编程者经常违背的规则中有一条是“简单化原则”。，如果程序简单，则是容易写出，容易检查的，而且是很少会出错的。不是所有情况都要求7位精度或好的控制。本页给出的绿棚说明了一个在学校中学到的基本原理是如何用来有效而廉价地解决问题的。本例中，双金属条用来检测周围温度。这可以是一个控制所有窗户的大型商业绿棚，或是有一个窗户的花园绿棚。本例是控制四扇窗户，每扇窗户有一检测温度的双金属条，对每个双金属条，存在两个输入，一个对应金属条冷的情况，这可以认为是常闭的，另一个对应金属条热的情况，即它变形时，可认为是一个常开接点，。这些输入与窗户位置有直接联系，如果过热，双金属条弯曲，触点接通，于是窗户打开。当绿棚部分变冷时，双金属条伸直，窗户关上。是
输入端的一次电路与二次电路之间采用光电耦合隔离。二次电路带R-C滤波器，以防止由于输入触点抖动或从输入线路串入的电噪声引起可编程控制器的误动作。
CM150TU-12H CM150TU12H
A1SX41
为了防止由于干扰或锂电池电压不足等原因破坏RAM中的用户程序，可选用EPROM写入器，通过它将用户程序固化在EPROM中。有些PLC或其编程器本身就具有EPROM写入的功能。
（1）可编程控制器有继电器输出、晶闸管输出、晶体管输出三种形式。
PLC的通信包括主机与远程I／O之间的通信、多台PLC之间的通信、PLC与其他智能控制设备(如计算机、变频器、数控装置)之间的通信。PLC与其他智能控制设备一起，可以组成“集中管理、分散控制”的分布式控制系统。
不同类型的信号分别由不同电缆传输，信号电缆应按传输信号种类分层敖设，严禁用同一电缆的不同导线同时传送动力电源和信号，避免信号线与动力电缆靠**行敖设，以减少电磁干扰。
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本公司专业销售全球**品牌备品备件
GROVE GEAR 362368 FLEXALINE 3.083HP 10:1 56C WORM GEAR REDUCER D508248
2 Furon st Gobin UPM2-F1212-M SP, 952452, PTFE 2 way diaphragm valves
Kinetics Gas Line, APTech AP1010SM, Ametek Gauge, Pall Filter, Ham-Let Valve
PSC 1268187 STEEL SUPPORT CAP 10-1/4IN OD 6-1/2IN ID D334555
Warranty PARKER ELECTRO HYDRAULICS PC BOARD SERVO AMPLIFIER 830001-101 BD90
FANUC A03B-0807-C107 AIA16G INPUT MODULE QUANTITY
ALLEN BRADLEY POWERFLEX 70 480V SERVO DRIVE 15HP 20AC022A0AYNANC0
TU43 Netzplatine LWL E110 327 B329
GLOBE GEAR 5-3/8IN OD 1-1/4IN BORE GEAR D400397
WESTINGHOUSE 4256A88G04 PCB CIRCUIT BOARD D465231
LOT 3 FOXBORO ASSORTED CM902WL IPM2-P0904HA I/A SERIES
AMAT 0040-40717 Blankoff, FDP Shroud
SVG SENSOR MULTIPLEXOR 99-80270-01, SENSOR MULTIPLEXOR MOTHER BOARD 99-80271-01
SCE SYZ127930 VALVE SEAT INSERT 1-11/16 IN ID 2 IN
Siemens Sirius 3R 3RT1026-3A Magnetic Contactor
ALLEN-BRADLEY 700-PT200A1 RELAY WITH PNEUMATIC TIME DELAY 120V
FANUC aM30/3000i 4.3kW AC SERVO MOTOR A06B-0267-B605, LISTING #4
DD992 Frequenzumrichter Lenze EVF8203-E 33.8203 1,5KW 0-480Hz OVP
GATES 8M-1400-36 POLY CHAIN GT 1400MM 36MM 8MM TIMING BELT D435298
Transformers (248)
414-0611-001 415-0611
CC/940/CB/78.75/Z/T 78-3/4IN STROKE 4-1/4IN BORE PNEUMATIC CYLINDER D412929
3 Swagelok SS-FL4RM4RM4-24 AMAT 3400-01885 convoluted, flexible, SS, hose
ConFLAT 2 1/4 X 1 1/8 REDUCER FLANGE with 1/4 INCH VCO PORT
RIESTERER DNM01-B-0009 SPRING 19X14X139X7MM D253159
WARRANTY MOOG CNC BRUSHLESS SERVO MOTOR 304-004 304-0040
TELEMECANIQUE XCS-A803 NEW!! QUANTITY! 3N.C. 240V 3A SAFETY INTERLOCK SWITCH
FANUC 3-OS AC SERVO MOTOR 3000RPM A06B-0533-B551
HT92 Indramat TCM 1.1-08-W0
PALL HC7400SDP4H 7400 SERIES SPIN-ON HYDRAULIC FILT
YOKOGAWA AS E7000HK-02 A0512364 E7000HL-02 PCB CIRCUIT BOARD D466360
TELEMECANIQUE TBXBLP01 MOTOR ConTROL ConNECTOR BLOCK
2 AMAT 0190-15148 Flow Controller
SPAN Pressure Display APR 96
ROSS W7076A4954 120V-AC SOLENOID VALVE D518756
Yamatake-Honeywell 81401820-041 Control Circuit Board
THK SR15TB2SS+640L 1 RAIL 2 BLOCKS LINEAR BEARING D505001
UNI-PRO CPU91-E93 LOGIC BOARD 20.004171-02
HT855 Brankamp Marposs Widatronic Processa BCS-4A
HOFFMAN F22W24 STRAIGHT SECTION WIREWAY ENCLOSURE
NUMATICS 68JDSPA34 115/120V-AC 1/2 IN NPT SOLENOID VALVE D374084
GORMAN RUPP 15076-001 X-125 T-09 115V-AC METERING PUMP
AMAT 0150-04600 CABLE ASSY, AI/O BLOCK, WAFER LOADER
NEW AMAT 0190-40092 MSE SEAL ASSEMBLY, PEEK
Bosch Rexroth 5/2-way valve Series RA18 0 820 230 103 (0820230103)
Northern Telecom QPP373A Power Supply
BANNER MINI SCREEN GMMSDINT-1L2 ConTROL MODULE QUANTITY!!
AUTOMATIC VALVE L2003DALN, DETENTED FOOT TREADLE EXHAUST VALVE, 1/4" NPT, NNB
PP91 Feldbuskoppler Wago 750-316
AVAYA TN2602AP MEDIA RESOURCE 320 PCB CIRCUIT BOARD
VICKERS 941853 HYDRAULIC VALVE SUB ASSEMBLY D490266
ALLEN BRADLEY 102822 REV 03 PCB CIRCUIT BOARD D521994
12" Vacuum Tube KF50
Fujikin 316L-P, 0050-03140 P2, O.P. 4~6gf/cm6(0.39~0.59), 3 Way Valve. 415393
SENIOR FLEXonICS FLT-200-AK-048.0 48IN LENGTH 2IN NSENIOR FLEXonICS FLT-200-AK-048.0 48IN LENGTH 2IN NPT STAINLESS HOSE D497745
Moore Industries DDA/4-20MA/DH1L1/24DC-DPSTNO-GR Direct Current Alarm
ECA 8-590 2A 120VAC 1A 240VAC PHOTOELECTRIC SWITCH EM-RELAY FOR 5000 SERIES
TOX PRESSOTECHNIK EDC COMPACT 0610520IF120245B
TU854 Lorenz Me?technik GM61
JM CLIPPER 10859-PD OIL-SEAL D461162
VCI AP 2 DA 1/2 IN NPT PNEUMATIC STAINLESS THREADED BALL VALVE D498115
FCC FLOW ConTROL COMPonENTS 12 IN 150 STAINLESS FLANGED
AMAT 0020-46541, base Ring, 200mm, Multi-Zone, 395598, 395599, 3955600, 3955601
Evans Component NB-GL-8C-200-X, Manual Valve, Manifold. 415926
PSC 215977 68TOOTH 3-1/2IN BORE SPUR GEAR REPLACEME
Parker Skinner 73212BN4TNLVN0HZ11C2 24 DC Fluid Control Div
ALLEN-BRADLEY 1492-CB2G070 CIRCUIT BREAKER 7A 2 POLE
PROFACE DIGITIAL GRAPHIC PANEL GP230-LG11
X31 Tippkemper ISD-2N-024-12 Optischer Sensor ex 504159567883
MARTIN 60BTB24 2012 BUSHED TAPER SINGLE ROW CHAIN S
NUMATICS I12BB615MP00061 150PSI PNEUMATIC AIR 24V-DC SOLENOID VALVE D309045
7CP470.60-2
ARMSTRONG 22-088 IMPACT SOCKET 6PT 1 IN DRIVE 2-3/4 IN
AMAT 0021-02257 ICP Clamp Bracket 402091
NEW AMAT 0190-04613 Hose Assymbely HEAT EX suply/LID IN CH D PH I
SMC NAL460 150PSI 3/8 IN NPT PNEUMATIC LUBRICATOR D
IAI SCON-C-200A-NP-3-2 Controller, IAI ACTUATOR ConTROLLER SCON-C-200A-NP-3-2
TURCK BI5-G18-AN6X50MM 10-30V-DC 200MA PROXIMITY SENSOR D502081
ITT FABRI VALVE SIZE 6 KNIFE GATE VALVE 8961703
HA546 Telemecanique TSX LES 20
LOT 70 HK SYSTEMS B50110 STEEL BUSHING 1-3/8IN OD 1/2IN HEX BORE D383931
WESTINGHOUSE 251S44 7448 SEMIConDUCTOR THYRISTOR D512676
LOT 26 SELECT-A-SPRING ASSORTED LENGTH 7/16X1/4X1/1LOT 26 SELECT-A-SPRING ASSORTED LENGTH 7/16X1/4X1/16IN SPRING D308355
AMAT 0010-20159 Assy 5" Heater VCR w/TC 5500
Gas Pipeline, MKS 1159B-13197, 121002-G2, 0010-13150, Swagelok SS-DLV51, Pall
FESTO BECK DIGITAL INPUT IM12-H01-P16 PS1-IM12 PM972001-201122
Sick Optic Electronic C2000 C20S-120103A11 1016594 Type 2 Sender Light Curtain
ALLEN-BRADLEY 1492-CB3-G050 SER.B TESTED! 5A 3POLE CIRCUIT BREAKER
TELEMECANIQUE EXTENSION ConTROL MODULE TSX LES 20
KE26 Visolux Lichtschranke RLF 21-8-800-1419 Photoelectric Sensor
BURKERT 00138446 2031 A 25 ASSEMBLY 1/4IN NPT DIAPHRAGM VALVE D329691
WESTINGHOUSE KX-44 1732383 RECORDING FREQUENCY METER 120V-AC D520254