一、简述
多年来，可编程控制器（以下简称PLC）从其产生到现在，实现了接线逻辑到存储逻辑的飞跃；其功能从弱到强，实现了逻辑控制到数字控制的进步；其应用领域从小到大，实现了单体设备简单控制到胜任运动控制、过程控制及集散控制等各种任务的跨越。今天的PLC在处理模拟量、数字运算、人机接口和网络的各方面能力都已大幅提高，成为工业控制领域的主流控制设备，在各行各业发挥着越来越大的作用。
二、PLC的应用领域
目前，PLC在国内外已广泛应用于钢铁、石油、化工、电力、建材、机械制造、汽车、轻纺、交通运输、环保及文化娱乐等各个行业，使用情况主要分为如下几类：
1．开关量逻辑控制
取代传统的继电器电路，实现逻辑控制、顺序控制，既可用于单台设备的控制，也可用于多机群控及自动化流水线。如注塑机、印刷机、订书机械、组合机床、磨床、包装生产线、电镀流水线等。
2．工业过程控制
在工业生产过程当中，存在一些如温度、压力、流量、液位和速度等连续变化的量（即模拟量），PLC采用相应的A/D和D/A转换模块及各种各样的控制算法程序来处理模拟量，完成闭环控制。PID调节是一般闭环控制系统中用得较多的一种调节方法。过程控制在冶金、化工、热处理、锅炉控制等场合有非常广泛的应用。
输入和输出状态,
限制和时间值可以通过
OPC-DA传播,PROFIBUS
DP或MODBUS
控制和可视化系统。带有时间戳的事件——修玛信号
,这是——通过RS485告警事件传播。
综合诊断程序确保快速误差信号和简单的故障
,甚至对未经训练的人员。远程诊
断是可能的与通信选项。
Planar4亮点使用SIL4 平均无故障时间
> 200年开关时间2 - 10毫秒
可伸缩的冗余通过OPC通信
,PROFIBUS DP网络通讯协议
监测开放和短路节省空间的19技术
Teachbox MOTOMAN MRC
MOTOMAN-Yaskawa Converter JUSP-ACB05JAA
Motoman Teachbox DX JZRCR-YPP01-1 NEU
MOTOMAN Servopack MRC Einzelachse CACR-IR30
MOTOMAN-Yaskawa Servopack JUSP-UP20AAA inkl. WRCA / RCP
MOTOMAN-Yaskawa Servopack JUSP-WS60AB
MOTOMAN-Yaskawa Servopack JUSP-WS10AB
MOTOMAN Servopack MRC Einzelachse CACR-IR10
MOTOMAN XRC JARCR-XOI 02
MOTOMAN XSU02 NEU !
MOTOMAN-Yaskawa Servopack JUSP-WS02AB
MOTOMAN Servopack MRC Einzelachse CACR-IR44
MOTOMAN-Yaskawa Servopack JUSP-UP6AAC inkl. WRCA / RCP
MOTOMAN Servopack MRC Einzelachse CACR-IR15
MOTOMAN MRC I/O Karte MIO 03
MOTOMAN MRC I/O Karte MIO 02
NEW NORDSON 108908A
KEITHLEY 2700 MULTIMETER/ DATA ACQUISITION SYSTEM
KEITHLEY 2000 6.5 DIGIT DIGITAL MULTIMETER INCLUDES 2000-172-01A CARD
HP HEWLETT PACKARD AGILENT 34401A DIGITAL MULTIMETER
FANUC A16B-1010-0331/04A BOARD A16B-1010-0331
INDRAMAT ECO DRIVE DKC11.3-040-7-FW
POWERSTAT 3PN116B VARIABLE TRANSFORMER 0/140V 7.5A 1PH
FOWLER 52-785-100 DIAL BORE GAUGE
CREST GENESIS ULTRASonIC GENERATOR 4G-500-6T 240 VOLTS 4 AMPS
ATC 422A 100 F 35X 422A100F35X CYCLE TIMER
NEW FIRE SENTRY MODULE FLAME DETECTOR FS10-R30
BROWN & SHARP ROTARY GEARED PUMP 713-10-7 NO. 1S
NEW OMEGA TYPE K PILYVINYL WIRE 25' EXPP-K-20S-25/N THERMOCOUPLE WIRE
FANUC A02B-0094-B501 SERIES-15 TA I/O RACK A16B-1100-0310/04A
FANUC SERVO AMPLIFIER MODULE A06B-6079-H106 REFURBISHED TESTED
SIEMENS 6SN1118-0DM21-0AA0 SIMODRIVE
NEW TUTHILL PUMP CHICAGO 30LE-7 HYDRAULIC PUMPS 3/8"
GOULD AO-1120-000 AO1120
NEAT SCANNER NR-030108 PORTABLE MOBILE SCANNER WITH HARD CASE
PACIFIC SCIENTIFIC SC904 SERVO DRIVE
BALDOR CDP3330 1/2HP 90V-DC 1750RPM 56C DC ELECTRIC
NEW SEALED ALLEN BRADLEY 1794-PS3 /A SERIES A POWER SUPPLY
GE FANUC IC697CPU711 N MODEL 70 CPU771 CENTRAL PROCESSING UNIT
OKUMA E4809-770-018-B OPUS 5000 II SVP
EDMUND OPTICS TML 0.20X TELECENTRIC LENS HOYA HMC 58MM R(25A) 63073 EO 0.2X TML
WAVETEK 182A 4 HZ FUNCTION GENERATOR
ROSEMOUNT PT100_385 TEMPERATURE TRANSMITTER 644RANAF6
COGNEX IS5110-00 825-0059-1R C IN-SIGHT
GAST R-AD665 AIR MOTOR
SIEMENS CPU 214 MODULE SIMATIC 24V DC S7-200 6ES7 214 1AC00-0B0
BECKHOFF BK9000 ETHERNET TCP/IP BUS COUPLER
HonEYWELL 30752787-002 PC BOARD 30752787002
NEW JOHNSON ConTROLS M9220-GGC-3 24V S/R PROP ACTR 2SW 177INLB
NEW ALLEN BRADLEY 314232-A01 POWERFLEX 700 ENCODER CIRCUIT BOARD
DATA INSTRUMENTS DIPRO 1500 WINTRISS DIE PROTECTION 9642401 C42356
ATLAS COPCO PF3007-C-HW TENSOR S4/S7 TORQUE CONTROLLER, 90-240 VAC
DRILL DOCTOR DD750SP PROFESSIonAL MODEL DAREX BIT SHARPENER
PARKER C3S075V4F10 C10 T60 M00
FANUC A61L-0001-0093 CRT UNIT 9INCH HIGH RESOLUTION A02B-0091-C042
HEWLETT PACKARD HP 204C OSCILLATOR
FANUC PTO1A A03B-0801-C051
NEW ASCO 8210G094 SOLENOID VALVE
AUTOMATION ENGINEERING PROGRAMMABLE SURGE GENERATOR 0-3 KVDC
VICKERS 10-EEA-PAM-118-A-20 AMPLIFIER BOARD
ALLEN BRADLEY N-3412-2-H00AA BRUSHLESS SERVO MOTOR SER B INCLUDES PS90-025-S2
SIEMENS CPU 214 MODULE SIMATIC 24V DC S7-200 6ES7 214 1AC00
HonEYWELL 82407381-001 BOARD
ALLEN BRADLEY HARDY HI 1771-WS SERIES B WEIGH SCALE MODULE
YOKOGAWA 2533 DIGITAL POWER METER SINGLE-PHASE 253311
YASKAWA 4 AXIS MOTION ConTROL MEMOCON GL120 JAMSC-120MMB10400
LOT OF 13 ALLEN BRADLEY 700-HN122 SERIES A RELAY base WITH 700-HK32Z24-4 RELAY
NEW ALLEN BRADLEY 1760-L12AWA PICO ConTROLLER SER A 1760L12AWA
RKC REX-D100 D100F-VNDN-N6-NN TEMPERATURE CONTROLLER
ALLEN BRADLEY 22B-A5P0N114 SER.A POWERFELX 40 DC DRIVE
NEW SQUARE D DP-4075 30 AMP CIRCUIT BREAKER QO130
NEW SIEMENS 6ES7 360-3AA01-0AA0 SIMATIC S7 PLC INTERFACE MODULES
SIEMENS SIMATIC 6ES5923-3UA11
FANUC A06B-6114-H302 E SERVO AMP MODULE
FANUC A06B-6058-H025 SERVO AMPLIFIER A20B-1003-0090 A350-1003-T084
FANUC A06B-6102-H215 #520 SPINDLE AMPLIFIER MODULE
RELIANCE ELECTRIC SP500 VS DRIVE EASY CLEAN PLUS 2 HP
WATLOW 93BB-1DD0-00GR TEMPERATURE ConTROL 93
HonEYWELL 30752766-001 BOARD
GE FANUC A16B-2100-0110/02A
MOOG 152M423A SERVO MOTOR CONTROLLER
SBC 2Gb RAM 6040-0189 Pentium 4 B9300600AB18710822
CCI-1-0 ConTROL BOARD PN 184249B
OMRON ZE-NA2-2S LIMIT SWITCH
NEW ALLEN BRADLEY 1794-IE8 ANALOG FLEX I/O INPUT MODULE 1794IE8
FAIRWAY INT'L MODEL 1043 VOLTS 120 60 - AMPS 07 LASER LINE
MAGTROL 4618 115 VAC DYNAMOMETER ANALYZER DISPLAY
BANNER MODEL PPCTL INDUSTRIAL CAMERA CONTROLLER
NEW PARKER MG21000B 8 INPUT MODULE
NEW ITT GENERAL ConTROLS THERMOPILOT RELAY A-100G542
FANUC A16B-2202-0730 /04C PC BOARD ConNECTION UNIT
ALLEN BRADLEY 1794-IV16 FLEX I/O SOURCE INPUT MODULE SER A
ROSEMOUNT ANALYTICAL MODEL 1054 ORP ANALYZER 1054OR
ALLEN BRADLEY 1746-NI8 /A SERIES A SLC 500 ANALOG INPUT MODULE
NEW RIKEN KEIKI GX-82 EXTENSION CABLE 5M
GREENLEE UNITEST 5775VS BEHA WIRE SORTER IDENTIFIER WITH CASE
KLOCKNER MOELLER NZM 6B-63 CIRCUIT BREAKER ZM6-63-CNA
ALLEN BRADLEY 2711-KC1 SERIES F PANELVIEW 1200 2711-KC1/F
NEW LOT OF 2 TIMKEN 55437 TAPERED ROLLER BEARING
FLUKE 45 DUAL DISPLAY MULTIMETER
EATON PANELMATE 91-00744-10 92-00585-04 CUTLER HAMMER
WATLOW 93BB-1FD0-00GR TEMPERATURE ConTROL 93
ABB A260-30-11 ConTACTOR 1SF531001R8411
ABB 3HAB2241-1 DSQC-325 ROBOT CIRCUIT BOARD
