Wireless communication module of programmable logic controller

The utility model discloses a wireless communication module of a programmable logic controller, comprising a housing, a cover plate state detection switch, a microprocessor, a main power supply, a wireless communication circuit, and an interface circuit communicating with the controller. The microprocessor, the main power supply, the wireless communication circuit, and the interface circuit connected with the controller are installed in the sealed housing, which comprises a cover plate; the cover plate state detection switch is installed in the housing and is located behind the cover plate; and the signal output end of the cover plate state detection switch is connected to the signal input end of the microprocessor. The wireless communication module of the programmable logic controller in the utility model has anti-disassembly function, can prevent users from maliciously disassembling the module and thus ensure the normal operation of a communication system. Manufacturers can carry out shutdown operation on e