OPC UA Node Selector

Overview

You can use this Snap to select multiple Node IDs. It supports up to ten Node IDs. Learn how to select multiple nodes using this Snap.


node selector

Prerequisites

A valid OPC UA Account.

Snap views

View Description Examples of upstream and downstream Snaps
Input Upstream Snaps are not supported because the Input view is not available for this Snap.
Output The OPC UA Node Selector Snap typically outputs documents containing Node ID (the unique identifier for each selected node).
Error

Error handling is a generic way to handle errors without losing data or failing the Snap execution. You can handle the errors that the Snap might encounter when running the pipeline by choosing one of the following options from the When errors occur list under the Views tab. The available options are:

  • Stop Pipeline Execution Stops the current pipeline execution when an error occurs.
  • Discard Error Data and Continue Ignores the error, discards that record, and continues with the remaining records.
  • Route Error Data to Error View Routes the error data to an error view without stopping the Snap execution.

Learn more about Error handling in Pipelines.

Snap settings

Legend:
  • Expression icon (): Allows using JavaScript syntax to access SnapLogic Expressions to set field values dynamically (if enabled). If disabled, you can provide a static value. Learn more.
  • SnapGPT (): Generates SnapLogic Expressions based on natural language using SnapGPT. Learn more.
  • Suggestion icon (): Populates a list of values dynamically based on your Snap configuration. You can select only one attribute at a time using the icon. Type into the field if it supports a comma-separated list of values.
  • Upload : Uploads files. Learn more.
Learn more about the icons in the Snap settings dialog.
Field / Field set Type Description
Label String

Required. Specify a unique name for the Snap. Modify this to be more appropriate, especially if more than one of the same Snaps is in the pipeline.

Default value: Node Selector

Example: Node Selector
Node ID 1 String/Expression/ Suggestion

Required. Specify a Node ID or choose one from the suggestions. Learn more about Node suggestions.

Default value: N/A

Example: O : Objects (ns=0;i=85)
Node ID 2 String/Expression/ Suggestion

Required. Specify a Node ID or choose one from the suggestions.

Default value: N/A

Example: O : Objects (ns=0;i=85)
Node ID 3 String/Expression/ Suggestion

Required. Specify a Node ID or choose one from the suggestions.

Default value: N/A

Example: O : Objects (ns=0;i=85)
Node ID 4 String/Expression/ Suggestion

Required. Specify a Node ID or choose one from the suggestions.

Default value: N/A

Example: O : Objects (ns=0;i=85)
Node ID 5 String/Expression/ Suggestion

Required. Specify a Node ID or choose one from the suggestions.

Default value: N/A

Example: O : Objects (ns=0;i=85)
Node ID 6 String/Expression/ Suggestion

Required. Specify a Node ID or choose one from the suggestions.

Default value: N/A

Example: O : Objects (ns=0;i=85)
Node ID 7 String/Expression/ Suggestion

Required. Specify a Node ID or choose one from the suggestions.

Default value: N/A

Example: O : Objects (ns=0;i=85)
Node ID 8 String/Expression/ Suggestion

Required. Specify a Node ID or choose one from the suggestions.

Default value: N/A

Example: O : Objects (ns=0;i=85)
Node ID 9 String/Expression/ Suggestion

Required. Specify a Node ID or choose one from the suggestions.

Default value: N/A

Example: O : DeviceSet (ns=2;i=5001)
Snap execution Dropdown list
Choose one of the three modes in which the Snap executes. Available options are:
  • Validate & Execute: Performs limited execution of the Snap and generates a data preview during pipeline validation. Subsequently, performs full execution of the Snap (unlimited records) during pipeline runtime.
  • Execute only: Performs full execution of the Snap during pipeline execution without generating preview data.
  • Disabled: Disables the Snap and all Snaps that are downstream from it.

Default value: Validate & Execute

Example: Execute only

Node suggestions

Here are a few things to note about node suggestions:

  • Suggestions for the node are generated by traversing the OPC UA address space one step at a time.

  • The suggestion format is: <Type Abbreviation> : <Display Name> (<NodeId>)

    For example: V : Temperature (ns=2;s=Temperature1)

  • Abbreviations used for NodeClass:

    • O = Object

    • V = Variable

    • M = Method

    • OT = ObjectType

    • VT = VariableType

    • RT = ReferenceType

    • DT = DataType

    • VW = View

    • U = Unspecified

  • Navigation: You can iteratively traverse the address space by following these steps:

    1. Select a suggestion.

    2. Click Suggest again.

    3. Fetch children of the selected node.

Examples