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Using Exception Triggers to Log Data When a Value Is Greater Than or Equal to a Value


Last Update: 2018/11/07

There is no greater than or equal to or lesser than or equal to condition for exception-based triggers in DataLogger. For an example of how to set a condition where a log group is triggered when a tag's value is greater than or equal to 5, refer to the instructions below.

  1. Create an exception-based trigger for the log group. Then, specify whether the data will be logged via static interval, data change, or both.
  2. Once finished, click Next.
  3. Configure the stop and start conditions. Select the Start tab, and use the search button to browse the server for the tag that will be used as a trigger for the log group.
  4. Set the rate at which the trigger tag should be polled and evaluated. This rate should be faster than the rate at which the data is expected to change.
  5. Set the condition to be greater than a value, and set that value to 4.
  6. Next, select the Stop tab, and use the search button to browse the server for the tag that will be used as a trigger for the log group.
  7. Set the rate at which the trigger tag should be polled and evaluated. This rate should be faster than the rate at which the data is expected to change.
  8. Set the condition to be less than a value, and set that value to 5.
  9. Click Next | Finish to complete the log group.

With this configuration, when the tag's value is greater than or equal to 5, the log group will enter a triggered state and logging will start. When the tag's value is less than 5, the log group will no longer be triggered and logging will stop.

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