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OPC-UA Server

The OPC-UA Server page contains a list of all the OPC Tags configured within Ignition. Opening the page shows a list of OPC Server sessions. Hitting the Details button on one of the sessions will bring up a new page with the number of subscriptions that server has with their scan rate, and how many Tags are monitored in that subscription at the specified rate.


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OPC-UA Server Page

The main OPC-UA Server page contains basic information for all OPC-UA servers the Ignition system has access to.

AttributesDescription
IdThe id of the OPC-UA Server.
NameThe name of the OPC-UA Server.
UserThe user that is used to authenticate the connection to the server.
Remote AddressThe remote address of the server (127.0.0.1 is a local connection).
SubscriptionsThe total number of subscriptions or scan classes for this server.
Last ActivityThe last time the server had activity.


OPC-UA Server Details

Clicking on the Details button to the right of an OPC-UA server brings up more detailed information for that particular server. It will list out all of the subscriptions to that server with the publish rate, as well as the number of items within that subscription.

AttributesDescription
IdThe Id of the scan class.
Publishing IntervalThe rate at which the subscription publishes.
Data Change NotificationsThe number of data changes that have happened for that subscription.
Keep Alive NotificationsThe number of keep alive notifications that subscription has done.
Monitored ItemsThe number of items are within that subscription.


OPC-UA Server Subscription Details

Clicking the Details button for one of the subscriptions will bring up the list of subscribed OPC items.

AttributesDescription
Monitored ItemsThe number of items that are within that subscription.
Data Change PublishesThe number of data changes that have happened for that subscription.
Keep Alive PublishesThe number of keep alive notifications that subscription has done.
Node IdThe OPC item path.
Subscription RateThe rate of the subscription that the client requested.
Revised RateThe servers revised rate.
Node ClassThe Node Class of a Node such as Object, Variable, or Method
Data TypeThe data type of the item.