-vgr"
version: "1.8.4"
display_version: "1.8.4.6"
latest_version: true
language: "en"
url: "https://docs.hdvisionsystems.com/en/lumiscan-vgr/1.8.4/opcua.html"
---

# OPC UA Interface Reference – LumiScan VGR

The OPC UA interface provides communication between LumiScan VGR and an OPC UA client.

The reference documentation covers:

- connection settings
- the OPC UA address space
- available methods and their arguments
- the recommended call sequence
- return codes
- troubleshooting (see [Troubleshooting: OPC UA](https://docs.hdvisionsystems.com/en/lumiscan-vgr/1.8.4/troubleshooting.html#opc-ua))

The documentation is generated from the Doxygen source documentation of the LumiScan VGR OPC UA interface.

## OPC UA Documentation

- [OPC UA Client Integration Guide](https://docs.hdvisionsystems.com/en/lumiscan-vgr/1.8.4/api/opcua/opc-ua-client-integration-guide.html)