Plug-and-play in-cabinet networking strategy

The invention discloses a plug and play in-cabinet networking strategy. In order to solve the problem that plug-and-play cannot be realized due to mixed plugging and misplug of normal Ethernet communication interfaces in the existing networking strategy and difficulty in recording corresponding allocation addresses of slaves, the method comprises the following steps of: defining pins of interfaces of power supply equipment and power application equipment; a mixed insertion protection circuit is arranged in the power supply equipment to judge the mixed insertion condition and correct pin configuration; a host is deployed in the cabinet and is connected to the server, and the slave is connected with the host through a network cable to complete networking configuration of the field equipment; after configuration is completed, the host sets a default address of the slave equipment and sends a query instruction to the default address, the slave judges the busy state of the bus and sends a reply instruction to the