VMICVMIPMC-5579熔断器
可编程控制器（programmable logical controller，简称PLC）已经越来越多地应用于工业控制系统中，并且在自动控制系统中起着重要的作用。所以，对PLC的正确选择是重要的。面对众多生产厂家的各种类型PLC，它们各有优缺点，能够满足用户的各种需求，但在形态、组成、功能、网络、编程等方面各不相容，没有一个统一的标准，无法进行横向比较。下面提出在自动控制系统设计中对PLC选型的一些看法，可以在挑选PLC时作为参考。
可以通过以下几方面的比较，挑选到适合的产品。这一点尤为重要。在自动控制系统设计之初，就应该对控制点数（数字量及模拟量）有一个准确的统计，这往往是选择PLC的首要条件，一般选择比控制点数多10%~30%的PLC。这有几方面的考虑：
1、可以弥补设计过程中遗漏的点；
2、能够在运行过程中个别点有故障时，可以有替代点；
3、将来增加点数的需要。
工作环境是PLC工作的硬性指标。自控系统将人们从繁忙的工作和恶劣的环境中解脱出来，就要求自控系统能够适应复杂的环境，诸如温度、湿度、噪音、信号、工作电压等，各款PLC不尽相同。一定要选择适应实际工作环境的产品。
Pc. Helical 5/16"x 1/2" Vari. Pitch High Perf. Carbide End Mills w/C.R-SST,TI
6" Fisher 8560 Posi-Seal STL X SST 150# High Performance Butterfly Valve
6" Fisher A41 Posi-Seal STL X SST CL150 SST Seat Lug Style Butterfly Valve
6" Fisher EK CL125B CI x SST HI TEMP Control Valve 657 Size 50 Actuator
6" Fisher YD 3-Way CL125B CI x SST Control Valve 657 Size 70 Actuator
6004 BEARING 20X42X12MM SST S6004Z (8 PCS)
60s TRIUMPH T100SS T100R T100A T100S T100C GAS FUEL PETROL TANK SHEETMETAL
60SH16H SST QD Quick Detachable #60 Roller Chain 16 T 1-3/4 Bore Sprocket
6203 Z 17 x 40 x 12 mm Metric Bearings - SST - 300 Bearings
627 Fisher Regulator 627W-39 35-80# 1/2" Orifice SST Trim wcb wcc
6314-2RS SST Single Row Ball Bearing
78F516 Panduit - Sst1M-C - Cable Ties
78F517 Panduit - Sst1.5M-C - Cable Ties
78F529 Panduit - Sst1M-M - Cable Ties
78F530 Panduit-Sst1.5M-M-Cable Tie,Releasable,140Mm L,Nylon,Nat,18Lb,Pk1000
78F685 Panduit Sst2S-M Cable Tie, Releasable, 172Mm L, Nylon, Nat, 50Lb, Pk1000
8 AMAT 0020-23277 Lower shields, SST, 8 inch, 101%Tin PA
8 AMAT 0190-03507 Valve, Assembly, Pneu N/C Ball 2 SST W/LIMI
8" 300lb Tensile Strength 316 Stainless Steel Cable Ties 100/bag FAST SHIPPING!
8" Fisher V150 SST Vee-Ball Control Valve DVC6020 AD Positioner 1051/60 Actuator
8591001 Fender Mount, Gray, 20-1/2 In., SST
8591030 Fender Mount Kit Universal, 30-1/4 In, SST
8M-PG4L-SS SST Purge Valve
91128 , Vandergraff STM190A30610NB Conveyor Drum MOTOR, 1 HP SST
92393 Old-Stock, Rome 310434 SST Screw Feed Shaft, 14-1/2" Length
92815 Old-Stock, Urschel 45285 Stripper Plate for M Dicer, 316SST
9315SST BARDEN Single Row Ball Bearing
94F2875 Panduit - Sst1M-M0 - Sta-Strap Releasable Cable Ties
950317 Rev A Equinox SST-4/8P PWR 910317/B PCI Adapter Multiport
950317 Rev B Equinox SST-4/8P PWR 910317/B PCI Adapter Multiport
A Box of Two Fike .50" Disc Type: P UT, SER#: 952 Material: SST
A&N 10-39-SN VACUUM BALL VALVE,PNEUMATIC N/C SST D4150-QF40-AM-P AMAT 0195-02977
A&N LF100-SRV-SM, LF100SRVM Centering Ring With Screen SST LF100 NW100 #1171A21
A52726 SST Valve Seat 2" A17C09A
AB.PLC [Rockwell] SST-PFB-SLC test well
AB.PLC [Rockwell] SST-PFB-SLC.b test well
AB.PLC [Rockwell] SST-PFB-SLC.b test well
AB.PLC [Rockwell] SST-PFB-SLC.b test well #ZL02
AB.PLC [ROCKWELL] SST-PFB-SLC.B TEST WELL 3Y6S
ABB 10A6131NB1 GLOBAL PURGEMASTER 3" SST/VISTON 1/8 VALVE
ABB KENT TAYLOR 840FTV01-9 ELECTRONIC TRANSMITTER SST
Acme Threading Bar # SST 220 3/4" x 7" W/29 deg 5N Acme insert
ADAPTER SPACER FLANGE ISO 250 (10 INCH) BOTH END (SST 304)
Agastat SST120DA Timing Relay Thomas Betts 24vdc Timer 1.8-180 sc 10a 8-pin
AGASTAT SST12AAA SST12AAA
AGASTAT SST12QDA SST12QDA
AGASTAT SST12QDA NSPP SST12QDA
AGASTAT SST22AAA Timing Relay 120VAC + Base
AGASTAT SST22AAA SST22AAA
AGASTAT SST22ADA Timing Relay 120VAC NIB -- FRE SHIPPING !!
AGASTAT SST22AGA SST22AGA
Agastat SST22AGA Time Delay Relay 11 Pin 10A 120V
AGASTAT SST32AAA SST32AAA
AGASTAT TIMING RELAY SST 12AGA, SST12AGA, 18SEC-30MIN, 120VAC
AGASTAT TIMING RELAY SST 72AAA, SST72AAA, 0.1-10SEC, 120VAC
AGASTAT TIMING RELAY SST12AGA 18 SEC TO 30 MIN, 120VAC W/ DINRAIL BASE
AGFA, PRESS, TEKNIC, ECLIPSE, DIDITAL AC SERVO, PART#SST-E750-RCX-4-2-D
Agilent 1530-0364 POST, SST Tubing Mach , part Of Gas Chromatography
Agilent Capillary Heat Exchanger SST 380mm Length 0.17mm id 01090-87306 HPLC
Agilent HPLC 10pc inline filter frit sst 0.5u MV-D-600-0045
Agilent HPLC inline filter frit sst 10u outlet unit MV-D-6268-0031
Agilent N7200-00002 5DX Servo Amplifier Module TDP SST-3000-4
