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J
JK_1074468213-Aquamarine
13-Aquamarine
February 3, 2026
Question

Alert for if value is outside limits for 30 minutes straight

  • February 3, 2026
  • 3 replies
  • 248 views

Hi all,

I have been tasked with setting up a new kind of alerting in thingworx. It involves tracking a property value constantly and if it has been outside of the limits for a certain duration (in my case 30 minutes straight) then it will alert. 

 

I'm stumped on how to go about this in an efficient manner as we would be constantly checking many properties at once with this logic. ~100 per thing across several things.

 

Is there any built-in way to do this? Or has anyone done something similar? 

3 replies

J
JK_1074468213-AquamarineAuthor
13-Aquamarine
February 3, 2026

My initial thought is maybe create a Timer for each machine that calls every maybe 5ish minutes. This timer will check the recent history for each property that is included in this alerting type to see if it has been out of range for X consecutive minutes. Not sure if this would be the best approach, however, so looking for other potential ideas

Rocko
Rocko19-Tanzanite
19-Tanzanite
February 4, 2026

That's a use case for TWX Analytics, Property Transforms or Descriptive Services. Read into the topic here:

https://community.ptc.com/t5/IoT-Tech-Tips/Descriptive-Services-or-Property-Transforms-which-approach-to/m-p/651161#M1527

https://support.ptc.com/help/thingworx/analytics/r10/en/#page/analytics/descriptive_analytics/da_overview.html#

https://support.ptc.com/help/thingworx/analytics/r10/en/#page/analytics/property_transform/pt_overview.html

 

An alternative might be to use the SPC Accelerator. 

https://community.ptc.com/t5/IoT-Connectivity-Tips/ThingWorx-Analytics-Training-Module-9-Part-3/ta-p/844190

 

 

J
JK_1074468213-AquamarineAuthor
13-Aquamarine
February 4, 2026

Thanks, I'll check this out. I have not used TWX Analytics too much yet so did not really consider that, is it fairly easy to learn quickly as you go?

Rocko
Rocko19-Tanzanite
19-Tanzanite
February 4, 2026

Note while this is also branded TWX Analytics, it's really an own module to be installed called Platform Analytics. It's a separate download.

The installation can be a bit tricky, but once you have it running, using it is pretty straightforward.

    N
    nmutter16-Pearl
    16-Pearl
    February 9, 2026

    There is an example from PTC using MultiEvent subscriptions

    Usecase 3: alert will be triggered if voltage is higher than 118V and it has last more than 3 minutes.

    UseCase 3 at https://support.ptc.com/help/thingworx/platform/r9.5/en/#page/ThingWorx/Help/Composer/Things/ThingSubscriptions/ThingSubscriptions.html 

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