There is a topic already about it. We notice the same, that Ignition On Counter (449), is just does not work properly. It uses its value and starts to count from a random number:
I have checked the data shared. The Ignition ON counter values are calculated in seconds. Once the ignition status turns ON, the device starts counting and monitoring the total duration for which the ignition remains ON.
Hence, the values depend on the complete time period during which Ignition was 1. You are requested to verify the data starting from the exact timestamp when AVL ID 239 first became 1, and then perform the comparison.
If the issue still persists, please open a support ticket so we can analyze the data more effectively. For precise validation, it is recommended to review the data in seconds and milliseconds while monitoring AVL ID 239.
As we understand Ignition ON counter is a global value which get saved even when we disconnect ignition signal, and even power off and power on again. At least thats our experience when we tested it, and on purpose disconnected the ignition signal and also powered off more than 10 minutes. It saved the last value and started to count from there.
But then over time it just randomly (or I would say we do not why) drops value, and start to count from there again.
For now we just use for ignition signal the power, so should be stable.
Can you please cleare what is the proper/desinged way this value should work?
We would like to use it (or any other suitbale parameter), for working hours counter.
If the device has started behaving abnormally, there is a possibility that the ignition detection values are fluctuating . You can verify this by checking the server data reports for AVL ID 239 and confirming whether continuous switching between 0 and 1 is being observed.
If such fluctuations are present, they could be the reason for the reported behavior.
However, to properly analyze and identify the root cause of this fluctuation (if it exists), we recommend opening a support ticket , as this will allow us to investigate the issue in more detail.
Engine Hours Configuration
For calculating accurate engine operation hours , your approach of using external power voltage as the ignition source is correct. Please note that:
Once external voltage is selected as the ignition source, no other ignition source should be used in parallel
The voltage range must be configured precisely
Typical voltage ranges when the engine is running are:
12V vehicles : 13,000 mV to 14,400 mV
24V vehicles : 25,800 mV to 28,400 mV
Selecting the correct voltage range based on the vehicle type will help achieve almost accurate engine hour calculations .
