一种计算机并行数据通讯的解析与监听

讨论了对Siemens R30计算机间并行数据通讯的解析与监听系统设计实现问题.通过解析并行数据通讯协议及线序和对监听系统的硬件电路设计及软件设计,实现了对SiemensR30计算机间的并行通讯监听和由基于Windows系统下的PC机向Siemens R30计算机的报文发送.系统的硬件电路由接收接口电路、光电隔离电路、CPLD控制电路和单片机控制电路四个主要部分组成;软件部分由CPLD程序、单片机程序和微机程序三个主要部分组成,微机程序采用了报文信息接口AMI(Alarm Message Interface)消息机制进行数据分发.该监听系统在某冷轧厂在线投入,运行稳定可靠,满足了研发需要.

Decoding and Monitoring a Parallel Data Communication Between Computers

The design and implementation of a system to decode and monitor the data of parallel communication between Siemens R30 computers are discussed.By decoding the communication protocols and line orders,with the designing hardware electrocircuits and software designed,a system is implemented to monitor the parallel communication between Siemens R30 computers and send messages to Siemens R30 computers from PCs based on Windows.The hardware electrocircuits are mainly composed of four parts for receiving,photoelectric isolation,CPLD control and single chip control electrocircuit.The software is composed of three modules,i.e.,CPLD, single chip and microcomputer module where the alarm message interface(AMI) mechanism is applied to data distribution.This monitoring system has been put into on-line operation in a cold-rolling mill and proved stable and reliable and available to meet R&D needs.