Furuno NAVpilot-500 Operator's Manual page 31

3. STEERING MODES
FU is one of manual steering modes, which outputs an absolute value
determined with the [ENTER] knob to drive the rudder, thus changing the ship's
course at a given rate of change towards a set point. One click of button
changes the course by a definite step.
2. Rotate the dial on the remote controller to steer the rudder.
The angle must be more than 10°, otherwise no steering occurs.
3. When you terminate the REMOTE mode, turn off the remote controller.
The control is returned to the control unit and the previously used mode (AUTO
or NAV) is restored. For the NAV mode, the boat will go to the destination
waypoint set using a sailing method (COURSE or XTE) depending on your menu
selection.
3-12
Rotating dial
Turning power off (dial type)