Arduplane FS logic understand

I am doing bench test of THR _FS functions as documents says here:Plane Failsafe Function — Plane documentation

I have the following FS setting

Throttle armed in Qstabilize mode and RC turned off then its execute the FS_SHORT_ACT to QLAND.
02-03-2022 15:48:51 : Failsafe. Long event off: reason=3
02-03-2022 15:48:51 : Throttle failsafe off
02-03-2022 15:47:15 : Flight mode = 20
02-03-2022 15:47:15 : Failsafe. Long event on: type=2/reason=3
02-03-2022 15:47:13 : Throttle disarmed
02-03-2022 15:47:13 : Land complete
02-03-2022 15:47:05 : Flight mode = 20
02-03-2022 15:47:05 : Failsafe. Short event on: type=1/reason=3
02-03-2022 15:47:05 : Throttle failsafe on
02-03-2022 15:46:56 : Throttle armed

Again i just armed and flight mode changed to FBWA then turned off RC transmitter then i got follow messages.
02-03-2022 15:50:51 : Throttle disarmed
02-03-2022 15:50:22 : Flight mode = 11
02-03-2022 15:50:22 : Failsafe. Long event on: type=2/reason=3
02-03-2022 15:50:12 : Flight mode = 1
02-03-2022 15:50:12 : Failsafe. Short event on: type=1/reason=3
02-03-2022 15:50:12 : Throttle failsafe on
02-03-2022 15:50:01 : Transition airspeed wait
02-03-2022 15:49:57 : Throttle armed

can any one explain what is the type/reason clearly says?
always why Short event on: type=1/reason=3 and Long event on: type=2/reason=3?

So, these are the reasons.
I think these are the types.

Before long event, short event fires.

1 Like

@Mustafa_Gokce Thank you so much now i really understood what happening and why…

arduplane have the function like FS_OPTIONS that Arducopter has?
because in auto mode i don’t use RC,so i can set the bitmask value as i want.