topic Re: Alert for if value is outside limits for 30 minutes straight in ThingWorx Developers

Alert for if value is outside limits for 30 minutes straight

JK_10744682 — Tue, 03 Feb 2026 21:06:13 GMT

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?

Re: Alert for if value is outside limits for 30 minutes straight

JK_10744682 — Tue, 03 Feb 2026 21:49:29 GMT

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

Re: Alert for if value is outside limits for 30 minutes straight

Rocko — Wed, 04 Feb 2026 09:42:42 GMT

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

Re: Alert for if value is outside limits for 30 minutes straight

JK_10744682 — Wed, 04 Feb 2026 13:02:59 GMT

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?

Re: Alert for if value is outside limits for 30 minutes straight

Rocko — Wed, 04 Feb 2026 13:21:16 GMT

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.

Re: Alert for if value is outside limits for 30 minutes straight

nmutter — Mon, 09 Feb 2026 09:50:09 GMT

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

Re: Alert for if value is outside limits for 30 minutes straight

slangley — Tue, 17 Feb 2026 20:33:03 GMT

Hi @JK_10744682

If you feel your question has been answered, please mark the appropriate response as the Accepted Solution.

Regards.

--Sharon