MBUS communication circuit and MBUS communication system

The embodiment of the utility model provides an MBUS communication circuit and an MBUS communication system. Relating to the field of power equipment, the MBUS communication circuit comprises an MBUScommunication module, a signal processing module and a communication module, a first photoelectric isolation circuit, a second photoelectric isolation circuit and an MBUS interface circuit, wherein the first photoelectric isolation circuit is configured to send data from a signal transmitting end of an electric meter MCU to the meter reading controller through the MBUS interface circuit, and the MBUS interface circuit is configured to transmit an instruction of the meter reading controller to a signal receiving end of the electric meter MCU through the second photoelectric isolation circuit. Therefore, according to the technical scheme provided by the embodiment of the utility model, through photoelectric signal isolation and the design of the interface circuit, the external strong currentattack prevention capabil