Update device without logging when no state change

[leejoow]

I've created a Python plugin for my Daikin airco.

Every minute my aircondition is unit is polled for the settings and are updated on the devices. Everything is recorded into the database, whereas I would like only the state changes to log. If I do not update the device, the device turns red because the Last Seen turns red. Is it possible to Update the Last Seen, without logging the setting?