摘要
分布式测控系统中，上下位机相距较远，采用RS-422标准通信卡设计相应通信程序即能实现较远距离的通信．本文所采用的RS-422通信卡使用的是16C550异步通信接口芯片，通过对16C550的说明来介绍该通信卡的设置方式、零调制情况下程序设计步骤和方法。
Control computer is far away from controlled apparatus in distributing measuring control system. Farther communication was realized by designing correspondence communication program by using RS-422 standard communication card. The elucidation for RS-422 for adopting asynchronism communication chip 16C550.
出处
《导航》
2006年第1期112-116,共5页
关键词
异步通信芯片
串行通信
RS-422通信卡
Asynchronism Communication Chip
Serial Communication
RS-422Communication Card
