摘要
介绍了本公司锡焊机中S7-200系列PLC与单片机进行通信的方法,包含通信设置,程序设计等。其中硬件以PLC为主机,单片机为从机,AT89C51单片机输出信号通过RS-485总线与S7-200系列PLC进行通信,并简单介绍了通信协议。
This paper introduces the tin welding machine S7-200 series PLC and microcontroller communication methods, including communication settings, program design. Its hardware takes PLC as host and microcomputer as slave. The AT89C51 microcontroller output signal communicates through the RS-485 bus and $7-200 series PLC.It introduces communication protocol simply.
出处
《自动化技术与应用》
2012年第12期112-115,共4页
Techniques of Automation and Applications
关键词
PLC
单片机
串行通信
PLC
microcoufuoller
serial communication
