Difference between revisions of "Activity:ConfigureOpcUa...Item (Activity)"
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| + | The ConfigureOpcUa...Item activities register 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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| + | This page is a generic description covering all activities available for registering Opc Ua variables, namely | ||
| + | * [[Activity:ConfigureOpcUaAnalogItem_(Activity)|ConfigureOpcUaAnalogItem]]: for analog values | ||
| + | * [[Activity:ConfigureOpcUaDiscreteItem_(Activity)|ConfigureOpcUaDiscreteItem]]: for analog values (e.g. boolean) | ||
| + | * [[Activity:ConfigureOpcUaMultiStateDiscreteItem_(Activity)|ConfigureOpcUaMultiStateDiscreteItem]] | ||
| + | * [[Activity:ConfigureOpcUaTwoStateDiscreteItem_(Activity)|ConfigureOpcUaTwoStateDiscreteItem]] | ||
| + | |||
| + | Each of the above activities can be used for a certain Opc Ua variable type, respectively. | ||
| + | |||
| + | =Description= | ||
{{ActivityInfoBox | {{ActivityInfoBox | ||
| title = Configure OPC UA Variable | | title = Configure OPC UA Variable | ||
| Line 10: | Line 21: | ||
}} | }} | ||
| − | + | ===Arguments=== | |
| − | + | ||
| − | ==Arguments== | + | |
| − | + | ||
{| 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 [[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]] | ||
| + | |||
| + | <headertabs /> | ||
==See also== | ==See also== | ||
* [[Workflow Designer]] | * [[Workflow Designer]] | ||
| − | * [[CreateOPCUAConnection (Activity)]] | + | * [[Activity:CreateOPCUAConnection (Activity)]] |
| − | * [[CreateOPCUAScope (Activity)]] | + | * [[Activity:CreateOPCUAScope (Activity)]] |
| − | [[Category:OPC | + | [[Category:OPC|ConfigureOpcUa...Item (Activity)]] |
| − | + | ||
Latest revision as of 09:58, 15 June 2016
The ConfigureOpcUa...Item activities register a single variable within an OPC UA Connection. Only registered variables can be accessed later on with AccessOPCUAVariable activities.
This page is a generic description covering all activities available for registering Opc Ua variables, namely
- ConfigureOpcUaAnalogItem: for analog values
- ConfigureOpcUaDiscreteItem: for analog values (e.g. boolean)
- ConfigureOpcUaMultiStateDiscreteItem
- ConfigureOpcUaTwoStateDiscreteItem
Each of the above activities can be used for a certain Opc Ua variable type, respectively.
[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":
