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Read OPC-UA

Synopsis​

This operator reads new values from a specified OPC-UA node.

Description​

This operator returns all incoming values for a specified amount of time.

This operator can be used to collect new data and monitor the current status of a node. For a continuous deployment this operator or the whole process needs to be executed regularly.

Input​

connection​

Connection object specifying the connection to the OPC-UA server.

Output​

output​

ExampleSet that contains the read values of the node and the timestamp when they were read. If possible the values are already returned as a RapidMiner conform data type or as String for manual parsing.

Parameters​

Namespace id​

The ID of the namespace of the node from the where the browsing will start.

Node identifier​

The ID of the node from the where the browsing will start. This only works for numeric node IDs.

Node id as string​

If selected the node identifier can be provided in the common OPC-UA format for example: "ns=0;i=1000". Possible options for the node identifier are: "i=" followed by a numeric identifier or "s=" followed by a string.

Request interval​

How frequently should the server be polled for a new value. Measured in milliseconds.

Request duration​

How long shall requests for new values send to the server. Measured in milliseconds.