====Event Detection Example: Energy Spikes====

In this example, we'd like to point out when any of our machines are running at more than 100% of their rated power.

===Available Information===

^Asset^Property^Desc^
|Motor|Current - Percentage|The amount of current, relative to nameplate maximum|

===Initial Layout===

{{example_event_start.png}}

To begin with, we have one [[event_output|Event Output]] node, one [[ardi_point|ARDI Point]], a [[basic_const|Numeric Constant]] and a [[math_condition|Condition]] node.

===Step 1: Capture When Current > 100%===

First, we need to choose the right property to read from.

  * Click on //None// on the the ARDI Point node
  * Choose **Motor Current - Percentage** from the list

Next, we set the threshold we want to use to determine if we're over the maximum current draw.

   * Click on the //Const Number// option, and enter '100'

This logic will now highlight whenever the current on the machine exceeds 100%.

===Step 2: Capturing Event Data===

Often, well want a little more context about our events. The [[event_metadata|Metadata]] node allows us to capture specific values from when the event began.

If we wanted to know what the current //actually was// when the event triggered, we would...

  * Right-click the background, choose **Add Node**, **Event** and **Metadata**.
  * Drag the output of our //Current// node into our new //Metadata// node.
  * Right-click the metadata node, choose //Title// and call it 'Spike'.

{{example_event_basicend.png}}

This allows us to spot small events where our machine has been using more power than expected.

{{example_event_display.png}}

===More Examples===

We continue to extend this example in [[example_event_advanced|our advanced example]].