Chapter 10. OPC UA ServerGFK-2224Q January 2017 187OPC UA Client Authentication SettingsOPC UA provides three authentication methods to logon to a server: Anonymous, Username/Password, and Certificate-based.The OPC UA server supports Anonymous and Username/Password Authentication methods. Machine Editioncontroller project settings determine the Authentication method used by the OPC UA server.Anonymous AuthenticationYou enable OPC UA server Anonymous Authentication by disabling Controller passwords. Machine Edition isused to disabled controller passwords. To access this setting using Machine Edition, open the Controllerhardware configuration with the Project tab within the Navigator, expand the hardware configuration, andselect the controller. Double-click the controller tree node to access the controller-specific hardwareconfiguration settings. Select the Settings tab, then set the Passwords parameter to Disabled (see screenshotbelow).Figure 71: Machine Edition Controller Hardware Configuration – Passwords Disabled
