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Does anyone know of a simple way to get the change of angle in between two fixes sent back as a figure in such away I can get it to trigger an event on the host server please? The fix is sent every 30 seconds and I appreciate the unit could turn 180 degrees and then back again by say  190 degrees between those two points showing just a 10 degree change. The unit is an FMB204.

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Hello.

You can configure Min Angle parameter in Data Acquisition settings to define threshold angle that will cause a record to be generated:

https://wiki.teltonika-gps.com/view/FMB204_Data_acquisition_settings

Regards
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Thanks for the response, yes I did know that but I cannot see a way to send that back as an event different from all the other fixes coming back.

If you imaging a ship traveling in a straight line for say an hour, I have no real interest in this apart from knowing where it is and that it is moving in the right direction. What I need is to highlight it and trigger a warning on the server when it suddenly changes direction by say greater than 25 degrees?

Therefore I am looking for a way to trigger a separate message from the FMB204 when that happens.
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Hello.

Device will not generate an event with angle change. The solution is to check angle on your server side and generate notification when threshold is exceeded.
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That is what i feared, but thank you for confirming Janusz.