福建中立恒自动化设备有限公司
一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。
它采用可以编制程序的存储器,用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令,并能通过数字式或模拟式的输入和输出,控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体,易于扩展其功能的原则而设计。在工业生产的各个领域,机械加工企业为了提高生产效率,采用机械化流水作业的方式,对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代,生产线承担的加工对象也随之改变,这就需要改变控制程序,使生产线的机械设备按新的工艺过程运行,而继电接触器控制器系统是采用固定接线,很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多,随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。
发展趋势:1.向高速度、大容量方向发展
为了提高PLC的处理能力,要求PLC具有的响应速度和更大的存储容量。目前,有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。
在存储容量方面,有的PLC可达几十兆字节。为了扩大存储容量,有的公司已使用了磁泡存储器或硬盘。
2.向超大型、超小型两个方向发展
当前中小型PLC比较多,为了适应市场的多种需要,今后PLC要向多品种方向发展,特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC,其使用32位微处理器,多CPU并行工作和大容量存储器,功能强。
以下链接皆有货
Partner RP-320 RP320 Receipt Printer w/ 1pc Roll, Adapter & Cables 24V 2.5A
Parts Plus 20-69989 Power Steering Pump
Parts Plus 20-69989 Power Steering Pump
Parts Plus 311101 Water Pump
Parts Plus 311101 Water Pump
Parts Plus P513188 Wheel Hub Assembly
Parts Plus P513188 Wheel Hub Assembly
Parts Plus P56242 Brake Rotor
Parts Plus P56242 Brake Rotor
Parts Plus P56707 BD125505 Brake Rotor
Parts Plus P56707 BD125505 Brake Rotor
Patleds CLA3S-24 Color CD 24VDC 240mA
Patleds CLA3S-24 Color CD 24VDC 240mA
Patlite BC-24LG BC24LG Alarm/Buzzer 12/24VDC 5W
Patlite EW-200KA EW200KA Warning Light & Alarm 200V AC
Patlite GM-1200R3-W GM1200R3W Signal Display w/ Breakage DEFECTIVE
Patlite LME-FBL LMEFBL Signal Tower Light 24V AC/DC
Patlite LU702 Signal Column Element 24V DC
Patlite P21110400 BD-100-B Board
Patlite P21110400 BD-100-B Board
PB-2013 V1.0 Board
PB-2013 V1.0 Board
PB462003-0186 Module
PB462003-0186 Module
PB462003-0225 Module
PB462003-0225 Module
PC 52-04-006 P86M-94V-0 Module Cards U
PC 52-04-006 P86M-94V-0 Module Cards U
PC01254D 70CVB01254 E Board
PC01254D 70CVB01254 E Board
PC-0184-0 05-0169-0 A.00 Module
PC-0184-0 05-0169-0 A.00 Module
PC-2079-1 PC20791 Board U
PC-2079-1 PC20791 Board U
PCA SYN CS 865-2717-01 w/ MSD-3488601-TTL RF SRC MODULE U module cover missing
PCA1.W12Z10 4 425 4889 0 F2 D NSA.B9618 Board
PCA1.W12Z10 4 425 4889 0 F2 D NSA.B9618 Board
PCA2017-11 I/O Connection Board
PCA2017-11 I/O Connection Board
PCA288035 PCB 265439 Rev A TOC/PC Interface Board
PCA288035 PCB 265439 Rev A TOC/PC Interface Board
PCA-6276 PCA6276 REV.B1 1906627604 Industrial System Mother Board
PCB 00120001 Circuit Board 3 Business Days
PCB F484B02 ICP Sensor Signal Conditioner
PCB F484B02 ICP Sensor Signal Conditioner
PCB INVERTER+S.SW 6KVA Board
PCB INVERTER+S.SW 6KVA Board
PCB RB8-100 RB8100 Boards Assy w/ Relay U
PCB RB8-100 RB8100 Boards Assy w/ Relay U
PCB2016 REV 3 Board
PCB2016 REV 3 Board
PCB9 945-236 RS485 Backplane Board
PCB9 945-236 RS485 Backplane Board
PCB-937 PCB937 Board
PCB-937 PCB937 Board
PCE Typ 02 IP44 32A-6h/380-415V~ / 3P+ E/50+60Hz
PCE Typ 02 IP44 32A-6h/380-415V~ / 3P+ E/50+60Hz
PCIB40 515/68 STR.900611 PCIB4051568STR900611 Module Board
PCS GoodPlus Quickscan 6000 Barcode Scanner w/ Cut Cable & Peeled Off Cover
PCS Power 1KVA As Is
PCS Power 1KVA As Is
PD 45 1160 000 19 2828 000 Board
PD 45 1160 000 19 2828 000 Board
PDA1 V2.0 2-Channel Display Controller
PDA1 V2.0 2-Channel Display Controller
PDL Electronics Xtravert X716 Drive
PDL Electronics Xtravert X716 Drive
Peak Meter PM2302 Digital Earth Resistance Tester
Peak Meter PM2302 Digital Earth Resistance Tester
Peak Wide Stand Micro w/ 10x Lens 4x NA 0.115 Lens
PeeiMoger M5IK90USFT with G5U20K Engines
PeeiMoger M-5RK600-CFS M5RK600CFS Motor
PeeiMoger M-5RK600-CFS M5RK600CFS Motor
PeeiMoger M-5RK60U-CFS M5RK60UCFS Servo Motor
PEF-825 PEF825 Board
PEF-825 PEF825 Board
PEF-834 PEF834 Board
PEF-834 PEF834 Board
Pelco PMCL417A 17" TFT LCD Surveillance Monitor AC100-240V 50-60Hz 0.9A
PENN D DT S0810M w/ Damage
PENN D DT S0810M w/ Damage
Pentair 2312270029 O2 Sensor
Pentax SMC PENTAX-F ZOOM 1:3.5-4.5 35-135mm Lens
Pentax SMC PENTAX-F ZOOM 1:3.5-4.5 35-135mm Lens
Pentax SMC PENTAX-F ZOOM 1;3.5-4.5 35-135mm 30Days Warranty
PEPPERL & FUCHS IVIKHD24HB1 27982 VariNetP
PEPPERL & FUCHS IVIKHD24HB6 43261 ProfibusDP
PEPPERL & FUCHS KHA6RW1/Ex1 19005S KSeries
PEPPERL & FUCHS Type KDF2SOTEx1 Disconnect Circuit Amplifier
PEPPERL & FUCHS Type NJ40FPA2B1P1 Inductive Proximity Switch Sensor
PEPPERL + FOX KCD2R KSeries
Pepperl + Fox KCD2RREX1 Resistance Repeater 190247
Pepperl + Fox KFD0SD2EX1.1045 valve control module 133240
PEPPERL + FOX KFD22R2Ex1.W switching amplifier 132958
Pepperl + Fox KFD2EB2 189783 feedin module
PEPPERL + FOX KFD2FSUEx1 switching amplifier, time relay 33922
PEPPERL + FOX KFD2PT2Ex1 potentiometer transducer 72018
PEPPERL + FOX KFDOCS2.50 repeater 126992
PEPPERL + FOX KFDORSH1 signal isolator 106793
Pepperl + Fox NJ15 U1 + E2 proximity switch
Pepperl + Fuchs HID 2881 1 Channel Isolating Solenoid
Pepperl + Fuchs HID2026SK 121434 2 Channel Smart Analog Input Repeater
Pepperl + Fuchs HIDTB16-UNI-DA32-SD37-SC 195058 Terminal Board
Pepperl + Fuchs HIDTB16-UNI-SC-SC 195046 Terminal Board
Pepperl + Fuchs HIS 2700-G 131008 32 Channel Hart Multiplexer
Pepperl + Fuchs KFD2EB2 feed module 43546
PEPPERL&FUCHS Capacitive Sensor NJ412GKN
PEPPERL&FUCHS KFD2GUTEx1.D Temperature Transducer 113604
PEPPERL&FUCHS VAA4AG2E2 Interface Sensor Module
PEPPERL+FOX KFD2CDEx1.32 Power/Voltage Output Driver 71763
PEPPERL+FOX KFD2CREx1.30340 Transformer isolated Repeater 116316
PEPPERL+FOX KFD2GS1.EU.L.Z current/voltage limit switch 32615
Pepperl+Fuchs AVM58N086AARHGN1212 incremental encoder