WOLFRAM SYSTEM MODELER
TriggeredWriteA block for writing data to items on an OPC server at intervals determined by an external Boolean signal (trigger) |
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Wolfram Language
In[1]:=
SystemModel["OPCUA.Blocks.SamplerBoolean.TriggeredWrite"]
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Information
This block writes data of scalar type Boolean to the OPC UA server it is connected to. Unlike the write blocks that have a parameter for setting the sample period, the triggered write blocks write data when Boolean input signal trigger has a rising edge. The block inherits the properties of the partial model TriggeredSampler. Only scalar nodes can be written to; i.e. no array or matrix nodes are supported.
At every sampling instant, external function writeExternalBoolean is called from within the block.
Relevant Parameters
- nodeID: which OPC UA node to write data to (ID value should always be inside quotes)
- nodeNamespace: which namespace the node is located in
- nodeIDType: which ID type to use, numeric or string
Interfaces
- u: a Boolean input, which is the signal to be sampled and written to the OPC server
- serverID: the connector that connects the block to the OPC server component
- trigger: a Boolean input that determines when the block should sample data from the input signal
Parameters (3)
| 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 |
Connectors (3)
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trigger |
Type: BooleanInput Description: Boolean input that determines when sampling should occur |
|---|---|---|
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serverID |
Type: BlockConnector Description: The unique ID of the server the block is connected to |
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u |
Type: BooleanInput Description: Input signal to be sampled |
Used in Examples (1)
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OPCUA.Examples Basic example that demonstrates how to write to and read from nodes on an OPC UA server using a signal trigger |