WOLFRAM SYSTEM MODELER
ReadAdds reading of a Real scalar node to a ReadNodeList |
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Diagram
Wolfram Language
In[1]:=
SystemModel["OPCUA.Components.Unclocked.RealSignals.Read"]
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Information
This component reads scalar data from the specified node as part of the request defined by the ReadNodeList it's connected to.
See OPCUA.Interfaces.Node for how to specify the node identity and handle errors.
Parameters (7)
| nodeIDType |
Value: Type: UANodeIdType Description: The node identifier type |
|---|---|
| nodeID |
Value: Type: String Description: The node identifier |
| nodeNamespace |
Value: Type: Integer Description: The node namespace |
| errorHandling |
Value: Type: ErrorHandling Description: How to handle node errors (request errors are handled by the connected Read/WriteNodeList component) |
| enableSourceTimestamp |
Value: false Type: Boolean Description: Enable source timestamp output |
| enableServerTimestamp |
Value: false Type: Boolean Description: Enable server timestamp output |
| y_start |
Value: 0.0 Type: Real Description: Value of output y before the first read |
Connectors (5)
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severity |
Type: SeverityOutput Description: Node level status severity |
|---|---|---|
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list_a |
Type: List_a Description: Connector for propagating node registrations to a NodeList |
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sourceTimestamp |
Type: TimestampOutput Description: 'output Timestamp' as connector |
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serverTimestamp |
Type: TimestampOutput Description: 'output Timestamp' as connector |
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y |
Type: RealOutput Description: 'output Real' as connector |
Components (3)
| nodeObj |
Type: NodeObject |
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|---|---|---|
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read |
Type: Read Description: Adds reading of a Real scalar node to a ReadNodeList |
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hold |
Type: Hold Description: Hold the clocked, Real input signal and provide it as continuous-time output signal (zero order hold) |
Used in Examples (6)
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OPCUA.Examples Demonstrates how to write to and read from nodes on an OPC UA server |
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OPCUA.Examples Demonstrates the difference between the Clocked and Unclocked components |
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OPCUA.Examples Demonstrates a possible use of multiple OPC UA servers |
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OPCUA.Examples A tank system model where height data is written to and read from an OPC UA node on an OPC UA server |
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OPCUA.Examples Demonstrates how to sample data from an OPC UA node irregularly |
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OPCUA.Examples Demonstrates the interaction with an OPC UA server on a Raspberry Pi |