CAN bus is the standard communication bus of most automobiles at present, and it has also been applied in many fields, such as tram control, fire control host networking and so on, and has broad development prospects. If you want to learn the knowledge of CAN bus, you need to buy special books for systematic study. But if you just want to use some tools such as CAN bus analyzer, you CAN master some basic knowledge of CAN, such as installing a 120 ohm resistor between the two farthest nodes of CAN bus, where CAN is high and CAN is low. Don't misunderstand. When connecting CAN devices, the baud rates of both parties should be set consistently, and so on. As for the frame ID frame data, we should know something about it in order to make better use of related tools. In case of doubt, please visit GCGD official website for specific consultation.