Of course, using the differential transmission method also does not allow you to sit back and relax. CAN bus is often used for long-distance communication. With the increase of cable length, various interferences are coupled to the bus through the cable, which greatly increases the probability of external interference to the bus communication. If the cable is improperly selected and used, it is very likely to cause Communication exception. For CAN bus applications, we generally recommend using twisted pair. In addition to a two-wire CAN, there is also a single-wire CAN (Single Wire CAN). Single-wire CAN can reduce one transmission line, but requires good common ground characteristics between nodes (equivalent to the second signal line).