摘  要：本文利用VB軟件開發虛擬控制對象，利用協議轉換模塊建立VB與PLC間 交互通信機制，從而實現PLC對虛擬控制對象的常規實驗控制和程序驗證，最終建立 一套完整虛擬仿真實驗項目。 關鍵詞：PLC  VB  虛擬控制對象 Abstract: Virtual control objects are designed by using the VB software in this paper. An interaction and communication mechanism between VB and PLC is established by using the protocol conversion module. The conventional experimental control and program verification c[登陸后可查看全文]