Solenoid valves communication system using VB6. 0, control to realize the serial communication, the initialization is set to / 9, 600, 0, 8, 10, the fuel shut off solenoid valve is: the baud rate for 9, 600 b/s and odd parity, 8 data bits, stop bit.After the project form embedded communication MSComm control, in order to use this control to control a serial port communication operation, have to insert the control in the application.For application of a dialog box for this insert solenoid fuel valve control.