WOLFRAM SYSTEM MODELER
MultipleWriteA block for writing data to multiple items on an OPC server at intervals determined by parameter samplePeriod |
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Wolfram Language
In[1]:=
SystemModel["OPCClassic.Blocks.SamplerReal.MultipleWrite"]
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Information
This block writes data from multiple items of type of type Real from the OPC server it is connected to. It inherits the properties of the partial model Sampler, which contains parameters such as samplePeriod and itemName that determine how often and to which OPC items the data should be written.
At every sampling instant, external function writeExternalReal is called from within the block.
Relevant Parameters
- samplePeriod: determines how often to sample data from the OPC items
- startTime: when the block should start to write data
- itemName: which OPC items to write data to
- uMax: if useUMax is true, then uMax is the upper limit for the written data
- uMin: if useUMin is true, then uMin is the lower limit for the written data
- useUMax: if true, respect upper limit uMax
- useUMin: if true, respect lower limit uMin
Interfaces
- u: a Real array input of the same size as itemName, 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
Parameters (7)
| samplePeriod |
Value: Type: Time (s) Description: Sample period of component (readItem.samplePeriod) |
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| startTime |
Value: 0 Type: Time (s) Description: First sample time instant (readItem.startTime) |
| itemName |
Value: {""} Type: String[:] Description: The OPC item that data should be written to or read from (readItem.itemName) |
| useUMax |
Value: false Type: Boolean Description: If true, use upper limit for written signal (writeItem.useUMax) |
| uMax |
Value: 1.0 Type: Real Description: Upper limit of written signal (writeItem.uMax) |
| useUMin |
Value: false Type: Boolean Description: If true, use lower limit for written signal (writeItem.useUMin) |
| uMin |
Value: 0 Type: Real Description: Lower limit of written signal (writeItem.uMin) |
Connectors (2)
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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: RealInput[size(itemName, 1)] Description: Input signal to be sampled |
Components (1)
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writeItem |
Type: Write[size(itemName, 1)] Description: A block for writing data to an item on an OPC server at intervals determined by parameter samplePeriod |
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Used in Examples (1)
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OPCClassic.Examples Example that demonstrates how multiple items can be read using the same component |