Engine hours (e/h) is the duration of engine being on, while trips/stops/parkings are connected with movement status. So you should expect them to give 24 hours as a sum.
There can be e/h with no movement (idling) and movement with no e/h (when e/h counter is set up wrong). Also stops are the part of trips.
Yes, I understand, however it is not resulting in 24 hours because there is intervals which the vehicle has the engine on but it's been considering parking or stops too, in the screenshots I've sent before. Even the sum of trip + parkings + stops isn't resulting the right value.
If trip detector is set up to engine ignition sensor and no additional GPS filtration is turned on, then parkings are detected when ignition is off.
Every unit tracked in our user has the trip detector set to ignition sensor, minimum speed 1 km/h and parks above 300 seconds.
The information of engine off is very used here. Many companyes works almost 24 hours a day (in three shifts) and the vehicles must have the engine on almost the whole time, so they use the opposite value: engine off instead of engine on.
Technical Support, Rastreasul