UA Settings

This section describes the general communication settings of the OPC UA server.

Allow Anonymous Login: allows OPC UA client not to provide username and password when opening a connection.

Enable UA TCP Endpoint: allows connection to the OPC UA Server using the UA TCP protocol (binary protocol).

Please note that by default anonymous connection to the OPC UA server is allowed

Max Notification Queue Size: specifies the maximum number of notifications stored in the queue for each monitored data change item.

Max Notifications per Publish: indicates the maximum number of messages sent in one publication response.

Max Message Queue Size: specifies the maximum number of sent messages that are saved in the queue for each subscription.

Min Session Timeout: indicates the minimum number of milliseconds during which the session remains open.

Max Session Timeout: specifies the maximum number of milliseconds during which the session remains open.

Max Session Count: indicates the maximum number of simultaneous sessions.

Max Browse Continuation Points: specifies the maximum number of continuation points used in Browse/BrowseNext operations.

Min Subscription Lifetime: sets the minimum subscription lifetime, which can be specified by OPC UA client when creating a subscription.

Max Subscription Lifetime: sets the maximum subscription lifetime, which can be specified by OPC UA client when creating a subscription.

Min Publishing Interval: sets the minimum subscription publishing interval, which can be specified by OPC UA client when creating a subscription.

Max Publishing Interval: sets the maximum subscription publishing interval, which can be specified by OPC UA client when creating a subscription.

Min Sampling Interval: sets the minimum sampling rate, which can be specified by OPC UA client when creating a monitoring item.

After changing and synchronizing the settings described above the OPC UA server will be automatically restarted.