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Commander: unify RC loss and data link exception options

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This commit is contained in:
Matthias Grob
2026-01-09 17:45:40 +01:00
committed by Silvan Fuhrer
parent ec6dd286fc
commit b5846fd8c2
4 changed files with 63 additions and 76 deletions
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docs/en/config/safety.md
+5 -9
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@@ -128,14 +128,15 @@ Additional (and underlying) parameter settings are shown below.
| Parameter | Setting | Description |
| ----------------------------------------------------------------------------------------------------- | --------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <a id="COM_RC_LOSS_T"></a>[COM_RC_LOSS_T](../advanced_config/parameter_reference.md#COM_RC_LOSS_T) | Manual Control Loss Timeout | Time after last setpoint received from the selected manual control source after which manual control is considered lost. This must be kept short because the vehicle will continue to fly using the old manual control setpoint until the timeout triggers. |
| <a id="COM_RC_LOSS_T"></a>[COM_RC_LOSS_T](../advanced_config/parameter_reference.md#COM_RC_LOSS_T) | Manual Control Loss Timeout | Time after last setpoint received from the selected manual control source after which manual control is considered lost. This must be kept short because the vehicle will continue to fly using the last known stick position until the timeout triggers. |
| <a id="COM_FAIL_ACT_T"></a>[COM_FAIL_ACT_T](../advanced_config/parameter_reference.md#COM_FAIL_ACT_T) | Failsafe Reaction Delay | Delay in seconds between failsafe condition being triggered (`COM_RC_LOSS_T`) and failsafe action (RTL, Land, Hold). In this state the vehicle waits in hold mode for the manual control source to reconnect. This might be set longer for long-range flights so that intermittent connection loss doesn't immediately invoke the failsafe. It can be to zero so that the failsafe triggers immediately. |
| <a id="NAV_RCL_ACT"></a>[NAV_RCL_ACT](../advanced_config/parameter_reference.md#NAV_RCL_ACT) | Failsafe Action | Disabled, Loiter, Return, Land, Disarm, Terminate. |
| <a id="COM_RCL_EXCEPT"></a>[COM_RCL_EXCEPT](../advanced_config/parameter_reference.md#COM_RCL_EXCEPT) | RC Loss Exceptions | Set the modes in which manual control loss is ignored. |
| <a id="COM_RCL_EXCEPT"></a>[COM_RCL_EXCEPT](../advanced_config/parameter_reference.md#COM_RCL_EXCEPT) | RC Loss Exceptions | Set modes in which manual control loss is ignored. |
## Data Link Loss Failsafe
The Data Link Loss failsafe is triggered if a telemetry link (connection to ground station) is lost.
The Data Link Loss failsafe is triggered if the connection to the last MAVLink ground station like QGroundControl is lost.
Users that want to disable this failsafe in specific modes can do so using the parameter [COM_DLL_EXCEPT](#COM_DLL_EXCEPT).
![Safety - Data Link Loss (QGC)](../../assets/qgc/setup/safety/safety_data_link_loss.png)
@@ -145,12 +146,7 @@ The settings and underlying parameters are shown below.
| ---------------------- | ------------------------------------------------------------------------ | --------------------------------------------------------------------------------- |
| Data Link Loss Timeout | [COM_DL_LOSS_T](../advanced_config/parameter_reference.md#COM_DL_LOSS_T) | Amount of time after losing the data connection before the failsafe will trigger. |
| Failsafe Action | [NAV_DLL_ACT](../advanced_config/parameter_reference.md#NAV_DLL_ACT) | Disabled, Hold mode, Return mode, Land mode, Disarm, Terminate. |
The following settings also apply, but are not displayed in the QGC UI.
| Setting | Parameter | Description |
| ----------------------------------------------------------- | -------------------------------------------------------------------------- | ---------------------------------------------------- |
| <a id="COM_DLL_EXCEPT"></a>Mode exceptions for DLL failsafe | [COM_DLL_EXCEPT](../advanced_config/parameter_reference.md#COM_DLL_EXCEPT) | Set modes where DL loss will not trigger a failsafe. |
| <a id="COM_DLL_EXCEPT"></a>Mode exceptions for DLL failsafe | [COM_DLL_EXCEPT](../advanced_config/parameter_reference.md#COM_DLL_EXCEPT) | Set modes in which data link loss is ignored. |
## Geofence Failsafe