主变冷却系统智能控制装置的测试软件设计

The Design of The Measuring Software of A Main Transformer of Cool System Intelligent Control Equipment

使用PC的串行通信端口与PLC进行通信,实现对主变压器的冷却控制、实时处理返回的数据并判断当前主变压器冷却系统状态的过程。阐述了使用VB可视化编程软件作为开发平台,结合ActiveX控件,利用MSComm控件对串口进行通信的方法。

This paper introduce new method of communicate between PC （Personal Computer） of serial communication prot and PLC （Programmable logic controller） and makes cool control to main transformer, deals with return data in real time and judges current state of main transformer of cool system,and disusses using VB visible programming software as developing platform integrating ActiveX control,which adopts MSComm control for serial communication.