PS内部的Flash EPROM 提供220多种功能模块(控制算法子程序),除IEC 61131 3标准规定的基
本内容外,还扩充了许多来自于实际工程应用、且功能强大并经过严格测试的功能块。任何复杂控制
方案均可由这些功能块组合实现。
系统提供的功能块主要有以下几大类:
o
模拟量处理
o
数字量处理
回路调节
逻辑顺序控制
c
逻辑运算
监视功能
采集功能.
c
算术运算
c
TCP/IP协议通讯接口
Modbus协议通讯接口
1EC870-5协议通讯接口(Telecontrol)
4.2现场控制器 PS
Industr ial”现场控制器PS是- -种特殊的过程控制站,它内嵌了现场总线通讯接口,为用户使用
现场总线技术提供了很灵活的选择。
equipment (PROFIBUS, FOUNDATION Fieldbus,
HART, etc.) and device parameter settings.
● Automatic generation of global data between the process control station and the operator station
According to communication.
For field devices, process control stations and operator stations, a unified global database is used for the entire control system, thereby reducing
cost and time investment in establishing data communication and interactive access.
And ensure the consistency of data throughout the system.
●Provide system-wide unified inspection of user applications, overriding
from process control stations, operator stations to intelligent field devices,