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Dynamic limits in custom sensor




Is it possible to make my custom sensors Warning/Error limit to refresh after every scan of the sensor? To be exact: I wrote a custom EXEXML sensor for Disk Free monitoring - which sets the Warning limit to 10GB for a 100GB volume and sets 50GB warning limit for a 2TB volume.

As far as i know, LimitMinWarning etc elements "will be considered only on the first sensor scan" https://www.paessler.com/manuals/prtg/custom_sensors

For initial scan, it is OK for me - but for example, if I extend my 100GB volume to 2TB, I want PRTG to automatically adjust the Warning limit to 50GB (as it is returned in the XML channel setting).

Is it possible? Thank you in advance,


custom-sensor exexml prtg

Created on May 22, 2019 2:09:58 PM

3 Replies




Unfortunately, it is only possible to adjust the sensor channel limits manually after the initial sensor creation.

Best regards,

Created on May 23, 2019 3:15:57 PM by  Sebastian Kniege [Paessler Support]




Well, you can use the API to set channel limits.

You could considder altering the channel limits when the channel value has changed using a 'change' trigger that fires a custom notification, or make this a part of your custom sensor.

Example API call would be:


See also setting-limits-for-sensor-in-bulk-or-via-api (topic 67764)

Sensors | Multi Channel Sensors | Tools | Notifications

Kind regards,

[[http://prtgtoolsfamily.com]] PRTG Tools Family

Created on May 25, 2019 11:53:57 AM



Thank you very much for the advice, I will give it a try.

Regards, Daniel

Created on May 30, 2019 8:12:49 AM

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