Method for communicating main control boards and network equipment

The invention provides a communication method between main control boards and network equipment, and the method comprises the steps: connecting the RX end of a first UATR module in a first main control board with a first CPLD module, connecting the TX end of the first UATR module in the first main control board with a second CPLD module, connecting the RX end of a second UATR module in a second main control board with a third CPLD module, and connecting the TX end of the second UATR module in the second main control board with a fourth CPLD module, the first CPLD module is connected with the fourth CPLD module, the second CPLD module is connected with the third CPLD module, and serial port connection between the first main control board and the second main control board is achieved through connection between the first CPLD module and the fourth CPLD module and connection between the second CPLD module and the third CPLD module. By means of the method, serial port information interaction between the main contr