In a feedback control system, a wide range of jitter in the sampling adjustment period corresponds to a change in the signal after delay, which may degrade or destabilize the system performance. In safety-related open-loop systems, jitter can cause confusion in the sequence of actions. Channel error blocking: The node may be temporarily or permanently disabled due to interference or other reasons. The faulty host will command the CAN transceiver to continuously send messages, which is the so-called Babbling ldiot error. Since the format, etc. of this information are all legal, CAN has no mechanism to handle this situation.