福建中立恒自动化设备有限公司
目前,世界上有200多个厂家生产可编程序控制器产品,厂家有德国的西门子,美国的Rockwell(AB)、通用(GE),日本的三菱、欧姆龙,法国的施耐德等。
可编程序控制器总的发展趋势是向高集成度、小体积、大容量、高速度、易使用、高性能方向发展。具体表现在以下几个方面:
(1)向小型化、专用化、低成本方向发展
20世纪80年代初,小型PLC在价格上还高于小系统用的继电器控制装置。随着微电子技术的发展,新型器件大幅度的提高功能和降低价格,使PLC结构更为紧凑,功能不断增加,将原来大、中型PLC才有的功能移植到小型PLC上,如模拟量处理、数据通讯和复杂的功能指令等,但价格不断下降,真正成为继电器控制系统的替代产品。
(2)向大容量,高速度方向发展
大型PLC采用多微处理器系统,有的采用32位微处理器,可同时进行多任务操作,处理速度提高,特别是增强了过程控制和数据处理的功能。另外,存储容量大大增加。
(3)与计算机联系密切
从功能上看,PLC不仅能完成逻辑运算,且计算机的复杂运算功能在PLC中也进一步得到利用,从结构上看,计算机的硬件和技术越来越多地应用到PLC;从语言上看,PLC己不再是单纯用梯形图语言,而且可用多种语言编程,如类似计算机汇编语言的语句表,甚至可直接由计算机语言编程;在通讯方面,PLC与计算机可直接相连并进行信息传递。
(4)发展多样化
可编程序控制器发展的多样化体现在3个方面:产品类型、编程语言和应用领域。
(5)模块化
PLC的扩展模块发展迅速。功能明确化、专用化的复杂功能由专门模块来完成。主机仅仅通过通讯设备向模块发布命令和测试状态,这使得PLC的系统功能进一步增强,控制系统设计进一步简化。
(6)网络与通讯能力增强
计算机与PLC之间以及各个PLC之间的联网和通讯的能力不断增强,使用工业网络可以有效地节省资源、降低成本、提高系统可靠性和灵活性,致使网络的应用有普遍化的趋势。
(7)多样化与标准化
生产PLC产品的各厂家都在大力度地开发自己的新产品,以求占据市场的更大份额。因此产品向多样化方向发展,出现了欧、美、日多种流派。与此同时,为了推动技术标准化的进程。一些国际性组织,如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准,如对各种类型的产品作一定的归纳或定义,或对PLC未来的发展制定一种方向或框架。
(8)工业软件发展迅速
与可编程序控制器硬件技术的发展相适应,工业软件的发展非常迅速,它使系统应用更加简单易行,大大方便了PLC系统的开发人员和操作使用人员。
可编程序控制器的输出信号类型可以是开关量、模拟量和数字量。输出单元从广义上分包含两部分:一是与被控设备相连接的接口电路,另一部分是输出的映像寄存器。
PLC运行时CPU从输入映像寄存器读取输入信息并进行处理,将处理结果放到输出映像寄存器。输出映像寄存器由输出点相对应的触发器组成,输出接口电路将其由弱电控制信号转换成现场需要的强电信号输出,以驱动电磁阀、接触器、指示灯等被控设备的执行元件。
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Advantech PCA-6753F Rev.A2 Industrial motherboard
LENZE ESV751N06TXC AC TECH ESV751N06TXC
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VICOR VI-PU22-CWW FLATPAC P.S VI-PU22-CWW
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KAWASKI PSUB1-11 Power Supply PSUB1-11
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FANUC A20B-8100-0670/05B ETHERNET BOARD A20B8100067005B
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IAI CORPORATION RCA-S-SA6-EU RC Controller EU RCASSA6EU
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SIEMENS 6ES7 326-1RF00-0AB0 INPUT MODULE 6ES7326-1RF00-0AB0 SHIP
Keyence CV-751P 5123580 Touch Screen Panel
FANUC A16B-1210-0300/02A CIRCUIT BOARD A16B12100300
FANUC A20B-2000-0170/04B CIRCUIT BOARD A20B2000017004B
CHROMALOX 2110-R3000 MODULE 2110R3000
Siemens 6FC5101-0AB01-0AA0 Module Rack Empty OPTION
KUKA E93DA22214B531 SERVO DRIVE
FANUC A16B-1010-0041/05A PC BOARD A16B-1010-0041
HONEYWELL UDC2000 DC200C-2-000-100000-0 CONTROLLER
MITSUBISHI FX3UC-16MT, FX2NC-16EX, FX2NC-CNV-IF, FX2N-2DA SYSTEM
MODICON PC-CBCA-000 CONTROLLER PCCBCA000
Burster 9310-V0001 Display DIGIFORCE 9310V0001
OMEGA CCT-20-0/300C MODULE CCT200300C
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Siemens 6ES7315-2EG10-0AB0 SIMATIC 6ES7 315-2EG10-0AB0
INMOTION 3HAB8101-1/06A DSQC345A MP
MITSUBISHI GT1675M-STBA OPERATOR INTERFACE GT1675MSTBA
FANUC A16B-3200-0110/08D CIRCUIT BOARD A16B3200011008D
Yaskawa JEPMC-AN210 Analog Output MP920 AO-01 JEPMCAN210
Panasonic AFP7CPS31E FP7 Module CPS31E
Siemens 6SC6110-0PA00 Optional Hand Spindle 6SC61100PA00
ADVANTECH SYM53C895 PC BOARD PCA-6178
FANUC A06B-6124-H205 SERVO AMPLIFIER A06B-6124-H205
ADVANCED MOTION CONTROLS S30A40ACC AMPLIFIER S30A40ACC
INDRAMAT DDS 2.1-A150-D SERVO CONTROLLER
YASKAWA SGDB-03VDY1 SERVO DRIVE SGDB-03VDY1
FANUC A20B-2200-001 PCB BOARD A20B-2200-001
ABB ACS143-1K1-1-U SERVO DRIVE
MITSUBISHI MR-J2-100CT SERVO DRIVE MRJ2100CT
SIEMENS 6SN1118-1NH01-0AA1 SERVODRIVE 6SN1118-1NH01-0AA1
FANUC A02B-0072-B501 CIRCUIT BOARD A02B0072B501
YOKOGAWA EB401 SUFFIX -10 STYLE S1
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BAILEY INIIT03 INFI-NET TO INFI-NET TRANSFER MODULE
AMKASYN AMK AN-20F-1-1 POWER SUPPLY AN20F
AMKASYN AMK AW-25/38-3 SERVO DRIVE 45624-0108-761902
ALLEN BRADLEY 22F-D4P2N113 AC DRIVE 22F-D4P2N113
FANUC 16B-2203-0033/02B WITH PC CARDS 16B-2203-0033
FANUC A16B-2202-0985/04B CONTROL BOARD A16B-2202-0985/04B
REXROTH ES-43-A8-0609-C-3A CIRCUIT BOARD ES43A80609C3A
MITSUBISHI FR-BR-15K RESISTOR IT TYPE BKO-CA1072H31
Fanuc A05B-2115-C001 Teach Pendant it A05B-2115-C001
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OMRON SYSDRIVE 3G3JVA4037A INVERTER 3G3JV-A4037-A
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SIEMENS 6AV6647-0AK11-3AX0 SIMATIC 6AV6 647-0AK11-3AX0
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HELMHOLZ 700-321-1BL00 , 7003211BL00
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IOP MD03R-02-0045 OPERATOR INTERFACE MD03R020045
SIEMENS FRONT FACE LM-CH53-22NTK FOR 6ES7646-0BC20-0AA0
MITSUBISHI FR-U120-0.1K-UL INVERTER FRU1200.1KUL
HUBBELL BH-30 Tool Balancer,48.0-66.0 lb. Capacity
COOPER POWER TOOLS CPS3 NO:961112 SERVO DRIVE CPS3
FANUC IC697CMM742-HK ETHERNET INTERFACE MODULE IC697CMM742-HK
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FANUC A06B-6096-H104 SERVO AMPLIFIER A06B6096H104
HURCO MAX-400LPS PWOER SUPPLY MAX400LPS
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