摘要
自由口通信是S7-200 PLC的突出特点,在有些无法实现有线通信的地方,S7-300PLC、S7-200 PLC之间就可以采用无线数传电台方式实现无线通信。该文详细说明了西门子S7-300 PLC、S7-200 PLC在自由口模式下的无线通信设计。主要包括系统的硬件构成,自由口通信端口程序设计,数传电台选型及通信参数设置。该系统运行稳定可靠,通信方案经济、灵活,程序可移植性强,对于类似项目具有一定的借鉴意义。
Free port communication is the outstanding characteristic of S 7-200 PLC, some can not realize the wired communication place , S7-300 PLC and S7-200 PLC can use the wireless data trans-mitter -receiver wireless communication .This paper details the design of wireless communication be-tween Siemens S7-300 PLC and S7-200 PLC in the free port mode .Mainly consists of the hardware of the system , the free port communication port programming , set the data transmission radio selection and communication parameters . The system is stable and reliable , economic , flexible communication scheme , program portability , has a certain reference for similar project .
出处
《工业仪表与自动化装置》
2014年第1期75-77,共3页
Industrial Instrumentation & Automation
