COMMUNICATION METHOD, REFRIGERATION AND AIR CONDITIONING-RELATED SYSTEM, AND COMMUNICATION NODE

原文（中文）

A communication method for communicating data regarding a change in state of a refrigeration and air conditioning-related unit between a plurality of communication nodes, in which a first communication node generates a message including information regarding a timing at which, when a second communication node detects a change in state, the second communication node transmits data to a communication node to which the data is to be transmitted, transmits the message generated to the second communication node, generates a message, and transmits the message generated to the second communication node.