{"id":496,"date":"2019-11-20T15:14:41","date_gmt":"2019-11-20T15:14:41","guid":{"rendered":"http:\/\/opcconnect.integrationobjects.com\/?p=496"},"modified":"2026-02-26T10:09:03","modified_gmt":"2026-02-26T10:09:03","slug":"use-opc-client-mqtt-send-opc-da-data-azure-iot-hub","status":"publish","type":"post","link":"https:\/\/integrationobjects.com\/blog\/use-opc-client-mqtt-send-opc-da-data-azure-iot-hub\/","title":{"rendered":"Tutorial instructions: how to send OPC DA data to Azure IoT Hub"},"content":{"rendered":"\r\n

The OPC Client for MQTT<\/a> collects OPC data <\/strong>in real-time and publish them into MQTT brokers. You can use it to send the collected data to Azure IoT Hub as well. This tutorial provides detailed steps how you achieve this configuration.<\/p>\r\n

The main steps are as follows:<\/p>\r\n

1. Create an Azure IoT Hub in the Azure Portal. If you do not yet have access to the Azure portal, you can create a free Azure account here<\/a><\/span>.
2. Extract the Azure IoT Hub connections data.
3. Configure the OPC Client for MQTT<\/span><\/a> to connect to your configured IoT Hub.<\/p>\r\n\r\n\r\n\r\n

Steps to collect and send OPC DA data to Azure IoT Hub<\/h2>\r\n\r\n\r\n\r\n

1. Create an Azure IoT Hub<\/h3>\r\n


a. Login to the Azure Portal with your account.
b. Create a new resource with the type \u201cIoT Hub\u201d.<\/p>\r\n\r\n\r\n\r\n

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\"Create<\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n

c. Choose a resource group, name the IoT Hub and then finalize your configuration after review:<\/p>\r\n\r\n\r\n\r\n

\r\n
\"Azure<\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n

New Azure IoT Hub<\/strong><\/p>\r\n\r\n\r\n\r\n

2. Extract Azure IoT Hub Connection Data<\/h3>\r\n


a. Select the newly created IoT Hub under \u201cAll Resources\u201d and select the \u201cShared Access Policies<\/strong>\u201d(1) and then choose \u201ciothubowner<\/strong>\u201d(2)
b. Copy the \u201cConnection string \u2013 Primary key<\/strong>\u201d(3) from the \u201ciothubowner<\/strong>\u201d policy:<\/p>\r\n\r\n\r\n\r\n

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\"Azure<\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n

Connection string \u2013 Primary Key<\/strong><\/p>\r\n\r\n\r\n\r\n

Then, we will extract The MQTT connection parameters from this connection string using the \u201cDeviceExplorer<\/strong>\u201d that you can download from here<\/span><\/a>.<\/p>\r\n\r\n\r\n\r\n

c. Open the DeviceExplorer tool and go to the configuration tab. Paste the copied connection string- Primay key connection string (1) , enter the right hostname(2) and then click the \u201cUpdate<\/strong>\u201d button (3):<\/p>\r\n\r\n\r\n\r\n

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\"IoT<\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n

IoT Hub Device Explorer<\/strong><\/p>\r\n\r\n\r\n\r\n

d. Go to Management Tab (1), select \u201cCreate\u201d (2), choose a Device name (3) and then click the \u201cCreate<\/strong>\u201d button (4):<\/p>\r\n\r\n\r\n\r\n

\r\n
\"Create<\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n

Create IoT Hub Device<\/strong><\/p>\r\n\r\n\r\n\r\n

e. Click the \u201cSAS Token<\/strong>\u201d button,\u00a0 select the newly created Device (1) and set a life time period (2). Then, click the \u201cGenerate<\/strong>\u201d button (3) in order to copy out the required password for the client (4):<\/p>\r\n\r\n\r\n\r\n

\r\n
\"IoT<\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n

IoT Hub SAS Token<\/strong><\/p>\r\n\r\n\r\n\r\n

3. Configure the OPC Client for MQTT for connecting the IoT Hub<\/h3>\r\n\r\n\r\n\r\n

a. Once you have the OPC Client for MQTT installed and you opened its graphical user interface, you will need to connect to your OPC Server<\/a> and the OPC DA<\/strong> tags:<\/p>\r\n\r\n\r\n\r\n