Method for realizing SCPI communication based on TCP

The invention relates to a method for realizing SCPI communication based on a TCP (Transmission Control Protocol), which is used for realizing SCPI instruction communication between an upper computer and a board card in ATE (Automatic Train Equipment). The method comprises the steps that in an upper computer, a TCPClient class of a client is packaged on the basis of a C + + language, and the TCPClient class serves as an SCPI communication module of upper computer testing software; through communication between the SCPI communication module and the board card, reliable transmission of the SCPI instruction is achieved, and the board card information is accurately obtained. Therefore, the upper computer and the board card can carry out SCPI instruction communication, that is, ATE test software can accurately send the SCPI instruction to the board card, the board card receives the instruction and returns corresponding board card information to the upper computer, even if errors of connection, sending or receiving