摘要
介绍了西门子PLCS7-200在自由端口模式下与计算机进行串行通信的方案,给出了上位机程序和下位机程序,通过一具体实验进行了验证。实验表明该方案简单可靠,有一定的实用价值。
This paper introduces a series communication between S7-200 programmable logic controller and personal computer in the mode of free port. It provides the program, which is confirmed by a material experimentation on top computer and PLC. The project is very reliable and has some application value.
出处
《机床电器》
2005年第4期30-32,36,共4页
Machine Tool Electric Apparatus
