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。
VINGTOR MARINE AS PCB PANEL VP-1050 / FAST SHIP DHL OR FEDEX
VINGTOR MARINE PCB VP-1104 / FAST SHIP DHL OR FEDEX
VINGTOR MARINE VA-115 PCB CARD VP-0305 1020604200
VINGTOR MARINE VA-115 PCB CARD VP-0305 1020604200
VINGTOR MARINE VA-502 PCB CARD
VINGTOR MARINE VA-502 PCB CARD
VINGTOR MARINE VA-503.0.0 PCB CARD
VINGTOR MARINE VA-503.0.0 PCB CARD
VINGTOR MARINE VA-503.0.0 PCB CARD
VINGTOR MARINE VA-503.0.0 PCB CARD
VINGTOR MARINE VA-503.0.0 PCB CARD
VINGTOR MARINE VA-503.0.0 PCB CARD
VINGTOR MARINE VMP-530 MAIN STATION WITH PCB VP-1050
VINGTOR MARINE VP-1008 PCB CARD
VINGTOR MARINE VP-1008 PCB CARD
VINGTOR MARINE VP-1700 PCB CARD
VINGTOR MARINE VP-1700 PCB CARD
VINGTOR MARINE VP-1700 PCB CARD
VINGTOR MARINE VP-1700 PCB CARD
VINGTOR PCB CARD VP 1040 / FAST SHIP DHL OR FEDEX
VINGTOR PCB CARD VP 1040 / FAST SHIP DHL OR FEDEX
VINGTOR PCB CARD VP-1027 / FAST SHIP DHL OR FEDEX
VINGTOR PCB CARD VP-1027 / FAST SHIP DHL OR FEDEX
VINGTOR VP-1024 PCB
VINGTOR VP-1024 PCB
VINGTOR VP-1027 PCB CARD
VINGTOR VP-1027 PCB CARD
VINGTOR VP-1027 PCB CARD
VINGTOR VP-1027 PCB CARD
VINGTOR VP-1027 PCB CARD
VINGTOR VP-1027 PCB CARD
VINGTOR VP-1106 PCB CARD
VINGTOR VP-1106 PCB CARD
VINGTOR VP-1305 PCB CARD
VINGTOR VP-1305 PCB CARD
V-I-O 1361-11310 CIRCUIT BOARD 136111310
V-I-O 1361-11310 CIRCUIT BOARD 136111310
VISI TRAK MVO-06596 CIRCUIT BOARD MVO06596
VISI TRAK MVO-06596 CIRCUIT BOARD MVO06596
VISI TRAK MVO-06596 CIRCUIT BOARD MVO06596
VISI TRAK MVO-06596 CIRCUIT BOARD MVO06596
VL PCB-VU2153_1-03 DISPLAY PCB CARD VLU K2153-02
VL PCB-VU2153_1-03 DISPLAY PCB CARD VLU K2153-02
VL PCB-VU2153_1-03 DISPLAY PCB CARD VLU K2153-02
VL PCB-VU2153_1-03 DISPLAY PCB CARD VLU K2153-02
VL PCB-VU2153_1-03 DISPLAY PCB CARD VLU K2153-02
VL PCB-VU2153_1-03 DISPLAY PCB CARD VLU K2153-02
VMIC VMIVME7589 PROCESSOR BOARD
VMIC VMIVME7589 PROCESSOR BOARD
VN 115/87 OIL MIST DETECTOR PCB BOARD 300 553/00
VN 115/87 OIL MIST DETECTOR PCB BOARD 300 553/00
VN 115/87 OIL MIST DETECTOR PCB BOARD 300 553/00
VN 115/87 OIL MIST DETECTOR PCB BOARD 300 553/00
VN 115/87 OIL MIST DETECTOR PCB BOARD 300 553/00
VN 115/87 OIL MIST DETECTOR PCB BOARD 300 553/00
VN 115/87 OIL MIST DETECTOR PCB BOARD 300 553/00
VN 115/87 OIL MIST DETECTOR PCB BOARD 300 553/00
VODAVI LDK-300 PSU POWER SUPPLY UNIT
VODAVI LDK-300 PSU POWER SUPPLY UNIT
VODAVI LDK-300 PSU POWER SUPPLY UNIT
VODAVI LDK-300 PSU POWER SUPPLY UNIT
VODAVI LDK-300 SLIB2E ANALOG EXTENSION PCB CARD MSGU48 ISS.3
VODAVI S30238-K9042-X12,24-3-X501 DTIB 12/24 OF GDK-100 PCB BOARD REV.A
VODAVI S30238-K9046-X-1-X501 LCOB(ST) OF GDK-100 PCB BOARD REV.A
VOLVO PENTA 881616 SPEED CONTROL UNIT
VOLVO PENTA 881616 SPEED CONTROL UNIT
VOLVO PENTA 881616 SPEED CONTROL UNIT
VOLVO PENTA 881616 SPEED CONTROL UNIT
VZTECH PCI 2-PORT SERIAL VZ-PS1701 / FAST SHIP DHL OR FEDEX
WAGO 16AO-AAI543 INTERFACE MODULE 51023974
WAGO 16AO-AAI543 INTERFACE MODULE 51023974
WAGO 750-342 ETHERNET FIELDBUS COUPLER MODULE 24V DC
WAGO PCB CARD
WAGO PCB CARD
WALCO 132-034-33 REGULATOR CARD REV.6/76 13203433
WALCO 132-034-33 REGULATOR CARD REV.6/76 13203433
WALCO 132-034-33 REGULATOR CARD REV.6/76 13203433
WALCO 132-034-33 REGULATOR CARD REV.6/76 13203433
WALCO 132-035 CIRCUIT BOARD 132035
WALCO 132-035 CIRCUIT BOARD 132035
WARNER & SWASEY 8100-0193B PC BOARD 81000193B
WARNER & SWASEY 8100-0193B PC BOARD 81000193B
WARNER & SWASEY 8940-358A PC BOARD 8940358A
WARNER & SWASEY 8940-358A PC BOARD 8940358A
WARNER & SWASEY 8940-5174 PC BOARD 89405174
WARNER & SWASEY 8940-5174 PC BOARD 89405174
WARNER & SWASEY 8940-5177 PC BOARD 89405177
WARNER & SWASEY 8940-5177 PC BOARD 89405177
WARNER & SWASEY 8940-5177 PC BOARD 89405177
WARNER & SWASEY 8940-5177 PC BOARD 89405177
WARNER & SWASEY 8940-5181-2 PC BOARD 89405181 894051812
WARNER & SWASEY 8940-5183-5 PC BOARD 894051835
WARNER & SWASEY 8940-5186-4 PC BOARD 894051864
WARNER & SWASEY 8940-5448 INPUT BOARD 89405448 REPAIRED
WARNER & SWASEY 8940-546G 5940-6760G SPINDLE CONTROL BOARD
WARNER & SWASEY 8940-6273A PC BOARD 89406273A
WARNER & SWASEY 8940-6273A PC BOARD 89406273A
WARNER & SWASEY 8940-6756B CIRCUIT BOARD
WARNER & SWASEY 8940-6756B CIRCUIT BOARD
WARNER & SWASEY 8940-772C PREAMP BOARD 8940-6672 REPAIRED
WARNER & SWASEY 8940772C SERVO PREAMP BOARD 8940-67648 REPAIRED
WARNER & SWASEY 8940-856 SERVO PREAMP BOARD 8940856
WARNER ELECTRIC 701-9250C TIMER BOARD 7019250C
WARNER ELECTRIC 701-9250C TIMER BOARD 7019250C
WARNER ELECTRIC 701-9664 PC BOARD 7019664
WARNER ELECTRIC 701-9664 PC BOARD 7019664
WARNER ELECTRIC MCS 830-1 7400-448-026 RELAY SWITCH BOARD 7400448026 MCS8301