A-B 1756-L55M13

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描述

A-B 1756-L55M13

PLC程序的内容

    PLC应用程序应最大限度地满足被控对象的控制要求,在构思程序主体的框架后,要以它为主线,逐一编写实现各控制功能或各子任务的程序。经过不断他调整和完善。使程序能完成所要求的控制功能。另外,PLC应用程序通常还应包括以下几个方面的内容:
    (1)初始化程序在PLC上电后,一般都要做一些初始化的操作。其作用是为启动作必要的准备,并避免系统发生误动作。初始化程序的主要内容为:将某些数据区、计数器进行清零;使某些数据区恢复所需数据;对某些输出量置位或复位;显示某些初始状态等等。
    (2)检测、故障诊断、显示程序应用程序一般都设有检测、故障诊断和显示程序等内容。这些内容可以在程序设计基本完成时再进行添加。它们也可以是相对独立的程序段。
    (3)保护、连锁程序各种应用程序中,保护和连锁是不可缺少的部分。它可以杜绝由于非法操作而引起的控制逻辑混乱,保证系统的运行更安全、可靠。因此要认真考虑保护和连锁的问题。通常在PLC外部也要设置连锁和保护措施。
    2.PLC程序的质量
    对同一个控制要求,即使选用同一个机型的PLC,用不同设计方法所编写的程序,其结构也可能不同。尽管几种程序都可以实现同一控制功能,但是程序的质量却可能差别很大。程序的质量可以由以下几个方面来衡量:
    (1)程序的正确性应用程序的好坏,最根本的一条就是正确。所谓正确的程序必须能经得起系统运行实践的考验,离开这一条对程序所做的评价都是没有意义的。
    (2)程序的可靠性好好的应用程序可以保证系统在正常和非正常(短时掉电再复电、
    某些被控量超标、某个环节有故障等)工作条件下都能安全可靠地运行,也能保证在出现非法操作(如按动或误触动了不该动作的按钮)等情况下不至于出现系统控制失误。
    (3)参数的易调整性好PLC控制的优越性之一就是灵活性好,容易通过修改程序或参数而改变系统的某些功能。例如,有的系统在一定情况下需要变动某些控制量的参数(如定时器或计数器的设定值等),在设计程序时必须考虑怎样编写才能易于修改。
    (4)程序要简练编写的程序应尽可能简练,减少程序的语句,一般可以减少程序扫描时间,提高PLC对输入信号的响应速度。当然,如果过多地使用那些执行时间较长的指令,有时虽然程序的语句较少,但是其执行时间也不一定短。
    (5)程序的可读性好程序不仅仅给设计者自己看,系统的维护人员也要读。另外,为了有利于交流,也要求程序有一定的可读性。

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COMPAQ DGBGA-AA GIGASWITCH ETHERNET*NEW*

COMPAQ PBXGD-BA COMPAQ VIDEO CARD

COMPAQ 3X-KN8AA-AA DEC GS160/320 CPU MODULE

COMPAQ DS-KGPSA-AB PCI TO FIBRE HBA, COPPER GLM

COMPAQ NAS-S1000-566 NAS S1000 MOTHERBOARD W/566MHZ

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DEC 54-24970-01 FIBER OPTICS MODULE

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DEC 54-30430-01 HSV110 MODULE

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DEC M7533-AB DEQRA MODULE

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DEC MS7CC-EQ 1 GIGABYTE MEMORY MODULE

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FORE ACCA2001-0011 FORE ETHERNET ATM I/F 155 UTP

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IBM 09L1655 4-PORT SSA W/SIMM 18MM PCI CAR

IBM 09L1645 4-PORT SSA W/SIMM 18MM PCI CAR

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IBM 11J6220 THINKPAD 380E LAPTOP FOR S/390

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IBM 41L5103 IBM 7025 I/O PLANAR MODULE

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MISC DCP4856-22R/D SNMP DIRECT ACCESS T-1 CSU/DSU

NORTEL NTBP16FB-01 NORTEL PASSPORT V.35 FP MODULE

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DEC 54-11294-00 11/70 CONSOLE MODULE W/O BEZEL

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HP A6873A INTEGRITY RX2600 SERVER BASE ITANIUM2 1.0GHZ

HP AD542B StorageWorks M5314 FC Drive Enclosure for Eva

ADIC FASTSTOR 22 98-2200-01 DLT8000 LVD/SE AUTOLOADER

COMPAQ 154872-001 CPQ DLT8000 40/80GB EXTERNAL

DEC 54-19369-02 DEFEB-LA FI MODULE DUAL

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DEC 70-40064-01 STARLIGHT LVD EMU

DEC 70-33259-02 HSG80 CONTROLLER MODULE.REVD01

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DEC SWXRC-05 HSZ40 CONTROLLER

DEC VSXXA-KA POS KEYBOARD

DELL 1H734 DELL PE1400 SC SYSTEM BOARD

DELL A50291-651 DELL P7150 SYSTEM BD W/CARRIER

FORE ACCA2040 FORE NMM BOARD

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IBM 05H7772 IBM 3494 BAR-CODE READER ASSY

IBM 07L8859 IBM 7025 SYSTEM PLANAR BOARD

IBM 04N7140 IBM M820 SYSTEM PROCESSOR ASY

IBM 08L8106 IBM 48V 14.2A POWER SUPPLY

IBM 32H3975 NETFINITY 5600 4-PORT SSA ADAP

IBM 44H2782 IBM S390 I/O CONTROLER ASSY

IBM 47H0289 IBM S390 I/O CONTROLER ASSY

IBM 91H3906 IBM 940X DISK/BACKP/CAGE ASSY

IBM 91H3905 IBM 940X DISK/BACKP/CAGE ASSY

INFINEON HYS72D128320GBR 1GB DDR 266MHZ ECC SDRAM MEMOR

MISC 6210515-01 TL810 X-AXIS CONFIRMATION SENS

MISC 6210440-01 TL810 CONTROL PANEL ASSEMBLY

MISC 6A1206P01 LN28 CONTROLLER

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MTI QTS30 MTI Q-BUS SCSI CONTROLLER

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DEC L0111-YA MODULE

DEC M3114 MODULE

DEC M7895-YA 48 CHANNEL INPUT DSS11

DEC MS220-BA 64 MB MEMORY MODULE

DEC T1030-AC KA800 MODULE

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IBM 11H8275 IBM 7015-XXX POWER SUPPLY AC

LEXMARK 44H0005 LEXMARK MARKNET ETHERNET*NEW*

HP 283802-001 / DS-DSGGE-BU 16 PORT 2GB 2/64 CORE BOARD

DEC 54-23153 VAX3000-600 CPU

DEC FE-DIS09-KA SNMP DIRECT ACCESS T-1 CSU/DSU NEW

DEC M7084 DBH-11 PDP 11/84 DBH-11 CONTROL MODULE

HP 189715-003 OPENVIEW STORAGE MANAGEMENT APPLIANCE III

HP AH094A AH094AX PCIE 2-PORT 4GB FIBRE CHANNEL HBA

201723-B21 COMPAQ MSA1000 ARRAY CONTROLLER ENCLOSURE

HP AA941A ESL 351144-001 200/400GB U460 FC TAPE DRIVE

HP AA977A /361195-001 STORADGEWORKS SAN SWITCH 2/16

COMPAQ 147090-001 2 PORT SERVER CONSOLE SWITCH RACK OPT

COMPAQ 158413-001 HSJ80 CONTROLLER MODULE

COMPAQ 349201-001 HP DL380-G3 (1)2.8GHZ CPU/1GB MEMORY

CRAY FPX4802-02S CRAY FRAME RELAY ENCRYPTOR

CRAY FPX4802/DES CRAY FRAME RELAY ENCRYPTOR

CRAY 905-5241-XXX CRAY FRAME RELAY ENCRYPTOR

CRAY 905-5241-004 CRAY FRAME RELAY ENCRYPTOR

DEC 12-42827-01 ALPHASERVER 8200 BLOWER ASSY

DEC 3X-DGSRK-AB QUAD PORT SERIAL MODULE

DEC 54-22463-03 DEFZA-CA BOARD

DEC 54-23461-01 AS8200 SERIAL DATA PORT

DEC 54-22605-01 BREAKOUT MODULE

DEC 54-15020-01 BACKPLANE

DEC 54-23302-19 CONTROL PANEL BLUE BUTTON

DEC 54-22509-01 DGLTA-FA

DEC 54-24413-01 DWP64 PCI MODULE

DEC 54-24729-01 SECONDARY BREAKOUT

DEC 54-24756-03 DEC DS20E MOTHERBOARD

DEC 54-22907-02 DEC HSD30 DSSI SCSI CONTROLLER

DEC 54-24889-01 CONTROLLER MODULE

DEC 54-24725-01 ALPHA XLT300 MLB

DEC 54-22092-03 486 CPU MODULE

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DEC 54-30358-01 DS20 MODULE

DEC 54-24034-05 DUAL PROCESSOR CARD

DEC 54-30158-06 ES40 500MHZ CPU MODULE

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DEC 54-25088-03 XP1000 CPU MODULE

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DEC 70-33523-01 DS-SWXRA-GH CONTROLLER SHELF

DEC 70-32195-03 SWXRC-05 CONTROLLER MODULE

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DEC 70-40057-S1 HSJ80 CONTROLLER MODULE

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DEC 748-0135-F4 FIBRE OPTICAL CONTROLLER MODUL

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DEC DEBET-RQ LANBRIDGE 150 FIBER 240V

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DEC DEFCN-AC DECCONCENTRATOR 500 W/OBM

DEC DEFEB-AC DEC BRIDGE 510

DEC BA356-LE BLUE MODULAR EXPANSION

DEC H7202-KB DEC PDP11/84 POWER SUPPLY

DEC DEPCM WIDGET

DEC DS-TL890-NE DLT EXPANSION UNIT(RACK MOUNT)

DEC DEFCN-CA OPTICAL BOARD

DEC H777 PDP 11 POWER SUPPLY

DEC DSRZE-AA MUXSERVER 320 W/COVERS

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DEC M7199-AH MODULE

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DEC MS7CC-FT 2 GB MEMORY MODULE ALPHASERVER

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DEC MS7CC-FH 2 GB MEMORY MODULE ALPHASERVER

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DEC PMAGD-CA GRAPHICS MODULE

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FORCE 106093 FORCE PMC-VGA MODULE

EMC 005041086 CLARIION BBU

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IBM 08J5803 IBM 2003 DC CONVERTER

IBM 09L1650 IBM 4-P MODULE W/4MB CACHE MOD

IBM 44H2744 IBM AC/DC BULK PWR REGULATOR

IBM 44H2743 IBM BPR-5M AC/DC BULK POWER RE

IBM 51H9023 IBM DCA-MM DC/DC CONVERTER

IBM 60H0440 IBM QJ26 9672CARD

IBM 59H4120 IBM 20/40GB 8MM INT TAPE DRIVE

IBM 59H4119 IBM 20/40GB 8MM INT TAPE DRIVE

IBM 93H6187 IBM 7015-XXX POWER SUPPLY AC

IBM 38L1186 INFOPRINT 40 CNTROLLER BOARD

IBM 46H8932 IBM QD92 9672CARD

IBM 60H0570 IBM QL66 9672CARD

IBM 74G9771 IBM 9402 AS400 BACKPLANE W CAG

IBM 97H6491 IBM 7017 4-WAY PROCESSOR UNIT

MADGE 157-159-02 SMART RINGSWITCH, 112 SWITCH

MISC 92-00460-XX AURORA MULTIPORT

MISC 92-00400-XX AURORA MULTIPORT MODEL 3200SE

MISC 2T-QCS02-AA 2-PORT SERVER CONSOLE

MISC 6210925-01 TL81X MAGAZZINE

MISC 905-5242-022 MULTI-RATE CSU/DSU *NEW*

MISC 6210911-01 TL81X MAGAZZINE

MISC 45040433 MDB SYS. MLSI-DR11-W PLUS

NATIONAL INSTRUMENTS 179055-01 NATIONAL INST. MODULE

NORTEL 113724 ADVANCED REMOTE NODE

PRINTRONIX 144712-001 PRINTRONIX P6080 POWER SUPPLY

OVERLAND 106025-001 TKZ63 RACK MOUNT KIT*NEW*

NATIONAL INSTRUMENTS 179056-01 NATIONAL INSTRUM. GPIB M

QUANTUM TH6XA-EE DLT7000 35/70GB LIB/LOADER

QUANTUM DLT7000 35/70GB INTERNAL DLT

QMS/MINOLTA 1710122-001 OPC BELT CARTRIDGE

QUALSTAR 500983-01-0 QUALSTAR 4440 8MM BARCODE READ

SUN 370-2435-02 SUN, DIFF. SCSI ARRAY CONTROL

QUALSTAR 500826-03-7 QUALSTAR 4440 TAPE DRIVE PWS

SUN 370-2435 SUN, DIFF. SCSI ARRAY CONTROL

QMS 2293040 QMS PS-2000 CONTROL BOARD

COMPAQ 154851-001 ESL9326D GRAPHICAL DISPLAY

HEWLETT PACKARD C2473S 670MB SCSI/SE HARD DRIVE

QUANTUM 6310827-01 ESL9326D GRAPHICAL DISPLAY

293360-B21/3059​83-001 HP SR2122 ISCSI STORAGE ROUTER

HP A6873B RX2600 DUAL ITANIUM2 1.5GHZ BASE SYTEM

3X-KN8AC-AA B4168-AA HP GS80/160/320 1.2GHZ CPU MODULE

SUN 375-3203 SUNPCI IIIPRO 1.6GHZ,1GB RAM,USB/FIREWIR​E

COMPAQ 169017-001 20/40GB DAT DDS4 EXT. AUTOLOADER *NEW

L1000 SUN STOREDGE L1000 DLT7000 TAPE LIBRARY

HP 201723-B22 HP MSA1000 ENCLOSURE W/CONTROLER -256MB
REPLACEMENT 229198-001

HP A6218A VA7410 CONTROLLER ARRAY WITH 1GB OF MEMORY

DEC 54-22116-02 CBS,36 PORT MODULE

DATARAM 40903 DATARAM MEMORY MODULE

DEC 54-19445-01 MODULE

DEC 54-24277-01 EXPANSION MODULE

DEC 54-23979-01 BACKPLANE

DEC 54-24741-01 DEC MODULE

DEC 70-31767-01 AS1000 R/M OCP TRAY ASSY

DEC 70-30119-01 SW810-AA FAN UNIT(6)

DEC DEFTA-DA DEC TURBO CHANNEL FDDI

DEC DSTY1-AA OPTION MODULE SET

DEC M7564-01 KDJ11-D/A PDP11-53 CPU

DEC MS332-FA DEC 1GB MEMORY KIT- 50NS

DEC P2000-BA MEMORY OPTION

DEC SN-PBXIP-AB PCI/BRI U ISDN ADAPTER

DEC SGS-17C SAMSUNG X TERMINAL UNIT

HEWLETT PACKARD 118-27276-02 HP SYS PROCESSOR BOARD MOU

HEWLETT PACKARD 5081-2764 BACKPLANE BOARD

HEWLETT PACKARD C1553-00100 HP48GB INT. DAT AUTOLOAD TA

HEWLETT PACKARD J4095A HP PROCURVE SWITCH 2224

IBM 52G1343 IBM RS6000 GRAPHICS MEM. CARD

LUCENT X330S2 LUCENT CAJUN P33X 1000BSX 2PT

MISC 221132-B21 ULTRA3 POWER SUPPLY

PRINTRONIX 134294-001 LG12 TOP COVER ASSY

HP 3X-MS8AA-BB 1GB INFINEON MEMORY KIT FOR GS80/160/320

HP STORAGEWORKS A7566A SFS 20 SATA STORAGE ENCLOSURE

HP A6870B Integrity rx2600-2 1.3ghz Server base system

12-47545-01 GS160/GS320 BLOWER 48V /EBM G3G480-AA02-05

COMPAQ 123476-003 HP 4414 14 BAY ENCLOSURE

COMPAQ 159505-001 DL590/64 VOLTAGE REGULATOR BD

COMPAQ 164002-001 COMPAQ MOTHER BOARD

COMPAQ 176249-001 FC ARBITRATED LOOP W/8 GBCIS

COMPAQ 178681-001 24-PORT DIGITAL MODEM

COMPAQ 166454-B21 SMART UPLINK MODULE 10/100TX

COMPAQ 166450-B21 SMART UPLINK MODULE 10/100TX

COMPAQ 296064-001 MOTOR BLOW W/FAN

COMPAQ 194701-001 FC ARBITRATED LOOP W/8 GBCIS

COMPAQ 340837-001 TL8XX X-AXIS INTERCONNECT PWA

COMPAQ 424871-001 COMPAQ SERVER NETII CARD

COMPAQ DS-BA356-SE 7 DEVICE 16BIT SBB SHELF

COMPAQ 340834-001 DLT7000 35/70GB S-DIFF L.READY

COMPAQ 422869-002 COMPAQ SERVER NETII CARD

COMPAQ NAS S1000/384MB NAS S1000 384MB MEMORY KIT

COMPAQ 402230-001 DLT7000 35/70GB TAPE DRIVE W/HOUSING

COMTROL 95900-7 COMTROL ROCKETPORT 32 PCI SERIAL ADAPTE

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选择深圳长欣,选择放心,售后无忧大量现货,当天顺丰发货!
主营:本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。

先介绍几点经验。
1、先通读一遍“系统手册”(不管能不能看懂,先了解个大概,以便学习编程时查找);
2、由位控逻辑入手,逐渐增加定时、计数等条件,把或、与、非关系理顺;
3、进而练习整数运算、实数运算、类型转换;
4、量程转换、PID调节回路的建立及P、I、D参数的理解(最好是有个物理回路验证,比如变频器+电机+测速传感器);
5、循环、顺序、跳转等程序控制(尽量避免跳转,非跳不可时也是跳的越近越好);
6、中断、通讯、位置控制....

本人以ABB工业机器人配件DSQC系列和Motorola MVME系列,GE 卡件 模块 驱动器系列为主攻。各位电工朋友可根据自己的条件选择适合自己的PLC品牌,由于PLC的基本框架大同小异,学会一种至于其它的学习起来也就简单了。