SIS系统卡件3721
·过程控制以计算机控制作为主流。近年来，计算机技术的飞速发展正迅速改变着工业自动化的现状，传统的生产过程计算机控制系统已仅仅是一个狭义的概念，现代计算机控制系统的含义已被大大扩展 ，它不仅包含我们最熟悉的各种自动控制系统、各种顺序逻辑控制系统、各种自动批处理控制系统及联锁保护系统，还包括了各生产工段和各生产车间的优化调度系统，以及整个企业的决策系统和管理系统。本文重点分析作为现代工业顺序逻辑控制的可编程逻辑控制PLC、现代工业主流的集散型控制系统(DCS)和未来工业主流的现场总线控制系统(FCS)及其相互关系。
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FASTEST 1.34"-1.41" MAIN SEAL SET, FES228 *NEW*
1/4 INCH NIPPLE FITTING *NEW, LOT OF 2*
DME FELT POLISHING KIT, FPK326 *NEW*
MILLER IRON GLAND STAR BUSHING ROD KIT, 051-KR075-100 *...
MICROMATIC, P8387-5301-43
.MAXON 50PSIG, 120/60 SOLENOID/CLUTCH?, 280VA, SHUT-OFF ...
DODGE 22MM KEY SIZE TAPER LOCK BUSHING 119655 *NEW*
BROWNING H60Q30 SPROCKET NIB SEALED
DANIEL WOODHEAD COMPANY 125V, 20A, NEMA 5-20, CONNECTOR...
AMERICAN COUPLING CO 3/4 INCH HOSE CONNECTOR *NEW, LOT ...
GE,CONTACTOR, CL04D310MD, 112096
WIRE MOLD 810A1 *NEW SEALED LOT OF 8*
MARTIN 3/4" BORE 11 TEETH SPROCKET, 35BS11 *NEW*
FERRULE SET BRASS FITTING 5/16 INCH, LOT OF 20, NNB
BROWNING 5IN. OD 2IN. ID SHEAVE 1TA46 *NEW*
VTG 5/8IN. DIA 6IN. OAL DRILL ROD #510 *NEW*
COOPER TURBOCOMPRESSOR O-RING,SPECIAL REPLACEMENT PARTS...
SMC 1/8 INCH CONNECTION, FITTING KQ2S09-34S *NEW,SEALED...
REES FLAT CHROME PLUNGER PUSHBUTTON 04757-012 *NEW*
PARKER 4-4-4-JBZ-B BRASS UNION TEE, LOT OF 10, NNB
VEEDER-ROOT 115V 60HZ 5W COUNTER 120506-010
DODGE 118136 6A5.0B5.4-2517 TAPER SHEAVE, NIB
FESTO 25MM PISTON 40MM STROKE PNEUMATIC FLAT CYLINDER, ...
DENSO U-GROOVE SPARK PLUGS, W9-U *NEW LOT OF 5*
SIEMENS SIRIUS 24VDC COIL 400V CONTACTOR 3RT1024-3BB40
NOSHOK, 25.100, 1000 PSI/KPA, 1/4 NPT BOTTOM CONN.
FOSTORIA 120VAC 110W PORTABLE FLOODLIGHT, FL-2 *NEW*
TPC WIRE AND CABLE 5 PIN FEMALE CORDSET 64520 *NEW*
