1771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL2531771-CX20自动化AB控制器IC697MDL253

控制算法丰富，集连续控制、顺序控制和批处理控制于一体，可实现串级、前馈、解耦、自适应和预测控制等****控制，并可方便地加入所需的特殊控制算法。DCS的构成方式十分灵活，可由*的管理计算机站、操作员站、工程师站、记录站、现场控制站和数据采集站等组成，也可由通用的服务器、工业控制计算机和可编程控制器构成。

处于底层的过程控制级一般由分散的现场控制站、数据采集站等就地实现数据采集和控制，并通过数据通信网络传送到生产监控级计算机。生产监控级对来自过程控制级的数据进行集中操作管理，如各种优化计算、统计报表、故障诊断、显示报警等。随着计算机技术的发展，DCS可以按照需要与更*的计算机设备通过网络连接来实现更*的集中管理功能，如计划调度、仓储管理、能源管理等。

结构

从结构上划分，DCS包括过程级、操作级和管理级。过程级主要由过程控制站、I/O单元和现场仪表组成，是系统控制功能的主要实施部分。操作级包括：操作员站和工程师站，完成系统的操作和组态。管理级主要是指工厂管理信息系统（MIS系统），作为DCS更高层次的应用，目前国内纸行业应用到这一层的系统较少。

DCS的控制程序：DCS的控制决策是由过程控制站完成的，所以控制程序是由过程控制站执行的。

过程控制站的组成：

DCS的过程控制站是一个完整的计算机系统，主要由电源、CPU（*处理器）、网络接口和I/O组成

I/O：控制系统需要建立信号的输入和输出通道，这就是I/O。DCS中的I/O一般是模块化的，一个I/O模块上有一个或多个I/O通道，用来连接传感器和执行器（调节阀）。

I/O单元：通常，一个过程控制站是有几个机架组成，每个机架可以摆放一定数量的模块。CPU所在的机架被称为CPU单元，同一个过程站中只能有一个CPU单元，其他只用来摆放I/O模块的机架就是I/O单元。

DCS在污水处理过程中的应用

原有的污水处理控制系统由SBR反应池PLC和现场显示仪表组成，其中PLC由于使用的时间较长，故障率明显增高，以至于控制主要由工艺人员手动完成，并且因为现场环境的恶劣，现场仪表多被腐蚀，运行不稳定，已经影响了污水处理系统的稳定运行。****终选用了浙大中控JX300XDCS来对控制系统进行更新改造，并更换了现场变送器。

Actuator Sensor Interface 2I/20 Application module
3RG9001-0AA00
 Actuator Sensor Interface 2I/20 Application module
3RG9001-0CC00
 AS-I Power 3A AC120V/230V
3RX9501-0BA00
 AS-Interface compact module K45, 4DI, max.200mA, PNP
3RK1200-0CQ20-0AA3
 AS-Interface FK Interface Module
3RG9010-0AA00
 AS-Interface FK Interface Module
3RG9030-0AA00
 AS-Interface Module 4DI/DO 24 VDC
3RG9002-0DA00
 AS-Interface Module 4DI/DO 24VDC
3RG9004-0DB00
 AS-Interface Power Supply
3RX9307-0AA00
 AS-Interface Slimlinemodule S45 230VUC
3RK1402-3CE00-0AA0
 ET200X BM142 4DO 24VDC 2A
6ES7142-1BD10-0XB0
6ES7142-1BD11-0XB0
6ES7142-1BD22-0XB0
 S7-300 ASi CP
6GK7342-2AH01-0XA0
 SITOP Power 2,4 ASI 24VDC 30VDC 2,4A
6EP1632-1AL01
 TK-REL-790702
 CP MPI/PROFIBUS DP floating
C79458-L7000-B315
 DF30-PG
DF30
 Equinox SST-4/8P Multiport Serial Co*oller Card PCI
950357-002
 HUB AUI Ce*e COM 1600 16 Ports
Allied_Telesis_AT1600
 HUB AUI - Digital Delni 8 Ports
Delni_AB
 keyboa*erman with DIN-plug
S26381-K89-V122
 SICOMP SMP-E223-A2
C8451-A12-A68
 SIMATIC ower Supply 24VDC 105W
A5E00100846
 SIMATIC ower Supply with Sense 24VDC 85W
A5E00166828
 * MO-Drive 1,3GB 5,25''
SMO-F531
 Streamer 1GB TD120
S26361-H221-V100
 Hilscher ISA CIF30DPS Profibus-DP Sl*e fieldbus card
HIL-CIF30-DPS
 OLM - Profibus P11
6Gk1502-2CA10
 OLM-Profibus P12 V3.1
6GK1502-3CA10
 S7-300 CP343-5 PROFIBUS FMS
6GK7343-5FA01-0XE0
 S7-400 IM467 Profibus DP
6ES7467-5GJ02-0AB0
 SINEC L2 Bus Connector
6ES5762-2AA21
 SINEC L2 Bus Connector with PG socket
6ES7972-0*20-0XA0
 15V Supplementary Module
6ES5956-0AA12
6ES5956-0AA11
 726-8 cable for CP524/CP525/CP544
6ES5726-8CB60
 Allied Telesyn AT-2000U-PNP NIC Ethernet
AT2000U_PNP
 Buskoppler
6GK1901-0AA00-0AA0
 Buskoppler 2SS / Interface
6GK1901-0AA00-0AC0
 Busterminal 12M 1.5m
6GK1500-0AA10
 Busterminal L1
6ES5777-0*01
6ES5777-0*00
6ES5777-0BC00
6ES5777-0BC01
6ES5777-1BC00
6ES5777-1BC01
 Busterminal RS485 1,5m
6GK1500-0DA00
 Busterminal RS485 1,5m
6GK1500-0AA00
 Busterminal RS485 3m
6GK1500-0AB00
 Busterminal SINEC LE1
8SX8503-0AB01
8SX8503-0AB00
 Cable 721-1 15-15pin.
6ES5727-1BD20
 Cable CP143 - PG
6ES5725-0AK00
 Canbu*aster Unit FEM1
FEM1
 Ce*e COM 210T 15pin RJ45
AT-210T
 Ce*e COM 210TS 15pin RJ45
AT-210TS
 Ce*e COM MX10
AT-MX10
 Ce*e COM MX10S 15pin BNC
AT-MX10S
 Coax connector f. Ethernet
6ES5755-4AA11
 CP1410
6GK1141-0AA00
 CP143
6GK1143-0AB00
6GK1143-0AB01
 CP143
6GK1143-0AA01
6GK1143-0AA00
 CP1430 TCP
2XV9450-1AU00
 CP1430 TF Basic
6GK1143-0TA00
6GK1143-0TA01
6GK1143-0TA02
 CP1430 TF Extended
6GK1143-0TB00
6GK1143-0TB01
 CP1473 MAP
6GK1147-3MA00
 CP1511
6GK1151-1AA00
 CP1512
6GK1151-2AA00
 CP1613
6GK1161-3AA00
6GK1161-3AA01
 CP2430
6GK1243-0SA20
 CP2430
6GK1243-0SA10
 CP2430
6GK1243-0SA00
 CP2433
6GK1243-3SA00
 CP523
6ES5523-3UA11
 CP524
6ES5524-3UA13
6ES5524-3UA15
 CP525
6ES5525-3UA11
6ES5525-3UA21
 CP530
6ES5530-7LA11
6ES5530-7LA12
 CP530
6ES5530-3LA11
6ES5530-3LA12
 CP535
6ES5535-3MA12
 CP535
6ES5535-3LB11
6ES5535-3LB12
 CP536
6ES5536-3LA12
 CP5411
6GK1541-1AA00
 CP5412-A1
C79458-L2363-A1
 CP5412-A2 (C79458-L9006-B1)
6GK1541-2BA00
 CP5430
6GK1543-0AA00
6GK1543-0AA01
6GK1543-0AA02
 CP5431
6GK1543-1AA01
6GK1543-1AA00
 CP544
6ES5544-3UA11
 CP544B
6ES5544-3UB11
 CP5611
6GK1561-1AA01
6GK1561-1AA00
 CP5613
6GK1561-3AA01
6GK1561-3AA00
 ELM
6GK1102-5AA00
 Ind. Ethernet PN OPC-Server V6.2 PROFInet
6GK1706-0HB62-3AA0
 Interfacemodule 20mA (TTY)
6ES5752-0AA12
 Interfacemodule CPU945, PG-Module. (TTY)
6ES5752-0LA52
 Interfacemodule PG
6ES5752-0AA52
6ES5752-0AA53
 Interfacemodule RS422/RS485
6ES5752-0AA42
6ES5752-0AA43
 Interfacemodule SINEC L1
6ES5752-0LA62
 Interfacemodule TTY/20mA
6ES5752-0LA12
 Interfacemodule V24/V28(RS232C)
6ES5752-0AA22
6ES5752-0AA23
 MUX 757 S5 Interface
6ES5757-0AA11
 OLM
6GK1102-4AA00
 OLM - Glass f. Profibus
6GK1502-4AB10
 OLM - Plastics f. Profibus
6GK1502-4AA10
 OLM 12M Plastic f. Profibus
6GK1502-3BA00
 OLM/G11 Glass f. Profibus
6GK1503-2CB00
6GK1502-2CB10
6GK1502-2CB00
 OLM/G12 Glass f. Profibus
6GK1503-3CB00
6GK1502-3CB10
 Patch Cable 727-1 Sinec H1
6ES5727-1CB00
6ES5727-1CB50
 Profibus DP/AS-Interface Link 20E
6GK1415-2AA01
 Profibusconnector 180 OP FC Standard
6GK1500-0EA00
6GK1500-0EA02
 Profibusconnector 180 OP Standard
6GK1500-0FC10
6GK1500-0FC00
 programming software Siemens Standard FB
6ES5848-7DA04
 Promea Module for Ce*al Unit M20-M80
6AF7001-7DA
6AF7001-7DC
6AF7001-7CA
6AF7001-7CD
 S5-NET Busconnector
6ES5762-1AA21
 S5-NET Buskoppler
6ES5755-0AA13
 S5-NET ET200B 16DO
6ES5451-2BA11
 SIBUKO PACK (H1 BUSKOPPLER)
6GK1100-0AB00
6GK1100-0AJ00
 SIBUKO Pack 1
6GK1100-0AA00
 Simatic NET ITP Cable 15pin-9pin
6XV1850-0BH20
6XV1850-0BH50
 Simatic Net Software PG-1414
6GK1701-1PW50-3AA0
 Simatic Profinet IE FC RJ45 Plug 180° Connector
6GK1901-1*10-2AA0
6GK1901-1*10-2AB0
6GK1901-1*10-2AE0
 SINEC H1 interface multiplier SSV104
6GK1104-0AA00
 Sinec L2 ISA PC card
C79458-L2271-B1
 Sinec L2 Repeater RS485
6GK1510-0AC00
 Sinec L2-TF Interface
6GK1548-0AA00
 SOFTwerk Connecting cable 734-5
6ES5734-5BC50
 SSV 102 Hub 5
6GK1102-0AC00
6GK1102-0AA00
 Terminating Resintence Sinec H1 50Ohm
6ES5755-3AA11
 Termination resistor for ET200C
6ES5755-2CA11
 TK858
6ES5858-0AA11
 CP 5614
6GK1561-4AA01
6GK1561-4AA00
 DP/RS232C link
6ES7158-0AA01-0XA0
 Ind. Ethernet SOFTNET-S7/Windows V6.0+Advanced PC Configuration
6GK1704-1CW60-3AA0
 OLM-Profibus P12 V4.0
6GK1503-3CA00
 OLM/G11-1300 V4.0 1x RS485 and 1x Glass-FOC-Interfaces
6GK1503-2CC00
 OLM/G12-1300 V4.0 1x RS485 and 2x Glass-FOC-Interfaces
6GK1503-3CC00
 OSM ITP62 2xFO, 6x ITP Ports
6GK1105-2AA00
6GK1105-2AA10
 PROFIBUS OBT Optical Bus Terminal
6GK1500-3AA00
 S7-400 CP443-1
6GK7443-1BX00-0XE0
 S7-400 CP443-1 ADVANCED
6GK7443-1GX20-0XE0
 S7-400 CP443-1 IT
6GK7443-1GX11-0XE0
 S7-400 CP443-5
6GK7443-5FX00-0XE0
6GK7443-5FX01-0XE0
6GK7443-5FX02-0XE0
 S7-400 Interface module RS232
6ES7963-1AA00-0AA0
 S7-400 Interface module RS422/RS485
6ES7963-3AA00-0AA0
 Scalance XB008 unmanaged industrial ethernet switch
6GK5008-0BA00-1AB2
 Simatic NET C-Plug
6GK1900-0AB00
 Simatic NET CP 242-2
6GK7242-2AX00-0XA0
 Simatic NET IE FC TP Standard cable GP (sold by meter)
6XV1840-2AH10
 Simatic NET IE FC TP trailing cabel (sold by meter)
6XV1840-3AH10
 Simatic NET PB FC Flexible Profibus Cable (sold by meter)
6XV1831-2K
 SIMATIC NET PB FC PROFIBUS Trailing cable (sold by meter)
6XV1830-3EH10
 Simatic NET PB FC Standard profibus cable (sold by meter)
6XV1830-0EH10
 SIMATIC NET PB S7-5613/2008 SW
6GK1713-5CB71-3AA0
 SIMATIC NET Profibus Fast Connect Stripping tool
6GK1905-6AA00
 Simatic NET PROFIBUS Torsion Cable (sold by meter)
6XV1830-0PH10
 Simatic NET Scalance X208
6GK5208-0BA10-2AA3
 SIMATIC NET Scalance XB005
6GK5005-0BA00-1AB2
 SIMATIC NET TF-1413 WIN 98, NT 4.0 / V5.0
6GK1701-1TW50-3AA0
 SIMATIC NET TP CORD 9/15
6XV1850-2BH20
 SIMATIC NET TP CORD RJ45/RJ45
6XV1850-2GH60
6XV1850-2GH20
6XV1850-2GH10
 Simatic Profinet IE FC RJ45 Plug 90° Connector
6GK1901-1*20-2AE0
6GK1901-1*20-2AB0
6GK1901-1*20-2AA0