I followed the document to tried the motor arming.
Http://ardupilot.org/copter/docs/arming_the_motors.html
However, it did not work and I tried it by pressing the 'ARM' button on the 'ACTOINS' tab in the APM Planner.
If press the button, the following error occurs:
As far as I know this is no problem. The command informs the GCS about the UAV being disarmed / or armed. See here. So nothing to worry about - the command is not implemented correctly.
I followed the document to tried the motor arming. Http://ardupilot.org/copter/docs/arming_the_motors.html However, it did not work and I tried it by pressing the 'ARM' button on the 'ACTOINS' tab in the APM Planner. If press the button, the following error occurs:
Why do I get this error? How can I solve this?