Difference between revisions of "Activity:ConfigureOpcUa...Item (Activity)"
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| + | The ConfigureOPCUAVariable registers a single variable within an [[Activity:CreateOPCUAConnection (Activity)|OPC UA Connection]]. Only registered variables can be accessed later on with [[Activity:AccessOPCUAVariable (Activity)|AccessOPCUAVariable]] activities. | ||
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| + | =Description= | ||
{{ActivityInfoBox | {{ActivityInfoBox | ||
| title = Configure OPC UA Variable | | title = Configure OPC UA Variable | ||
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}} | }} | ||
| − | + | ===Arguments=== | |
| − | + | ||
| − | ==Arguments== | + | |
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{| class="wikitable sortable" | width = "50%" | {| class="wikitable sortable" | width = "50%" | ||
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|} | |} | ||
| − | ==Usage== | + | ===Usage=== |
This activity is used to configure a single variable for later access within an [[Activity:CreateOPCUAScope (Activity)|OPC scope]], only configured variables will be accessible. | This activity is used to configure a single variable for later access within an [[Activity:CreateOPCUAScope (Activity)|OPC scope]], only configured variables will be accessible. | ||
| − | + | =Example= | |
The ConfigureOPCUAVariable activity, as used in the larger example "Read value from OPC variable": | The ConfigureOPCUAVariable activity, as used in the larger example "Read value from OPC variable": | ||
[[File:UI_Activity_CreateOPCUAConnection_Example.png|x700px]] | [[File:UI_Activity_CreateOPCUAConnection_Example.png|x700px]] | ||
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| + | <headertabs /> | ||
==See also== | ==See also== | ||
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[[Category:OPC]] | [[Category:OPC]] | ||
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Revision as of 12:34, 23 February 2015
The ConfigureOPCUAVariable registers a single variable within an OPC UA Connection. Only registered variables can be accessed later on with AccessOPCUAVariable activities.
[edit]
Description
| Configure OPC UA Variable | |
|---|---|
| Name | ConfigureOPCUAVariable |
| Purpose | Configure a single OPC UA variable |
| Category | UBIK OPC UA Interface |
| Returns | True if successful |
| Version | 2.4.1+ |
Arguments
| Argument | Type | Direction | Purpose |
|---|---|---|---|
| BrowsePath | String | In | Specifies the browse path of the item on the server e.g. "/2:Plant1/2:Machine1/2:Unit1/2:Sensor1"). For a more detailed descriptions please refer to the OPC UA specification. |
| AutoRead | Boolean | In | Specifies the variable to be read from the server automatically after a connection to the server has been established. |
| Subscribe | Boolean | In | Specifies that the variable should automatically be entered into a subscription with the server to be updated with any changes to its value. |
| Interval | TimeSpan | In | Specifies the publishing interval to be used for the subscription. All variables using the same publishing interval are grouped together in a subscription for each publishing interval. |
| IndexRange | OpcUaIndexRange | In | For arrays, specifies the index range to be read or written. If left null, the entire array will be transferred. |
| Result | Boolean | Out | True if successful, false if failed |
Usage
This activity is used to configure a single variable for later access within an OPC scope, only configured variables will be accessible.
Example
The ConfigureOPCUAVariable activity, as used in the larger example "Read value from OPC variable":
