# 9. OPC-UA-based Information Model and Data Access
# 9.1 Basic Operation
Adding OPCUA Server Function
# 9.2 Configuring OPC-UA Server
# 9.2.1 Login
There are two login methods: anonymous login and username and password login.
Log in anonymously
Log in with your username and password
# 9.2.2 Variables Monitoring
To monitor variables , you can select the variables to be monitored on the Variables tab page.
# 9.2.3 Service Discovery
The service address is the address of the LDS server, and after service discovery is enabled, the OPC-UA server periodically registers/updates the OPC-UA Server information with the LDS server at the reporting interval entered by the user.
# 9.2.4 Channel Encryption
OPC-UA Server supports the following encryption methods:
