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當(dāng)前工業(yè)控制計(jì)算機(jī)的應(yīng)用范圍仍以大系統(tǒng)、分散對象、連續(xù)生產(chǎn)過程(如冶金、石化、電力)為主，采用分布式系統(tǒng)結(jié)構(gòu)的分散控制系統(tǒng)仍在發(fā)展。由于開放結(jié)構(gòu)和集成技術(shù)的發(fā)展，進(jìn)一步擴(kuò)展了大型分散控制系統(tǒng)的應(yīng)用。
1.應(yīng)用現(xiàn)狀
DCS自1975年問世以來，大約有3次比較大的變革，70年代操作站的硬件、操作系統(tǒng)、監(jiān)視軟件都是專用的，由各DCS廠家自己開發(fā)并沒有動(dòng)態(tài)流程圖，通信網(wǎng)絡(luò)基本上是輪詢方式；80年代通信網(wǎng)絡(luò)較多使用令牌方式；90年代操作站出現(xiàn)了通用系統(tǒng)，90年代末通信網(wǎng)絡(luò)有的部分遵循TCP/IP協(xié)議，有的開始采用以太網(wǎng)。20多年來，DCS已廣泛應(yīng)用于各工業(yè)領(lǐng)域并趨于成熟，成為工業(yè)控制系統(tǒng)的主流。
雖以現(xiàn)場總線為基礎(chǔ)的FCS發(fā)展很快，最終將取代傳統(tǒng)DCS，但其發(fā)展仍面臨一些問題，如統(tǒng)一標(biāo)準(zhǔn)、儀表智能化等。而傳統(tǒng)控制系統(tǒng)的維護(hù)和改造還需DCS，因此FCS完全取代傳統(tǒng)DCS尚有較長過程�，F(xiàn)DCS的新產(chǎn)品的特點(diǎn)為：系統(tǒng)開放、管控一體化及帶有先進(jìn)控制軟件，DCS生產(chǎn)廠家也從事FCS的研發(fā)、生產(chǎn)和推廣應(yīng)用。
2.DCS存在的問題
(1)1對1結(jié)構(gòu)。1臺儀表，1對傳輸線，單向傳輸1個(gè)信號。這種結(jié)構(gòu)造成接線龐雜、工程周期長、安裝費(fèi)用高、維護(hù)困難。
(2)可靠性差。模擬信號傳輸不僅精確度低，且易受干擾。為此采用各種措施提高抗干擾性和傳輸精確度，其結(jié)果是增加了成本。
(3)失控狀態(tài)。操作員在控制室既不了解現(xiàn)場模擬儀表的工作狀況，也不能對其進(jìn)行參數(shù)調(diào)整，更不能預(yù)測事故，導(dǎo)致操作員對其處于失控狀態(tài)。因操作員不能及時(shí)發(fā)現(xiàn)現(xiàn)場儀表故障，而發(fā)生事故已屢見不鮮。
(4)互操作性差。盡管模擬儀表已統(tǒng)一4～20mA信號標(biāo)準(zhǔn)，可大部分技術(shù)參數(shù)仍由制造商自定，致使不同品牌儀表無法互換。因此導(dǎo)致用戶依賴制造廠，無法使用性能價(jià)格比最優(yōu)的配套儀表，甚至出現(xiàn)個(gè)別制造商壟斷市場的局面。
3.DCS在中國
因我國傳統(tǒng)產(chǎn)業(yè)改造和新建工程項(xiàng)目對DCS的急需，80年代從國外引進(jìn)了幾百套DCS來裝備石化、冶金、電力等行業(yè)。進(jìn)入90年代，我國一些新型高科技公司進(jìn)入DCS領(lǐng)域。目前在國內(nèi)生產(chǎn)的DCS不僅具有價(jià)格低廉、備品備件方便的優(yōu)勢，而且在技術(shù)先進(jìn)、組態(tài)學(xué)習(xí)容易、技術(shù)支持有力等方面都獲得用戶肯定。國內(nèi)DCS生產(chǎn)的最新產(chǎn)品具有系統(tǒng)開放、兼容現(xiàn)場總線、管控一體化和帶有先進(jìn)控制軟件，在技術(shù)上可初步與國外產(chǎn)品相抗衡。目前，我國現(xiàn)場控制系統(tǒng)一般仍采用DCS。
4.發(fā)展方向
DCS發(fā)展至今已相當(dāng)成熟和實(shí)用，毫無疑問，它仍是當(dāng)前工業(yè)自動(dòng)化系統(tǒng)應(yīng)用及選型的主流，不會(huì)隨著現(xiàn)場總線技術(shù)的出現(xiàn)而立即退出現(xiàn)場過程控制的舞臺。面對挑戰(zhàn)，DCS將沿著以下趨勢繼續(xù)向前發(fā)展：
(1)向綜合方向發(fā)展：標(biāo)準(zhǔn)化數(shù)據(jù)通信鏈路和通信網(wǎng)絡(luò)的發(fā)展，將各種單(多)回路調(diào)節(jié)器、PLC、工業(yè)PC、NC等工控設(shè)備構(gòu)成大系統(tǒng)，以滿足工廠自動(dòng)化要求，并適應(yīng)開放式的大趨勢。
(2)向智能化方向發(fā)展：數(shù)據(jù)庫系統(tǒng)、推理機(jī)能等的發(fā)展，尤其是知識庫系統(tǒng)(KBS)和專家系統(tǒng)(ES)的應(yīng)用，如自學(xué)習(xí)控制、遠(yuǎn)距離診斷、自尋優(yōu)等，人工智能會(huì)在DCS各級實(shí)現(xiàn)。與FF現(xiàn)場總線類似，以微處理器為基礎(chǔ)的智能設(shè)備如智能I/O、PID控制器、傳感器、變送器、執(zhí)行器、人機(jī)接口、PLC相繼出現(xiàn)。
(3)DCS工業(yè)PC化：由IPC組成DCS已成為一大趨勢，PC作為DCS的操作站或節(jié)點(diǎn)機(jī)已很普遍，PC-PLC、PC-STD、PC-NC等就是PC-DCS先驅(qū)，IPC成為DCS的硬件平臺。

(4)DCS專業(yè)化：DCS為更適合各相應(yīng)領(lǐng)域的應(yīng)用，就要進(jìn)一步了解相應(yīng)專業(yè)的工藝和應(yīng)用要求，以逐步形成如核電DCS，變電站DCS、玻璃DCS、水泥DCS等。

PCB Tosnuc Shibaura ZSU5A0D
PCB Tosnuc ARNI-828B
PCB Shibaura Tosnuc BSC4BP-0
PCB Tosnuc ARNI-837
PCB Tosnuc ARNI-827D
PCB Shibaura Tosnuc YIP2A2B
PCB Tosnuc CSC2A
Transistor Servo Tosnuc ACTS-80
PCB Shibaura Tosnuc VT5C-1004A
PCB Tosnuc ZAD1B
Servo Drive Toshiba TS80 RECON
Servo Drive Toshiba TS40 RECON
PCB Tosnuc Shibaura MTSDB1
Master Board Fanuc A20B-0008-0410/03B  
PCB Tosnuc PTRA2
PCB Tosnuc TSVBB RECON
Servo Drive Toshiba AT-14A USED UNIT
PCB Tosnuc APU1B
PCB Tosnuc APR1B
PCB Shibaura Tosnuc CDPB3CPS-72
Power Supply Unit Toshiba Tosnuc RD-80A
PCB Shibaura Tosnuc BMB1C0-A
PCB Shibaura Tosnuc BMB2A0-APCB 
Shibaura Tosnuc APRA-A
PCB Tosnuc AMI1B4-B
PCB Tosnuc AMI1B
PCB Tosnuc CPU-8008-1
PCB Shibaura Tosnuc TSA1C1-B
PCB Tosnuc Shibaura TSA1A1-B
PCB Shibaura Tosnuc BPU2A1-A
PCB Tosnuc ZSU6A
PCB Shibaura Tosnuc APS1A1
PCB Shibaura Tosnuc YAA3A0-B
PCB Shibaura Tosnuc YNC2AP9 RECON
PCB Tosnuc AMO1A
PCB Tosnuc TSD1A
PCB Tosnuc BMC3AO-A
PCB Tosnuc ASV2A
PCB Tosnuc APR1A
PCB Tosnuc APN1B
PCB Shibaura Tosnuc ZAD1A1B RECON
PCB Shibaura Tosnuc YCP1AP01
PCB Yaskawa JPDC-C027-A JPDCC027A    


PCB Shibaura Tosnuc TSDB4 RECON
PCB Tosnuc TSDB3
PCB Tosnuc ZAT1A (E)
PCB Tosnuc BAN2A
PCB Tosnuc AMI1A
PCB Tosnuc AIPA1
PCB Tosnuc ZMO2A
Power Supply Unit Tosnuc RD-50B
Power Supply Unit Tosnuc SR-80B RECON
PCB Shibaura Tosnuc ATN1A2-C
Power Supply Unit Toshiba SR-50A RECON
PCB Tosnuc Shibaura ABM1C2-C
PCB Tosnuc ABM1C1
Servo Controller CACRSV3AAA Yaskawa CACR-SV3-AAA
Communication Unit 0608830162 Bosch Rexroth KE300
PCB Shibaura Tosnuc CCB1A
PCB Tosnuc TSVBAO-B
PCB Tosnuc ATN2A
PCB Tosnuc Shibaura ZCC9A0-A
Servo Drive Tosnuc AC-12D
Servo Drive Tosnuc AC-06A
PCB Tosnuc Shibaura ZMO2D0
PCB Tosnuc Shibaura APR1B2-D RECON
Power Supply Unit Fanuc A14B-0061-B001 USED UNIT A14B0061B001
PCB Tosnuc AMM1B1A70M AMM1B1-A70M
PCB Yaskawa JPDC-C024 RECON JPDCC024
PCB JPDCC027 Yaskawa JPDC-C027 RECON
Servo Drive Toshiba TS36A-A USED UNIT
PCB Shibaura Tosnuc ZMG1E1-C RECON
PCB Toshiba NC1803-TEMS2
PCB Tosnuc CSC1A
PCB Tosnuc ZTS7D
PCB Shibaura Tosnuc ZCW3A0
Transistor Servo Tosnuc ACTS-40B USED UNIT
PCB Tosnuc Shibaura AEX1B2-B
PCB Tosnuc Shibaura AAN1A1-S1
PCB Tosnuc Shibaura ZDC2D1-1 RECON
PCB Shibaura Tosnuc ZMS3C1
Input Board VMIVME-1181-000 VMIVME1181000
PCB Tosnuc FBM-M128AA RECON FBMM128AA
PCB Tosnuc APU1E
PCB Shibaura Tosnuc ZIF2C1-A
PCB Shibaura Tosnuc ZIF1A0
PCB Shibaura Tosnuc ABM1A0-A RECON
Power Unit Toshiba AU-1
PCB Tosnuc CFK1B
PCB Tosnuc Shibaura ZPU2A
Servo Drive A06B6050H102 Fanuc A06B-6050-H102  
PCB Shibaura Tosnuc ZMO2D0 RECON
PCB Shibaura Tosnuc APU1A1-A  
PCB Tosnuc Shibaura APR1A1-B  
PCB Tosnuc Shibaura APU1A4-B 
PCB Tosnuc Shibaura APU1A2-F
CPU Module Radisys EPC1-20-04-0 RECON EPC120040
Power Supply Unit Tosnuc RD-50A  
PCB Tosnuc ASV1A3 RECON
PCB Shibaura Tosnuc APU1C4-B 
PCB Tosnuc ZPN1A RECON
PCB Tosnuc AMO3B0-8
PCB Tosnuc APN1A
PCB Yaskawa JPDC-S001 JPDCS001
PCB Yaskawa JPDC-P031 JPDCP031
PCB Yaskawa JPDC-P008 JPDCP008
PCB JPDCD003 Yaskawa JPDC-D003
PCB JPDCC030 Yaskawa JPDC-C030
PCB JPDCA001 Yaskawa JPDC-A001
PCB JPDCC001 Yaskawa JPDC-C001   7月20日到這
PCB JPDCC004 Yaskawa JPDC-C004
PCB Tosnuc Shibaura APR1A2-D
Drive Controller Rexroth Indramat HCS02.1E.W0028-A-03-NNNN
PCB Shibaura Tosnuc ZCC3A1
PCB Tosnuc Shibaura ZMI3A2-A
Servo Drive CACRSR02AD1FR Yaskawa CACR-SR02-AD1-FR
PCB Tosnuc CCB3A
PCB Shibaura Tosnuc CDI2A1-A
PCB Tosnuc BAL2A1-A
PCB Tosnuc AMM1D1-A150M
PCB Tosnuc AMM1C
PCB Tosnuc BPC2A RECON
CRTC/Puncher Board Fanuc A20B-0008-0430/02A 
LCD Display Allen Bradley 2707-L8P2 2707L8P2
PCB Tosnuc Shibaura AEX1A2-B
PCB Shibaura Tosnuc DACM
PCB Shibaura Tosnuc ARM1A0
PCB Tosnuc ZDC2C1-F 
PCB Tosnuc Shibaura AOP1A2-1
Servo controller Bosch Rexroth 0608750084 LT303
PCB Tosnuc ZFK2A
PCB Shibaura Tosnuc YPW1A1
Communication Processor Siemens 6GK1543-1AA01
Network Module Mitsubishi AJ71LP21
PCB Tosnuc Shibaura AAN1A0-F 
PCB Tosnuc AMM1A1A35M AMM1A1-A35M
PCB Tosnuc AEC2A
PCB Tosnuc ZMO6A
PCB Tosnuc ZMO4A
PCB Shibaura Tosnuc BFC1A0
PCB Tosnuc CFC1A
PCB Tosnuc BLM1A
PCB Tosnuc BFP1A
PCB Tosnuc BBP4A
PCB Tosnuc BBP3A
PCB Tosnuc BBP2A
PCB Tosnuc ASC1A-1
PCB Tosnuc ARM2A1-A
PCB Tosnuc ZCA5C
PCB Tosnuc ZCA5J
PCB Tosnuc ZCA6C
PCB Tosnuc ZCA6M
PCB Tosnuc ZCR2A
PCB Tosnuc ZCR2B
PCB Tosnuc ZMS2A
PCB Tosnuc APD1A
PCB Shibaura Tosnuc H025530
CB Shibaura Tosnuc H029026
PCB Tosnuc Shibaura H025528
PCB Tosnuc Shibaura H029025
PCB Solartron 79400501C
PCB Solartron 79400501B
Power Supply Goring Kerr DP7912
PCB Tosnuc ZMI3A2
PCB Tosnuc ZMO3A



PCB Tosnuc Shibaura ZSU5A0D
PCB Tosnuc ARNI-828B
PCB Shibaura Tosnuc BSC4BP-0
PCB Tosnuc ARNI-837
PCB Tosnuc ARNI-827D
PCB Shibaura Tosnuc YIP2A2B
PCB Tosnuc CSC2A
Transistor Servo Tosnuc ACTS-80
PCB Shibaura Tosnuc VT5C-1004A
PCB Tosnuc ZAD1B
Servo Drive Toshiba TS80 RECON
Servo Drive Toshiba TS40 RECON
PCB Tosnuc Shibaura MTSDB1
Master Board Fanuc A20B-0008-0410/03B  
PCB Tosnuc PTRA2
PCB Tosnuc TSVBB RECON
Servo Drive Toshiba AT-14A USED UNIT
PCB Tosnuc APU1B
PCB Tosnuc APR1B
PCB Shibaura Tosnuc CDPB3CPS-72
Power Supply Unit Toshiba Tosnuc RD-80A
PCB Shibaura Tosnuc BMB1C0-A
PCB Shibaura Tosnuc BMB2A0-APCB 
Shibaura Tosnuc APRA-A
PCB Tosnuc AMI1B4-B
PCB Tosnuc AMI1B
PCB Tosnuc CPU-8008-1
PCB Shibaura Tosnuc TSA1C1-B
PCB Tosnuc Shibaura TSA1A1-B
PCB Shibaura Tosnuc BPU2A1-A
PCB Tosnuc ZSU6A
PCB Shibaura Tosnuc APS1A1
PCB Shibaura Tosnuc YAA3A0-B
PCB Shibaura Tosnuc YNC2AP9 RECON
PCB Tosnuc AMO1A
PCB Tosnuc TSD1A
PCB Tosnuc BMC3AO-A
PCB Tosnuc ASV2A
PCB Tosnuc APR1A
PCB Tosnuc APN1B
PCB Shibaura Tosnuc ZAD1A1B RECON
PCB Shibaura Tosnuc YCP1AP01
PCB Yaskawa JPDC-C027-A JPDCC027A    


PCB Shibaura Tosnuc TSDB4 RECON
PCB Tosnuc TSDB3
PCB Tosnuc ZAT1A (E)
PCB Tosnuc BAN2A
PCB Tosnuc AMI1A
PCB Tosnuc AIPA1
PCB Tosnuc ZMO2A
Power Supply Unit Tosnuc RD-50B
Power Supply Unit Tosnuc SR-80B RECON
PCB Shibaura Tosnuc ATN1A2-C
Power Supply Unit Toshiba SR-50A RECON
PCB Tosnuc Shibaura ABM1C2-C
PCB Tosnuc ABM1C1
Servo Controller CACRSV3AAA Yaskawa CACR-SV3-AAA
Communication Unit 0608830162 Bosch Rexroth KE300
PCB Shibaura Tosnuc CCB1A
PCB Tosnuc TSVBAO-B
PCB Tosnuc ATN2A
PCB Tosnuc Shibaura ZCC9A0-A
Servo Drive Tosnuc AC-12D
Servo Drive Tosnuc AC-06A
PCB Tosnuc Shibaura ZMO2D0
PCB Tosnuc Shibaura APR1B2-D RECON
Power Supply Unit Fanuc A14B-0061-B001 USED UNIT A14B0061B001
PCB Tosnuc AMM1B1A70M AMM1B1-A70M
PCB Yaskawa JPDC-C024 RECON JPDCC024
PCB JPDCC027 Yaskawa JPDC-C027 RECON
Servo Drive Toshiba TS36A-A USED UNIT
PCB Shibaura Tosnuc ZMG1E1-C RECON
PCB Toshiba NC1803-TEMS2
PCB Tosnuc CSC1A
PCB Tosnuc ZTS7D
PCB Shibaura Tosnuc ZCW3A0
Transistor Servo Tosnuc ACTS-40B USED UNIT
PCB Tosnuc Shibaura AEX1B2-B
PCB Tosnuc Shibaura AAN1A1-S1
PCB Tosnuc Shibaura ZDC2D1-1 RECON
PCB Shibaura Tosnuc ZMS3C1
Input Board VMIVME-1181-000 VMIVME1181000
PCB Tosnuc FBM-M128AA RECON FBMM128AA
PCB Tosnuc APU1E
PCB Shibaura Tosnuc ZIF2C1-A
PCB Shibaura Tosnuc ZIF1A0
PCB Shibaura Tosnuc ABM1A0-A RECON
Power Unit Toshiba AU-1
PCB Tosnuc CFK1B
PCB Tosnuc Shibaura ZPU2A
Servo Drive A06B6050H102 Fanuc A06B-6050-H102  
PCB Shibaura Tosnuc ZMO2D0 RECON
PCB Shibaura Tosnuc APU1A1-A  
PCB Tosnuc Shibaura APR1A1-B  
PCB Tosnuc Shibaura APU1A4-B 
PCB Tosnuc Shibaura APU1A2-F
CPU Module Radisys EPC1-20-04-0 RECON EPC120040
Power Supply Unit Tosnuc RD-50A  
PCB Tosnuc ASV1A3 RECON
PCB Shibaura Tosnuc APU1C4-B 
PCB Tosnuc ZPN1A RECON
PCB Tosnuc AMO3B0-8
PCB Tosnuc APN1A
PCB Yaskawa JPDC-S001 JPDCS001
PCB Yaskawa JPDC-P031 JPDCP031
PCB Yaskawa JPDC-P008 JPDCP008
PCB JPDCD003 Yaskawa JPDC-D003
PCB JPDCC030 Yaskawa JPDC-C030
PCB JPDCA001 Yaskawa JPDC-A001
PCB JPDCC001 Yaskawa JPDC-C001   7月20日到這
PCB JPDCC004 Yaskawa JPDC-C004
PCB Tosnuc Shibaura APR1A2-D
Drive Controller Rexroth Indramat HCS02.1E.W0028-A-03-NNNN
PCB Shibaura Tosnuc ZCC3A1
PCB Tosnuc Shibaura ZMI3A2-A
Servo Drive CACRSR02AD1FR Yaskawa CACR-SR02-AD1-FR
PCB Tosnuc CCB3A
PCB Shibaura Tosnuc CDI2A1-A
PCB Tosnuc BAL2A1-A
PCB Tosnuc AMM1D1-A150M
PCB Tosnuc AMM1C
PCB Tosnuc BPC2A RECON
CRTC/Puncher Board Fanuc A20B-0008-0430/02A 
LCD Display Allen Bradley 2707-L8P2 2707L8P2
PCB Tosnuc Shibaura AEX1A2-B
PCB Shibaura Tosnuc DACM
PCB Shibaura Tosnuc ARM1A0
PCB Tosnuc ZDC2C1-F 
PCB Tosnuc Shibaura AOP1A2-1
Servo controller Bosch Rexroth 0608750084 LT303
PCB Tosnuc ZFK2A
PCB Shibaura Tosnuc YPW1A1
Communication Processor Siemens 6GK1543-1AA01
Network Module Mitsubishi AJ71LP21
PCB Tosnuc Shibaura AAN1A0-F 
PCB Tosnuc AMM1A1A35M AMM1A1-A35M
PCB Tosnuc AEC2A
PCB Tosnuc ZMO6A
PCB Tosnuc ZMO4A
PCB Shibaura Tosnuc BFC1A0
PCB Tosnuc CFC1A
PCB Tosnuc BLM1A
PCB Tosnuc BFP1A
PCB Tosnuc BBP4A
PCB Tosnuc BBP3A
PCB Tosnuc BBP2A
PCB Tosnuc ASC1A-1
PCB Tosnuc ARM2A1-A
PCB Tosnuc ZCA5C
PCB Tosnuc ZCA5J
PCB Tosnuc ZCA6C
PCB Tosnuc ZCA6M
PCB Tosnuc ZCR2A
PCB Tosnuc ZCR2B
PCB Tosnuc ZMS2A
PCB Tosnuc APD1A
PCB Shibaura Tosnuc H025530
CB Shibaura Tosnuc H029026
PCB Tosnuc Shibaura H025528
PCB Tosnuc Shibaura H029025
PCB Solartron 79400501C
PCB Solartron 79400501B
Power Supply Goring Kerr DP7912
PCB Tosnuc ZMI3A2
PCB Tosnuc ZMO3A