DCS（Distributed Contorl System）集散控制系统，又称分布式控制系统。
从系统结构来说：PLC与DCS的基本结构是一样的。PLC发展到今天，已经全面移植到计算机系统控制上了，传统的编程器早就被淘汰。小型应用的PLC一般使用触摸屏，大规模应用的PLC全面使用计算机系统。和DCS一样，控制器与IO站使用现场总线（一般都是基于RS85或RS232异步串口通讯协议的总线方式），控制器与计算机之间如果没有扩展的要求，也就是说只使用一台计算机的情况下，也会使用这个总线通讯。但如果有不止一台的计算机使用，系统结构就会和DCS一样，上位机平台使用以太网结构。这是PLC大型化后和DCS概念模糊的原因之一。
EMERSON DeltaV KJ1501X1-BA2 System Power Supply(AC/DC)
EMERSON DeltaV KJ1501X1-BB1 System Passthrough Power Supply 12/12VDC(DC/DC)
EMERSON DeltaV KJ1501X1-BC1 System Dual DC Power Supply (DC/DC)
EMERSON DeltaV KJ1501X1-BC2 System Dual DC Power Supply 24/12VDC(DC/DC)
EMERSON DeltaV KJ1501X1-BC3 System Power Supply(DC/DC)
EMERSON DeltaV KJ1501X1-BK1 Controller
EMERSON DeltaV KJ1502X1-BA2 BULK AC TO 24 VDC POWER SUPPLY
EMERSON DeltaV KJ1611X1-EF1 Controller MODULE
EMERSON DeltaV KJ1700X1-BA1 Media Converter
EMERSON DeltaV KJ1710X1-BA1 Single Port Fiber Switch
EMERSON DeltaV KJ1740X1-BA1 Four Port Fiber Switch
EMERSON DeltaV KJ2001X1-BA1 M2 Controller
EMERSON DeltaV KJ2002X1-BA1 M3 Controller
EMERSON DeltaV KJ2002X1-CA1 M5+ Controller
EMERSON DeltaV KJ2003X1-BA2 MD Controller
EMERSON DeltaV KJ2003X1-BB1 MD Plus Controller
EMERSON DeltaV KJ2004X1-BA1 Remote Interface Unit
EMERSON DeltaV KJ2005X1-BA1 MX Controller
EMERSON DeltaV KJ2101X1-BA1 PROVOX M3+ CONT CAR
EMERSON DeltaV KJ2101X1-CA1 PROVOX M3 CONT CAR
EMERSON DeltaV KJ2201X1-BA1 Logic Solver - SLS 1508
EMERSON DeltaV KJ2201X1-HA1 Simplex SLS Terminal Block
EMERSON DeltaV KJ2201X1-JA1 Redundant SLS Terminal Block
EMERSON DeltaV KJ2221X1-BA1 SISNet Repeater
EMERSON DeltaV KJ2221X1-EA1 SISNet Repeater Carrier
EMERSON DeltaV KJ2222X1-BA1 SISNet Distance Extender
EMERSON DeltaV KJ2231X1-BA1 Auxiliary Relay ETA-Direct Module
EMERSON DeltaV KJ2231X1-BB1 Auxiliary Relay DTA-Direct Module
EMERSON DeltaV KJ2231X1-BC1 Auxiliary Relay Diode Module
EMERSON DeltaV KJ2231X1-EA1 SIS Relay Module
EMERSON DeltaV KJ2231X1-EB1 Voltage Monitor
EMERSON DeltaV KJ2231X1-EC1 End of Line Resistance Module
EMERSON DeltaV KJ2231X1-ED1 RC Compensator
EMERSON DeltaV KJ2231X1-EE1 SIS Current Limiter
EMERSON DeltaV KJ3001X1-BA1 DI, 8-Channel, 24 VDC, Isolated Card
EMERSON DeltaV KJ3001X1-BB1 DI,8CH,24 VDC,Dry Contact Card
EMERSON DeltaV KJ3001X1-BC1 DI, 8-Channel 120 VAC,lsolatd
EMERSON DeltaV KJ3001X1-BD1 DISCRETE IN,120 VAC,Dry Contact
EMERSON DeltaV KJ3001X1-BE1 DI，8-Channel 230VAC，Isolated
EMERSON DeltaV KJ3001X1-BH1 DO, 8-Channel 120/230 VAC Isolated
EMERSON DeltaV KJ3001X1-BJ1 DO, 8-Channel, 24 VDC, High Side Card
EMERSON DeltaV KJ3001X1-BK1 DO, 8-Channel, 120/230 VAC, High Side
EMERSON DeltaV KJ3001X1-CA1 DI,32 CH,24 VDC，Dry Contact
EMERSON DeltaV KJ3001X1-CB1 DO, 32-Channel, 24 VDC, High-Side
EMERSON DeltaV KJ3002X1-BA1 Analog Input, 8 Channel, 4-20mA, HART Card
EMERSON DeltaV KJ3002X1-BB1 ANALOG OUTPUT, 4-20mA
EMERSON DeltaV KJ3002X1-BC1 Analog Input Module Final Assy, 4-20mA,
EMERSON DeltaV KJ3002X1-BD1 ANALOG INPUT 1-5 VDC
EMERSON DeltaV KJ3002X1-BE1 Analog Output, 8-Channel, 4-20mA, HART Card
EMERSON DeltaV KJ3002X1-BF1 RTD,ohms 12VDC,160mA
EMERSON DeltaV KJ3002X1-BG2 Thermocouple, MV Card
EMERSON DeltaV KJ3003X1-BA1 Serial Interface Card
