How to display graph to show telemetry increase/decrease

Question

Currently have a device with a pulse counter feeding data into IOT central. This device cannot reset the pulse counter after a certain period so it will accumulate indefinitely. Is there any option within IOT central that will let me display a graph that will show the increase/decrease in telemetry from the previous to the current value? If there isn't an option for the graph, is there some way we can configure the payload to calculate the previous payload once it leaves the TTN and comes to the IOT central. The device is an ursalink UC11-N1 node, a predecessor to the milesight UC501 series node. Any help would be appreciated.

Answer 1

Hi @Navaska Greetings! Welcome to Microsoft Q&A forum. Thank you for posting this question here.

Azure IoT Central offers Views which let you define views and forms that let you monitor and interact with a device. Views use visualizations such as charts to show telemetry and property values. I do see two view types provided out of the box Event History and Event Chart which might fit with the use case you are looking for.

Please note that, for the views to work, you would need to set the Semantic Type of the property as an Event Here is how I have defined my telemetry property on the IoT Central Device template.

You can then create Event History and Event chart views to display this data and assign this property. You can configure the time range on these views to customize the past time range till which you want to see the data.

Here is how each of these views would display the data to you.

Hope this answers your question. Please let us know if you need any additional assistance on this.

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