由组态软件、智能仪表及PLC等组成的工业控制系统

介绍的工业控制系统由上位机及下位机系统组成，包括2台可编程逻辑控制器(可扩至16台)，2台智能仪表(可扩至64台)，3台远程数据采集模块(可扩至256个)。简述了控制系统硬件组成及功能，下位机用于设备的开关控制、温度、压力、流量、液位等过程量的监视和控制。上位机装有组态监控软件(MCGS)，主要可以集中监控系统模拟量和开关量。详述了下位机参数设置、上位机组态软件的设置及功能。用真空冷冻干燥设备中使用该控制系统的实例，说明设计的工业控制系统具有可靠性高、实用、性能好的特点。

Industrial control system composed of configuration software, intelligent instrument and PLC

The introduced industrial control system consists of superordinate computer and subor-dinate system,including 2 PLCs(expandable to 16),2 intelligent instruments(expandable to 64) and 3 remote data acquisition modules(expandable to 256). Its hardware architecture and functions are described briefly. The subordinate system monitors the process variables,such as temperature,pres-sure,flow,liquid,level,switch status and so on. With MCGS(Monitor and Control Generated Sys-tem),the superordinate computer supervises the analog and binary values centrally. Together with the parameter setting of subordinate system,the software configuration of the superordinate computer and its functions are expounded. Its application in vacuum-refrigerating dryer shows it reliable and practical.