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PLC操作向简易化方向发展。目前PLC推广的难度就是复杂的编
程使得用户望而却步，而且不同厂商PLC所用编程的语言也不尽相同
，用户往往需要掌握多种编程语言，难度较大。PID控制、网络通信
、高速计数器、位置控制、数据记录、配方和文本显示器等编程和
应用也是PLC程序设计中的难点，用普通的方法对它们编程时，需要
熟悉有关的特殊存储器的意义，在编程时对它们赋值，运行时通过
访问它们来实现对应的功能。这些程序往往还与中断有关，编程的
过程既繁琐又容易出错，阻碍了PLC的进一步推广应用。PLC的发展
必然朝着操作简易化方向迈进，比如使用编程向导简化对复杂任务
的编程，在这一点上西门子就充当了先行者，西门子S7-200的编程
软件设计了大量的编程向导，只需要在对话框中输入一些参数，就
可以自动生成包括中断程序在内的用户程序，大大方便了用户的使
用。
ROSEMOUNT 3D39441G09 WORLD CLASS 3000 9FT ANALYZER HEATER PROBE D577132
LIMITORQUE SMA 550V-AC SIZE 1 VALVE ACTUATOR D568830
BECK 11--01 ELECTRONIC CONTROL DRIVE ACTUATOR 120V 1PH D584153
METSO P4610370 KAJAANI MCA MICROWAVE CONSISTENCY TRANSMITTER DISPLAY D594724
EL-O-MATIC PS4000.U0A14A.00K0 PNEUMATIC VALVE ACTUATOR D597213
AUMA SA 10.1-FA10 GZ 25.1 GS250 ELECTRIC VALVE ACTUATOR D560956
AUMA SA07.5 GS200.3/GZ200.3 AD63-2/80 864:1 ELECTRIC ACTUATOR D562557
SIEMENS 6DR52100EN000AA0 VALVE POSITIONER D553034
FLOWSERVE L120-40 LIMITORQUE 1HP VALVE ACTUATOR D555066
DODGE 132954 SLEEVOIL BEARING LINER ASSEMBLY 4-15/16IN D521952
ROTORK SM-5120-N-1-48/300-90 VALVE DAMPER ROTARY ACTUATOR D538452
SIEMENS 6DR5215-0EN00-0AA0 SIPART PS2 ELECTRO-PNEUMATIC POSITIONER D554224
LIMITORQUE L120-40 1.8HP 1900RPM MSG0056Y 250V-DC VALVE ACTUATOR D555275
SIEMENS P1051AD 5-7/8IN ID PUMP STEEL BUSHING D511529
SIEMENS 6DR5215-0EN00-0AA0 SIPART PS2 ELECTRO-PNEUMATIC POSITIONER D554223
ROOTS DRESSER RK10AVBOO 10IN ROTARY LOBE BLOWER REPAIR KIT D583917
FLOWSERVE CSCPX1750EAXVS STAINLESS PUMP SEAL CARTRIDGE 1.75IN D561308
ROTORK 40AFA25A 575V-AC 3PH 5.9HP 500LB-FT ELECTRIC VALVE ACTUATOR D565521
EIM MDF3-4 M2CP 2000 ROTORY VALVE ACTUATOR CONTROLLER ASSEMBLY D566173
ROSEMOUNT 4847B61G04 OXYMITTER 4000 ANSI 6FT CELL REPLACEMENT KIT D592368
VALVCON LVWX2500KS2N115AC JAMESBURY VALVE ACTUATOR 115V-AC D554431
JOHN CRANE 1-82982 T1648LP TYPE 1648LP 3-1/4IN STAINLESS PUMP SEAL D528859
MOYNO SS A2D5020 15-1/4IN STAINLESS PUMP ROTOR D595422
EL-O-MATIC EL-2500 ELECTRIC ROTARY VALVE ACTUATOR D594705
SIEMENS 6DR5110-0NN01-0AA3 SIPART PS2 SMART VALVE POSITIONER D583320
SIEMENS 6DR5110-0NN01-0AA3 SIPART PS2 SMART VALVE POSITIONER D583495
JORDAN CONTROLS ROTORK SM-1730-D-1-12/1200-90 ROTARY ACTUATOR 120V D569894
EL-O-MATIC PD4000.U0A00A.00K0 PNEUMATIC VALVE ACTUATOR 116PSI D594763
JORDAN CONTROLS ROTORK SM-1730-D-1-12/1200-90 ROTARY ACTUATOR 120V D569896
SIEMENS 6DR5210-0EN01-0AA3 SIPART PS2 SMART VALVE POSITIONER D583322
ROTORK A14 0.6HP 575V-AC 120LB-FT 3PH VALVE ACTUATOR D565866
EL-O-MATIC PS2500.U0A14A.00K0 PNEUMATIC VALVE ACTUATOR 116PSI D594769
GOULDS RC04051A 1012 13IN TAPER BORE IRON STUFFING BOX COVER D579941
METSO NP704/B1S1A NELES PNEUMATIC VALVE POSITIONER D553381
EIM Q7N2-6 M2CP 2000 ROTORY VALVE ACTUATOR CONTROLLER ASSEMBLY D566468
PUMP IMPELLER 25IN OD 3IN THREADED ID 4 VANE D566179
ABB V0001 TZIDC ELECTRO PNEUMATIC VALVE POSITIONER D597872
SIEMENS 6DR5210-0EN01-0AA3 SIPART PS2 SMART VALVE POSITIONER D583326
WEIR 38777 31IN OD 14-1/8IN EYE SLURRY PUMP IMPELLER 4-VANE D563691
FLOWSERVE 120CHTA59AX5 R-655-3 STEEL BALANCE SLEEVE D568833
DODGE 132225 SLEEVOIL SIZE 8 RT THRUST PLATE KIT D559923
WEIR DAM005XLM BEARING CARTRIDGE ASSEMBLY SLURRY CENTRIFUGAL PUMP D598798
HONEYWELL 0102660-1-0000-00001000-00 120V-AC ACTUATOR D514336
WEIR 59111 31IN OD 12IN EYE SLURRY PUMP IMPELLER 4-VANE D580528
FLOWSERVE GEB422246DB-C JS STAINLESS SPLIT PUMP SEAL D569456
EIM 9H5753FC-C 1/4HP 575V-AC 3PH ELECTRIC VALVE ACTUATOR D579678
SIEMENS 6DR5210-0EN00-0AA3 SIPART PS2 HART VALVE POSITIONER D566823
FLOWSERVE RG316SR7SN0GE00 AUTOMAX PNEUMATIC VALVE ACTUATOR D580127
SUDMO D630 2141403 SANITARY DOUBLE SEAT STAINLESS VALVE ACTUATOR D568754
MASONEILAN DRESSER SVI2-21123121 DIGITAL VALVE POSITIONER D583853
ATLAS COPCO 2906-0298-00 AIR COMPRESSOR SERVICE KIT D552484
NELES JAMESBURY QPX4C/K40 QUADRA-POWR X VALVE ACTUATOR D553767
DEZURIK 425939T CONSISTENCY TRANSMITTER PIPELINE MODULE D585020
GOULDS RC04113A011216 CD4MCU 10IN TAPER BORE STUFFING BOX COVER D567031
STURM 0M0 6 VANE 23 IN OD 4-1/4 IN ID BRASS PUMP IMPELLER D524514
FLOWSERVE MY49112A130-D4 5-VANE 13IN OD STAINLESS PUMP IMPELLER D522044
AUMA SA07.5 VD63-2/45 ELECTRIC VALVE ACTUATOR 575V-AC D565896
FLOWSERVE 67128 3-5/8IN X 98IN STEEL PUMP SHAFT D594784
DRESSER L3382-2 13-1/2IN STEEL PUMP IMPELLER D598830
FALK 0706057 14F COUPLING GRID D558317
SCHUNK 358200 SRU 50.2 PNEUMATIC ROTARY ACTUATOR D596009
CHESTERTON 255-38 SHAFT SIZE 4.750 DUAL CARTRIDGE SEAL D584687
METSO NE724/S1A-CE01 NELES ELECTRO-PNEUMATIC VALVE POSITIONER D554568
FLOWSERVE RG314SR3SN0GE00 AUTOMAX PNEUMATIC VALVE ACTUATOR D579957
VANE STAINLESS PUMP IMPELLER C256 80AC 3194 19IN OD 2-5/16IN ID D581636
MOYNO S7211 CAVITY PUMP ROTOR D591484
NELES JAMESBURY QPX3C/K35 QUADRA-POWR X VALVE ACTUATOR D555682
EIM 9H4603FC-E ROTARY VALVE ACTUATOR CONTROLLER ASSEMBLY D577857
FISHER DVC6010F FIELDVUE VALVE POSITIONER D574629
FISHER DVC6020F FIELDVUE VALVE POSITIONER D574628
MARPOSS 3602220005 HYDRAULIC SLIDE CYLINDER VALVE D586478
THERMO SCIENTIFIC 112980-01 HG LAMP KIT FOR MERCURY ANALYZER D588443
HARMONIC DRIVE CSS-25-50-2A-GR-SP GEAR REDUCER COMPONENT SET D591585
HARMONIC DRIVE SH-25-50-2A-GR-SP GEAR REDUCER COMPONENT SET D591582
SIEMENS 6DR5010-0NN00-0AA0 SIPART PS2 I/P POSITIONER D591042
FISHER DVC6020 FIELDVUE VALVE POSITIONER D586025
LIMITORQUE SMB-00 3PH 1700RPM 575V-AC ACTUATOR D562087
TOKAI MATIERIALS 300X60 5KB-D553 BRAKE PAD D592025
LIMITORQUE L120-10 230/460V-AC 3PH VALVE ACTUATOR D598493
WAUKESHA 060 U2 ROTARY LOBE PUMP GEAR CASE ASSEMBLY D546612
KOCSIS CMO-308084-A HYDROTOR HYDRAULIC MOTOR CRANKING STARTER D596584
GOULDS 3196 MT CENTRIFUGAL IRON PUMP POWER END D594038
FLOWSERVE EK1144 SL-5000 2.875 CW PUMP SEAL KIT D561392
ROTORK 11AFA10A 575V-AC 0.24HP 50LB-FT ELECTRIC VALVE ACTUATOR D562379
FISHER 29A3667X022 CONTROL VALVE SEAT RING D531461
INGERSOLL C06568-02-00-728 21 IN OD CENTRIFUGAL BRASS PUMP IMPELLER D532959
MORIN B-023U-D000 STAINLESS ROTARY VALVE ACTUATOR D591927
EL-O-MATIC ES1600.U1A04A.46K0 PNEUMATIC ACTUATOR VALVE REPLACEMENT PART D599271
EL-O-MATIC ES1600.U1A04A.46K0 PNEUMATIC VALVE ACTUATOR 116PSI D599521
GEA BLOUUOOCV0320 TUCHENHAGEN STAINLESS SANITARY ACTUATOR D566185
EIM 9H5753FC-D ROTORY VALVE ACTUATOR CONTROLLER ASSEMBLY D578308
VALVCON VW600KS2TN115AC ELECTRIC VALVE ACTUATOR 115V-AC D579477
SUNDSTRAND MCV104A5901 ELECTOHYDRAULIC PUMP STROKE CONTROLLER D591615
SUNDSTRAND MCV104A5902 ELECTRONIC DISPLACEMENT CONTROLLER D598870
DEZURIK 425939T ACCUTRAX CONSISTENCY TRANSMITTER PIPELINE MODULE D593259
FLOWSERVE PRESSURE REDUCING PUMP SHAFT SLEEVE D583894
GOULDS 3196 MTX 3X4-13 IRON PUMP POWER END D599255
WEIR WARMAN E4110A05 SLURRY PUMP VOLUTE LINER D599771
FLOWSERVE CE4A2TAX CENTURA CE ROTARY VALVE ACTUATOR 115V-AC D595402
JOHN CRANE 1-RBA20771 CFSP-101317 TYPE 88SRS 2.125IN PUMP SEAL KIT D564732
FLOWSERVE 134625-GS DURA SEAL CARTRIDGE PUMP SEAL ASSEMBLY D522737
ANDCO 8417T POSI-TORK ELECTRIC LINEAR ACTUATOR 1.26HP 230/460V-AC 38IN D586468
MOYNO TS A2A5000 10IN STAINLESS PUMP ROTOR D587612
FISHER 3582 VALVE POSITIONER 3-15PSI D585782
PACO K0312-1 GENUINE PARTS KIT D574487
LIMITORQUE L120-10 MULTI-TURN ELECTRIC VALVE ACTUATOR D559551
MASONEILAN DRESSER SVI2-21123111 SVI-II DIGITAL VALVE POSITIONER 150PSI D597302
