Versions Type Operating system Requirements Dependencies Configuration Input data Output data Local log file Licenses Changelog See also

IoT SiteWise OPC UA collector

The IoT SiteWise OPC UA collector component (aws.iot.SiteWiseEdgeCollectorOpcua) enables Amazon IoT SiteWise gateways to collect data from local OPC UA servers.

With this component, Amazon IoT SiteWise gateways can connect to multiple OPC UA servers. For more information about Amazon IoT SiteWise gateways, see Using Amazon IoT SiteWise at the edge in the Amazon IoT SiteWise User Guide.

Versions

This component has the following versions:

3.0.x
2.6.x
2.5.x
2.4.x
2.3.x
2.2.x
2.1.x
2.0.x

Type

This component is a generic component (aws.greengrass.generic). The Greengrass nucleus runs the component's lifecycle scripts.

For more information, see Component types.

Operating system

This component can be installed on core devices that run the following operating systems:

Linux
Windows

Requirements

This component has the following requirements:

The Greengrass core device must run on one of the following platforms:
- os: Ubuntu 20.04 or later
  
  architecture: x86_64 (AMD64) or ARMv8 (Aarch64)
- os: Red Hat Enterprise Linux (RHEL) 8
  
  architecture: x86_64 (AMD64) or ARMv8 (Aarch64)
- os: Amazon Linux 2
  
  architecture: x86_64 (AMD64) or ARMv8 (Aarch64)
- os: Debian 11
  
  architecture: x86_64 (AMD64) or ARMv8 (Aarch64)
- os: Windows Server 2019 or later
  
  architecture: x86_64 (AMD64)
The Greengrass core device must allow outbound network connectivity to OPC UA servers.

Dependencies

When you deploy a component, Amazon IoT Greengrass also deploys compatible versions of its dependencies. This means that you must meet the requirements for the component and all of its dependencies to successfully deploy the component. This section lists the dependencies for the released versions of this component and the semantic version constraints that define the component versions for each dependency. You can also view the dependencies for each version of the component in the Amazon IoT Greengrass console. On the component details page, look for the Dependencies list.

The following table lists the dependencies for all versions of this component.

Dependency	Compatible versions	Dependency type
Greengrass nucleus	>=2.3.0 <3.0.0	Hard
Stream manager	>2.0.10<3.0.0	Hard
Secret manager	>=2.0.8 <3.0.0	Hard

For more information about component dependencies, see the component recipe reference.

Configuration

This component doesn't have any configuration parameters.

You can use the Amazon IoT SiteWise console or API to configure the IoT SiteWise OPC UA collector component. For more information, see Step 4: Add data sources - optional in the Amazon IoT SiteWise User Guide.

Input data

This component only accepts data in the following formats, all others will be ignored and discarded. The table below maps the OPC UA data types to their SiteWise equivalent.

SiteWise data type	OPC UA data type	Description
`STRING`	`String` `Guid` `XmlElement`	A string of maximum length 1024 bytes.
`INTEGER`	`SByte` `Byte` `Int16` `UInt16` `Int32` `UInt32`* `Int64`*	A signed 32-bit integer with a range from `-2,147,483,648 to 2,147,483,647` .
`DOUBLE`	`UInt32`* `Int64`* `Float` `Double`	A floating point number with range from `–10^100 to 10^100` and `IEEE 754` double precision.
`BOOLEAN`	`Boolean`	`true` or `false`.

* For OPC UA data types UInt32 and Int64, its SiteWise data type will be INTEGER if SiteWise is able to represent its value, otherwise it will be DOUBLE.

Output data

This component writes BatchPutAssetPropertyValue messages to Amazon IoT Greengrass stream manager. For more information, see BatchPutAssetPropertyValue in the Amazon IoT SiteWise API Reference.

Local log file

This component uses the following log file.

To view this component's logs

Run the following command on the core device to view this component's log file in real time. Replace /greengrass/v2 or C:\greengrass\v2 with the path to the Amazon IoT Greengrass root folder.
Linux
```
sudo tail -f /greengrass/v2/logs/aws.iot.SiteWiseEdgeCollectorOpcua.log
```
Windows (PowerShell)
```
Get-Content C:\greengrass\v2\logs\aws.iot.SiteWiseEdgeCollectorOpcua.log -Tail 10 -Wait
```

Licenses

This component is released under the Greengrass Core Software License Agreement.

Changelog

The following table describes the changes in each version of the component.

Version	Changes
3.0.1	Bug fixes and improvements Fixes security vulnerabilities. Fixes an issue with OPC UA timestamp handling. Adds a preferred timestamp selection and improves fallback logic when the preferred timestamps are unavailable. Fixes an issue where Classic streams, V2 gateway OPC UA collector configurations fail to default to Stream Manager when no destination is specified.
3.0.0	New features Added support for MQTT-enabled, V3 gateways in addition to Classic streams, V2 gateways (formerly known as self-hosted SiteWise Edge gateways). For more information, see MQTT-enabled, V3 gateways for Amazon IoT SiteWise Edge. Allows OPC UA data to be published to the Amazon IoT Greengrass MQTT 5 broker (EMQX). Bug fixes and improvements Fixes security vulnerabilities.
2.6.0	New features Added support for ingestion of Null and NaN values if ingestion is enabled in Amazon IoT SiteWise. To view or modify the Null and NaN configuration in Amazon IoT SiteWise, see the DescribeStorageConfiguration and PutStorageConfiguration APIs.
2.5.1	Bug fixes and improvements Fixes a bug where future snapshotting tasks are cancelled if an error is encountered while a snapshot task is running. Fixes a bug where data source configuration updates do not persist until after restarting the OPC UA Collector, if the connection to the data source's OPC UA server is lost.
2.5.0	New features Adds a data source option to convert simple arrays and DateTime values to strings. Adds a property group option to select either a source or server timestamp when collecting data from an OPC UA server. Bug fixes and improvements Resets the default polling configuration to use the source timestamp.
2.4.2	Bug fixes and improvements Fixes issues during OPC UA server discovery in which a node may be discovered multiple times. Fixes the snapshot feature to ensure the timestamp is new for each snapshot data point.
2.4.1	Bug fixes and improvements Fixes issues related to proxy support. Fixes issue where thread cleanup failed and caused a data blockage.
2.4.0	New features Adds an events log to make it easier to identify and remediate problems. Bug fixes and improvements Fixes an issue with the OPC UA client that caused certificate errors when connecting to an OPC UA server that uses version 1.05 of the OPC UA specification.
2.3.0	New features Adds support for the Greengrass nucleus HTTP proxy configuration on Linux. Bug fixes and improvements Fixes a security issue (CVE-2019-19135).
2.2.0	New features Adds support for installing Data Collection Pack on Linux ARMv8 architecture. Minimum requirements for Linux ARMv8: Memory: 4 GB CPU: ARM Cortex-A72 or equivalent specification Bug fixes and improvements Improves logging of metrics in node discovery process. Improves handling of unsupported data types. Improves logging of data stream errors.
2.1.3	New features Adds support for Windows Server 2019 or higher. Bug fixes and improvements Improves error messages when you deploy this component on unsupported devices.
2.1.1	New features Adds support for configuring the following subscription properties: DataChangeTrigger ‐ You can define the condition that initiates a data change alert. QueueSize ‐ The depth of the queue on an OPC‐UA server for a particular metric where notifications for Monitored Items are queued. PublishingIntervalMilliseconds ‐ The interval (in milliseconds) of a publishing cycle specified when a subscription is created. SnapshotFrequencyMilliseconds ‐ You can configure the snapshot frequency timeout setting to ensure that Amazon IoT SiteWise Edge ingests a steady stream of data. This version supports ingestion of `BAD` quality data and filters data based on the following data qualities: `UNCERTAIN` quality data `BAD` quality data Bug fixes and improvements Improvements to customer metrics. Fixes the security encoding that sometimes caused issues when connecting to servers with encryption enabled. Fixes an issue where the property group failed to update.
2.0.3	Bug fixes and improvements.
2.0.2	Bug fixes and improvements to asset priority syncing with edge.
2.0.1	Initial version.