Listen to Device Online Offline Event

Device Online Event

Right-Click anywhere on canvas, select Event/Device Online

Expand left panel by clicking on tool bar button, select IoT tab on the side bar, then click on the product which your device is belong:

After clicking on the product, the device list will be shown. Select the device whose Online Event you want to listen to:

Connect the top right handle of the Device node to the Device Online node. Then let's add a Print node to print some text when device is online. Click Run on the tool bar (you can skip this step if you are in auto run mode which is the default mode). Now, when your device becomes online, you will see the text printed on the screen.

TIP

Notice that after device is online, the visualization of the device node will change slightly to reflect whether the device is online or offline.

Note that there is an arrow at the bottom of the Device node, when clicked, the properties of the device will be shown.

You can access device's infomation directly by connecting the handles on the Device node to the print node, for example:

TIP

The handle's color is based on the data type of the corresponding property.

Listen to device offline event

Similar to the device online event, we can also listen to the device offline event by adding a Device Offline node and connecting it to the Device node.

We can also combine the two like the following: