serial communications interface

Instrumentation connects to this host through the General Purpose Interface Bus ( GPIB ) or RS-232 serial communications.

主机通过通用界面总线 GPIB (通用接口总线 ) 或RS -232 连载通信.

The Serial Real-time Communications Standard ( SERCOS) interface protocol is the unique international standard applied to numerical controls and drivers, and it has been widely used worldwide.

SERCOS接口是用于数控系统和数字式伺服驱动器之间通信的唯一国际标准，目前已经在世界范围内得到广泛应用；

Secondly, the communications flow of computer is introduced according to the analysis of serial communication protocols. And the protocols between computer's serial port and controller's communication interface are encapsulated as Dynamic Link Libraries in order to be applied to application.

接着，通过对系统串行通信协议的分析，介绍了上位机的通信流程，并把PC机串口与控制器通讯接口部分之间的协议封装成动态链接库的形式，供上层应用程序调用。