How To Articles > How to Transfer Data from MQTT to Sparkplug B

How to Transfer Data from MQTT to Sparkplug B

MQTT to Sparkplug B


Open Automation Software can transfer custom data from MQTT brokers to the same or different MQTT brokers in Sparkplug B payloads as an Edge of Network Node, locally or over a network. This tutorial walks you through downloading and installing OAS, configuring an MQTT and a Sparkplug B driver, configuring MQTT tags, and defining the EoN Group ID, Edge Node ID, Device ID, and Metric name.

Step 1. Download and Install the Open Automation Software and Start the OAS Service

If you have not already done so, you will need to download and install the OAS platform.  Fully functional trial versions of the software are available for Windows, Windows IoT Core, Linux, Raspberry Pi and Docker on our downloads page.

On Windows run the downloaded Setup.exe file to install one or more of the Open Automation Software features. Select the default Typical installation if you are not sure what features to use or the Custom installation if you want to save disk space on the target system.  When prompted agree to the End User License Agreement to continue the installation.

For more detailed instructions and video tutorials, visit the installation guide for your system:
Windows Installation | Linux Installation | Raspberry Pi Installation | Dockers Installation

The OAS Service Control application will appear when the installation finishes on Windows.  Use this application to start the 3 Services. Run the Configure OAS application on Windows and select Configure-Tags; if the first time running, the AdminCreate utility will run to create an Administrator login as shown in Step 1 of Getting Started – Security.

Step 2. Configure Your MQTT Data Source

  1. First, you will need to open the Configure OAS application from the program group Open Automation Software.

  2. Select Configure >> License from the top menu and verify that MQTT is one of the available Drivers in the lower left of the form. The demo license will have this by default. If you do not see MQTT available, contact support@openautomationsoftware.com to update your license.

  3. Select Configure >> Drivers from the top menu.


  4. Select localhost or the remote service you wish to modify with the Select button to the right of the Network Node list.


  5. The Configure Drivers Screen will appear. Select MQTT from the Driver dropdown box.


  6. Enter a meaningful Driver Interface Name that you will refer to this physical connection when defining Tags with a MQTT Data Source.

  7. Enter the IP Address of the broker. The default port is 1883.

  8. Enter the User Name and Password if required.

  9. Set the Keep Alive Time. The default is 60 Seconds.

  10. Set the Reconnect Time. The default 10 Seconds. If the connection to the broker is lost the Reconnect Time determines how long to wait before attempting to reconnect.

For more detailed instructions on configuring your MQTT data source, click here to see our Getting Started MQTT tutorial or watch the video tutorial below:

Step 4. Configure Your MQTT Tags

OAS provides multiple ways to add and define tags:

To add a Tag manually:

  1. In the OAS Configure Application, select Configure >> Tags from the top menu.


  2. Select localhost or the remote service you wish to modify with the Select button to the right of the Network Node list.


  3. Click on the Add Tag button located at the top of the Tag browser on the left portion of the screen.


  4. A dialog box will appear. Enter a name for your new tag and click ok.

  5. A configuration screen will appear for your new tag. Select your data source type in in the Data Source dropdown box.


  6. Specify the correct data type in the Data Type dropdown box.

  7. Click Apply Changes at the bottom right of the window.

For more detailed instructions on configuring your tags, click here to see our Getting Started Tags tutorial.

Step 4. Define Sparkplug B Group ID, Edge Node ID, Device ID, and Metric Names.

Select Configure-Drivers.

Configure Drivers

Enter a meaningful Driver Interface Name that you will refer to this connection and define the properties.

Set the driver to Sparkplug B.

Enter the Host property to the IP Address of the of the host broker or just use localhost for a local broker. 

Set the Port property of the host broker to connect to.  The default port is 1883 or 8883 for SSL.

Note: The OAS MQTT Broker can be used to host data locally.  To use another broker on the default ports on the same computer change the OAS MQTT Broker Port under Configure-Options-MQTT Broker.

Enter the User Name and Password if required.

Set the MQTT Protocol Version to V311 or V500.

Set the Client ID to a unique value, each driver interface must have a specific value different than all other clients connecting to the host.

Set the Mode to Edge Node.

Set the Hode Mode to Remote Hosted if a Host Application to control the state of this Edge Node including another OAS driver set as Host App.  Set to Self Hosted to have this OAS driver control the state of the Edge Node.

Set the Host ID to the specific value that the Edge of Nodes will be using as the Host Application ID.

Set the Sparkplug B Version to 2.2 or 3.0.

Set the Group ID and Edge Node ID that defines this EoN Node.

Note: This Group ID and Edge Node ID values will be used in the next steps to define which OAS tags will be enabled for hosting values in the next step to Define OAS Tags as EoN Node using the Host Group ID and Host Edge Node ID tag properties.

Optionally set the Device ID Filter to include only a specific device defined by the Tag property Host Device ID.  Leave blank to include all tags with all Host Device IDs defined with same Group ID and Edge Node ID.

Select the Add Driver button in the left part of the form to add the Driver Interface.

Add Driver

Select Configure-Tags.

Menu Configure Tags

Select a tag defined in the first step as the data source.

Set the Host properties of the tag to match the Group ID and Edge Node ID defined in the Sparkplug B Driver Interface. Set the Device ID to represent the Sparkplug B device. Set the Metric Name to represent the value from the source tag.

Note: The Group ID / Edge Node ID / Device ID / Metric Name combination must be unique in the OAS Engine.

Repeat the same step for all source tags or use the CSV Export button to save to a CSV file then update the Value – SpB Host Group ID, Value – SpB Host Edge Node ID, Value – SpB Host Device ID, and Value – SpB Host Metric Name columns in the CSV file using Excel, save, close Excel, then use the CSV Import button.

Data is now publishing to the MQTT broker defined in the Sparkplug B driver interface if running in Self Hosted or the Host Application state for the Host ID is online.

Select the Save button from the toolbar to save your configuration.

Save Button

You can view the Getting Started with Sparkplug B Video to familiarize yourself with the above steps to setup OAS as a Sparkplug B Edge of Network Node and a Host Application

  • 00:00 – Introduction
  • 01:10 – Download OAS
  • 01:46 – Quick Start
  • 02:08 – Edge of Network Node
  • 05:52 – EoN Tags
  • 07:04 – Host Application
  • 09:20 – SpB Client Tags
  • 10:22 – Programatic Interface
  • 10:59 – CSV Export / Import
  • 12:27 – Multiple Metric Tags
  • 13:46 – Modbus
  • 16:10 – DCMD Metric Write
  • 17:00 – Data Route
  • 17:58 – Networking
  • 18:17 – Save Configuration
  • 18:56 – OAS Platform