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
Siemens 3UF5021-3BN10-1 3UF50213BN101 Basic Unit Profibus-DP
SIEMENS 3UN21310AN7 COLD LADDER RELEASE DEVICE
Siemens 3VA99870UA10 External Expansion Module EFB300
Siemens 3VE10002B circuit breaker
Siemens 3VE10002C Circuit Breaker
Siemens 3VE10002D motor circuit breaker
Siemens 3VE10002E motor circuit breaker
Siemens 3VE10102C circuit breaker
Siemens 3VE30002KA00 motor circuit breaker
Siemens 3VE42000CM00 circuit breaker
Siemens 3Ve42000cp00 Line Switch
Siemens 3VF31111FN410AC1 Circuit Breaker
Siemens 3VL1716-2DA33-0AA0 3VL17162DA330AA0 Circuit Breaker
Siemens 3VL1716-2DA33-0AA0 3VL17162DA330AA0 Circuit Breaker
Siemens 3Vl27161sb330aa0 Circuit Breaker
Siemens 3VL41402KE302GB1 Line Switch
Siemens 3Vl92004tc30 frame clamps for CU /un
Siemens 3VL93008CA30 Connection Cover
Siemens 3VL93354TC31 Frame Clamps
Siemens 3vl98002ac00 Kit Auxiliary Switch
Siemens 3VL98004EC30 Front Connection Rails
Siemens 3VL98008CA30 connection cover for VL1250, VL1600 /sealed
Siemens 3VT3 3VT3763-2AA36-0AA0 3VT37632AA360AA0 Circuit Breaker w/ Scratches
Siemens 3VT3 3VT3763-2AA36-0AA0 3VT37632AA360AA0 Circuit Breaker w/ Scratches
Siemens 3VU13000MG00 Motor Circuit Breaker
Siemens 3VU13001MF00 Circuit Breaker
Siemens 3VU13001MM00 Circuit Breaker
Siemens 3VU1340-1ML00 3VU13401ML00 Contactor
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SIEMENS 3WX31846JA00 ACCESSORIES FOR SWITCHES 3WN
Siemens 420 6SE6420-2UD24-0CA1 Micromaster
Siemens 420 6SE6420-2UD24-0CA1 Micromaster
Siemens 4AM5242-1WT10-0FA0 4AM52421WT100FA0 0,63 kVA/ 2,35 kVA Transformer
Siemens 4AM5242-1WT10-0FA0 4AM52421WT100FA0 0,63 kVA/ 2,35 kVA Transformer
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SIEMENS 4NC14310CE21 CLIPON CONVERTER Class 1 Original Box/Un
Siemens 4NC5121-2CC21 4NC51212CC21 Window Current Transformer
Siemens 4NC5121-2CC21 4NC51212CC21 Window Current Transformer
Siemens 545 545-1101 Module
Siemens 545 545-1101 Module
Siemens 570611.9002.03 Board
Siemens 570611.9002.03 Board
Siemens 5SF1005 DIAZED 4 PCS Socket
Siemens 5SM33466 FI circuit breaker
Siemens 5SM36126 FI Circuit Breaker
Siemens 5SN71320KA30 N AC Machine
Siemens 5SU13566KK06 Switch
Siemens 5sw3300 auxiliary current switch
Siemens 5SX23013 line circuit breaker
Siemens 5SX23043 line circuit breaker
Siemens 5SX23083 line circuit breaker
Siemens 5SZ74260KA30 FAULT CURRENT CIRCUIT BREAKER
Siemens 5TR1130 PACCO Switch
Siemens 6171JC200 209 750102002 3 15 S_C-N4 SIMATIC OP17 Board AS IS
Siemens 6171JC200 209 750102002 3 15 S_C-N4 SIMATIC OP17 Board AS IS
Siemens 6AP63021BA310AA1 Type ES3021/
Siemens 6AV3 607-1JC20-0AX1 Operator Panel AS IS Detached Back Cover
Siemens 6AV3 607-1JC20-0AX1 Operator Panel AS IS Detached Back Cover
Siemens 6AV3590-1RR32 Operator Panel OP30/B
Siemens 6AV3590-1RR32 Operator Panel OP30/B
Siemens 6AV6 643-0CD01-1AX1 6AV6 6430CD011AX1 Touchscreen Panel AS IS
Siemens 6AV6 643-0CD01-1AX1 6AV6 6430CD011AX1 Touchscreen Panel AS IS
Siemens 6AV6 643-0CD01-1AX1 6AV66430CD011AX1 Touch Interface Panel
Siemens 6AV6 643-0CD01-1AX1 6AV66430CD011AX1 Touch Interface Panel
Siemens 6AV7661-1AA10-4BS0 Simatic Panel PC w/ Missing Button No Display
Siemens 6AV7661-1AA10-4BS0 Simatic Panel PC w/ Missing Button No Display
Siemens 6AV7724-2BC30-0AD0 SIMATIC PC w/ A5E00338527 Touch Panel
Siemens 6AV7724-2BC30-0AD0 SIMATIC PC w/ A5E00338527 Touch Panel
SIEMENS 6ED10521MD006BA7 LOGO! 12/24RCE
SIEMENS 6EP13311SL11 SITOP Power Supply 2A
Siemens 6EP13332AA00 SITOP Power 5
Siemens 6EP13333BA00 SITOP PSU200M
SIEMENS 6EP13342BA00 SITOP Power 10 Power Supply
SIEMENS 6EP13342BA20 SITOP PSU100S 24V/10A
Siemens 6EP1334-3BA10 6EP13343BA10 SITOP PSU200M Power Supply
Siemens 6EP1334-3BA10 6EP13343BA10 SITOP PSU200M Power Supply
SIEMENS 6EP13362BA10 SITOP PSU100S
Siemens 6EP14342BA20 SITOP PSI300S
Siemens 6EP14362BA00 SITOP Power 20
SIEMENS 6EP14363BA00 SITOP Netzteil
Siemens 6EP14363BA00 SITOP Power Suppley
SIEMENS 6EP14363BA00 SITOP Power Supply
SIEMENS 6EP14363BA00 SITOP Power Supply
SIEMENS 6EP14363BA00 SITOP Power Supply OVP/un
Siemens 6EP1437-2BA10 6EP14372BA10 SITOP Power 40
Siemens 6EP1437-2BA10 6EP14372BA10 SITOP Power 40
Siemens 6EP1913-4WL01 4AP2195-0AG70-8A Autotransformer
Siemens 6EP1913-4WL01 4AP2195-0AG70-8A Autotransformer
Siemens 6EP1933-2EC51 6EP19332EC51 SITOP UPS500S Power Supply
Siemens 6EP1933-2EC51 6EP19332EC51 SITOP UPS500S Power Supply
Siemens 6ES5 095-8MD03 6ES50958MD03 Simatic S5 Compact Controller
Siemens 6ES5 095-8MD03 6ES50958MD03 Simatic S5 Compact Controller
Siemens 6ES5-095-8MC02 6ES50958MC02 PLC Module w/ EPROM
Siemens 6ES5-095-8MC02 6ES50958MC02 PLC Module w/ EPROM
SIEMENS 6ES53730AA81 Memory Module EPROM 128KBYTE
Siemens 6ES57767LA13 Simatic S5 Power Output
Siemens 6ES59517LB14 SIMATIS S5 Power Supply
Siemens 6ES7 1324BB010AA0 SIMATIC DP
Siemens 6ES7 214-1BE30-0XB0 6ES72141BE300XB0 SIMATIC S7-1200 CPU Unit
Siemens 6ES7 214-1BE30-0XB0 6ES72141BE300XB0 SIMATIC S7-1200 CPU Unit
Siemens 6ES7 314-5AE03-0AB0 DC24V
Siemens 6ES7 314-5AE03-0AB0 DC24V
Siemens 6ES71321BL000XB0 Simatic DP
Siemens 6ES71326BD200BA0 SIMATIC ET 200SP ORIGINAL BOX/SEALED
SIEMENS 6ES71511AA050AB0 SIMATIC DP Interface Module
SIEMENS 6ES71511CA003BL0 + 6ES71934DL100AA0 + 6ES71934FL100AA0
Siemens 6ES71513BA230AB0 + 6 Modules
SIEMENS 6ES71556BA000CN0 SIMATIC ET 200SP /sealed
Siemens 6ES71957HA000XA0 Simatic DP Bus Module
Siemens 6ES71957HA000XA0 Simatic DP Bus Module
Siemens 6ES72121AE310XB0 Simatic S71200 CPU 1212C
SIEMENS 6ES72141AD230XB0 SIMATIC S7200 CPU
SIEMENS 6ES73071EA000AA0 Power Supply
SIEMENS 6ES73141AE040AB0 Simatic S7300 CPU 314
SIEMENS 6ES73211BH010AA0 Digital Input SM 321
SIEMENS 6ES73211BH020AA0 Digital Input SM 321
SIEMENS 6ES73221BH010AA0 Digital Edition SM 322
SIEMENS 6ES73221BL000AA0 Digital Output Flap Missing
SIEMENS 6ES73221BL000AA0 Digitalausgabe Klappe fehlt
SIEMENS 6ES73221BL000AA0 SIMATIC S7300 Digital Edition
SIEMENS 6ES73221BL000AA0 SIMATIC S7300 Digitalausgabe
Siemens 6ES7400-2JA10-0AA0 6ES74002JA100AA0
Siemens 6ES7400-2JA10-0AA0 6ES74002JA100AA0
Siemens 6es74211bl010aa0 s7 Digital Input
Siemens 6ES76477AA100QA0 SIMATIC Microbox PC 427B
Siemens 6ES76477BA202XM0 SIMATIC IPC427C Microbox PC
Siemens 6ES76477BA304XN0 SIMATIC IPC427C Microbox PC
SIEMENS 6EW13804AB01 Power Supply E: 3
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