摘要
介绍在SIMATICS7-300PLC控制系统中,利用对串口通信模块的软件编程,实现Modbus RTU master/slave通信的应用。实际生产应用表明,该方案在保证有效可靠的通信质量的同时,免除购买Siemens公司Modbus协议驱动模块的格外开销,具有值得推广的经济意义。
This paper describes the realization of Modbus RTU master/salve protocol based on SIMATIC S7-300 PLC point-to-point communication module. In a practical packaging control system, data is transmitted reliably and effectively. The scheme is worth promoting economic significance, for avoiding the expense of Siemens driver module of Modbus protocol.
出处
《计算机工程》
CAS
CSCD
北大核心
2009年第11期254-255,259,共3页
Computer Engineering
