摘要
化工精馏塔控制系统以SIEMENS公司的S7-300 PLC作为数据采集及控制单元,配合各种检测和控制设备对温度、压力、流量等检测量进行数据采集,在PLC程序中用PID对检测量进行调整。上位机通过西门子的上位监控软件WinCC和PLC进行数据交换,从而实现集中控制。
Taking the practice in a chemical factory as an example,a monitor system which employs Siemens S7-300 PLC as the data collection and control unit for the chemical rectification column was designed to collect temperature,pressure and flow data and then has them modified with PID in PLC program.The principal PC exchanges data with each station through the WinCC to achieve a centralized control.
出处
《化工自动化及仪表》
CAS
北大核心
2011年第6期710-712,共3页
Control and Instruments in Chemical Industry
