← All tools

Message & Error Explainer

What an ArduPilot message means and what to do about it

Українська

A failsafe let the mission go on, because the landing is closer that way

InformationMissions, fence, rally points, terrainPlane only

What ArduPilot says:

A battery failsafe wanted to turn back or go to the landing approach, and ArduPilot kept flying the mission instead. With MIS_OPTIONS bit 1 set it adds up two distances: to the landing along the rest of the mission, and to the landing by way of the nearest DO_LAND_START. When carrying on is no longer than turning to DO_LAND_START, the mission goes on to its landing. The line is sent at the moment of that decision.

The sum counts waypoints only. A mission with a loiter that never ends, or with no landing after the current item, cannot be measured, and the failsafe then acts as usual.

Parameters to look at

ParameterWhat it is
MIS_OPTIONSMission options bitmask
RTL_AUTOLANDRTL auto land
BATT_FS_LOW_ACTLow battery failsafe action
BATT_FS_CRT_ACTCritical battery failsafe action
The code that sends it

Rejecting RTL: closer land if mis continued

libraries/AP_Mission/AP_Mission.cpp AP_Mission::is_best_land_sequence() · Open in ArduPilot Copter-4.7.1

Written here for Plane 4.6. In the tool you choose your vehicle and version, see your own parameter values beside the ones named here, and drop a flight log to have every message in it explained.

Open it in the Message & Error Explainer