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。
REPAIRED THERMO ENVIRONMENTAL 48-7 PC BOARD 487
REPAIRED THERMO ENVIRONMENTAL ASY. P/N 9273 PC BOARD P/N 9288
REPAIRED TRI-SEN SYSTEMS 86-4388 CIRCUIT BOARD 83-959 864388
REPAIRED VALVCON SUNRISE LAB SL1147 CONTROL BOARD
REPAIRED VALVCON SUNRISE LAB SL1147 CONTROL BOARD
REPAIRED VTI 90005654/5655 PC BOARD 90005654
REPAIRED VTI 90005654/5655 PC BOARD 90005654
REPAIRED VTI 90005654/5655 PC BOARD 90005654
REPAIRED VTI 90005654/5655 PC BOARD 90005654
REPAIRED WARNER & SWASEY 8940-772E SERVO PREAMP BOARD 8940772E
REPAIRED WESTINGHOUSE 1326A15G01 GPG CARD
REPAIRED WESTINGHOUSE 1326A15G01 GPG CARD
REPAIRED WESTINGHOUSE 204P447H01F CIRCUIT BOARD
REPAIRED WESTINGHOUSE 204P447H01F CIRCUIT BOARD
REPAIRED WESTINGHOUSE 204P447H01F CIRCUIT BOARD
REPAIRED WESTINGHOUSE 204P447H01F CIRCUIT BOARD
REPAIRED WESTINGHOUSE 3111508-2-B PC BOARD HAGAN ASSY. 398554 31115082B
REPAIRED WESTINGHOUSE 398545 PC BOARD 398542-002
REPAIRED WESTINGHOUSE 398545 PC BOARD 398542-002
REPAIRED WESTINGHOUSE 398545 PC BOARD 398542-002
REPAIRED WESTINGHOUSE 398545 PC BOARD 398542-002
REPAIRED WESTINGHOUSE 399183-001 PC BOARD 399183001
REPAIRED YLI INDUSTRIES DDIO87-4 I/O BOARD DDIO874
REPARIED HONEYWELL 220600 CONTROL CARD
REPARIED HONEYWELL 220600 CONTROL CARD
REXA D95574 CONTROL BOARD S95814 S96548 S96425
REXA D95574 CONTROL BOARD S95814 S96548 S96425
REXA D96709 REV. 2 BOARD
REXA D96709 REV. 2 BOARD
REXA S95814 CONTROL BOARD D95574 S96425 S96548
REXA S95814 CONTROL BOARD D95574 S96425 S96548
REXA S95814 CONTROL BOARD D95574 S96425 S96548
REXA S95814 CONTROL BOARD D95574 S96425 S96548
REXA S95814 CONTROL BOARD D95574 S96425 S96548
REXA S95814 CONTROL BOARD D95574 S96425 S96548
REXNORD 656-10073-80 TRANSDUCER BOARD 6561007380
REXNORD 656-10073-80 TRANSDUCER BOARD 6561007380
REXNORD 656-10073-80 TRANSDUCER BOARD 6561007380
REXNORD 656-10073-80 TRANSDUCER BOARD 6561007380
REXNORD 656-10075-80 PC BOARD 6561007580
REXNORD 656-10075-80 PC BOARD 6561007580
REXNORD 656-10075-80 PC BOARD 6561007580
REXNORD 656-10075-80 PC BOARD 6561007580
REXROTH 3723532220 DIRECTIONAL CONTROL 24VDC
REXROTH 3723532220 DIRECTIONAL CONTROL 24VDC
REXROTH 3723532220 DIRECTIONAL CONTROL 24VDC
REXROTH 3723532220 DIRECTIONAL CONTROL 24VDC
REXROTH HCSO1.1E-W0008-A-03-A-CC-EC-PB-L3-NN-FW SERVO DRIVE R911338262
REXROTH HDC01.1-A100N-PB01-0 SERVO DRIVE R911292314 R911292263
REXROTH HDS03.2-W075N-HS12-01-FW SERVO DRIVE R911190008 R911275971
REXROTH PV24F/10 AMPLIFIER BOARD 890004 L5398 PV24F10
REXROTH QLC-1 PC BOARD ES-43-A8-0819 QLC1
REXROTH QLC-1 PC BOARD ES-43-A8-0819 QLC1
REXROTH QLC-1 PC BOARD ES-43-A8-0819 QLC1
REXROTH QLC-1 PC BOARD ES-43-A8-0819 QLC1
REXROTH VSPA1-2-10/V0/0 Amplifier Card / Module
REXROTH VSPA1-2-10/V0/0 Amplifier Card / Module
REXROTH VSPA2 AMPLIFIER CARD VT-VSPA2-1-20/VO/T5 [1]
REXROTH VSPA2-1 AMPLIFIER CARD VT-VSPA2-1-20/VO/T5
REXROTH VT 11131-12 ANALOG AMPLIFIER MODULES R900537344
REXROTH VT2000 AMPLIFIER CARD VT2000S/K-30
REXROTH VT2000 AMPLIFIER CARD VT2000S/K-30
REXROTH VT2000 AMPLIFIER CARD VT2000S/K-30 [2]
REXROTH VT2000 AMPLIFIER CARD VT2000S/K-30 [2]
REXROTH VT2000S48/2 AMPLIFIER CARD VT2000S482 VT2000 CH-32C-11
REXROTH VT-2010S42 AMPLIFIER BOARD VT2010S42 REPAIRED
REXROTH VT2010-S47/2 AMPLIFIER BOARD VT2010S472
REXROTH VT2010-S47/2 AMPLIFIER BOARD VT2010S472
REXROTH VT2010-S47/2 AMPLIFIER BOARD VT2010S472
REXROTH VT2010-S47/2 AMPLIFIER BOARD VT2010S472
REXROTH VT2013 AMPLIFIER CARD VT2013 S15/2
REXROTH VT2013 AMPLIFIER CARD VT2013 S15/2
REXROTH VT2013 AMPLIFIER CARD VT2013 S15/2 [1]
REXROTH VT2013 AMPLIFIER CARD VT2013 S15/2 [1]
REXROTH VT2013 AMPLIFIER CARD VT2013 S15/2 [2]
REXROTH VT2013 AMPLIFIER CARD VT2013 S15/2 [2]
REXROTH VT3002-1-20/32F CARD HOLDER VT300212032F
REXROTH VT3002-1-20/32F CARD HOLDER VT300212032F
REXROTH VT3002-1-20/32F CARD HOLDER VT300212032F
REXROTH VT3002-1-20/32F CARD HOLDER VT300212032F
REXROTH VT3006S35R5 ANALOG AMPLIFIER CARD
REXROTH VT3006S35R5 ANALOG AMPLIFIER CARD
REXROTH VT-5001S20-R5 AMPLIFIER CARD 108/1283, VT5001S20R5 REPAIRED
REXROTH VT500-3S31-R1 AMPLIFIER CARD VT5003S31R1
REXROTH VT500-3S31-R1 AMPLIFIER CARD VT5003S31R1
REXROTH VT-5003-S-31-R5 AMPLIFIER CARD VT5003S31R5
REXROTH VT500-3S40-R1 AMPLIFIER CARD VT5003S40R1
REXROTH VT500-3S40-R1 AMPLIFIER CARD VT5003S40R1
REXROTH VT5004-24/R5E AMPLIFIER BOARD VT500424R5E
REXROTH VT5004-24/R5E AMPLIFIER BOARD VT500424R5E
REXROTH VT-5004S20-R5 AMPLIFIER CARD 1252/1283, VT5004S20R5 REPAIRED
REXROTH VT-5004S20-R5 AMPLIFIER CARD 1254/1283, VT5004S20R5
REXROTH VT5007-17B PC BOARD VT500717B
REXROTH VT5007-17B PC BOARD VT500717B
REXROTH VT5007-17B PC BOARD VT500717B
REXROTH VT5007-17B PC BOARD VT500717B
REXROTH VT-5008-S12-R1 AMPLIFIER CARD VT5008S12R1
REXROTH VT-5008-S12-R1 AMPLIFIER CARD VT5008S12R1
REXROTH VT-5011-S31-R1 AMPLIFIER CARD VT5011S31R1
REXROTH VT-5011-S31-R1 AMPLIFIER CARD VT5011S31R1
REXROTH VT5011-S44-R1 AMPLIFIER CARD VT5011S44R1
REXROTH VT5011-S44-R1 AMPLIFIER CARD VT5011S44R1
REXROTH VTS0104 BOARD VTS-0104
REXROTH VTS0104 BOARD VTS-0104
RHEINTACHO 5333.001 SPEED RELAY MOTION MONITOR 24VDC IP20