# 5 Q\&A

#### Q：BUNKERPRO is started normally, but why does it not move when using the remote control to control the vehicle body?

A：First, confirm whether the power switch is pressed; and then, confirm whether the control mode selected through the mode selection switch on the upper left side of the remote control is correct.

#### Q: The BUNKERPRO remote control is normal; the chassis status and movement information feedback is normal; but why can’t the vehicle body’s control mode be switched, and why does the chassis not respond to the control frame protocol when the control frame protocol is issued?

A: Under normal circumstances, if BUNKERPRO can be controlled by the remote control, it means that the chassis movement control is normal; if it can receive the feedback frame of the chassis, it means that the CAN extension link is normal. Please check whether the command is switched to can control mode.

#### Q: When communicating through the CAN bus, the chassis feedback command is normal; but why does the vehicle not respond when issuing control?

A: BUNKERPRO has a communication protection mechanism inside. The chassis has a timeout protection mechanism when processing CAN control commands from the outside. Suppose that after the vehicle receives a frame of communication protocol, but it does not receive the next frame of control command for more than 500MS, it will enter the communication protection, and its speed is 0. Therefore, the commands from the host computer must be issued periodically.
