描述
随着科学技术的发展,可编程序控制器PLC在工业控制中的广泛应用,它的可靠性直接关系到工业企业的安全生产和经济运行.而PLC控制系统的抵抗干扰的能力是整个生产系统可靠运行的关键.目前,各种类型的可编程序控制器PLC一般集中安装在集控室或是生产现场,它们大都处在强电电路和强电设备所形成的恶劣电磁环境中.所以,要提高PLC控制系统的可靠性,一是需要PLC生产厂家提高PLC硬件的抗干扰能力,二是需要工程设计人员充分利用PLC组态软件来消除干扰,这样才能有效地增强系统的抗干扰的性能.PLC控制系统由于具有功能强、程序设计简单、扩展性好、维护方便、可靠性高、能适应比较恶劣的工业环境的特点,因此在工业企业广泛应用.但是由于工业环境条件恶劣,以及各种工业电磁,辐射干扰等,影响PLC控制系统的正常工作,因此必须重视PLC控制系统的抗干扰设计.为防止干扰,可以采用硬件和软件相结合的抗干扰方法. 防止硬件干扰的方法有:1采用性能优良的电源来抑制电网引入的干扰2电缆的选择与铺设来降低电磁干扰3完善接地系统4采用光电隔离来抑制输入输出电路引入的干扰等.而利用PLC软件来减少干扰是PLC控制系统正常、稳定工作的重要环节.下面主要分析在生产实践中应用的利用PLC组态软件来减少干扰的方法:随着工业企业自动化技术的发展,PLC (Programmable Logic Controller,又称可编程控器),以其可靠性、灵活性、优良的性能价格比、使用方便等特点在工业控制领域迅猛发,得到了越来越广泛的应用石油焦是铝电解用碳素阳极生产的主要原料。石油焦转运系统,是把贮存在仓库中的石油焦,经过破碎筛分处理成满足煅烧需要的原料,输送到煅前料仓。由于该系统逻辑控制点多、自动化程度高、上下游设备间关联度大,所以选用PLC进行自动控制,并设立上位机进行全系统监控。本文着重讨论PLC在系统中控制功能的实现和上位机监控界面的开发。
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主营DCS系统配件
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DEC L0121 M.CACHE HSC95 OPTION 32MB
DEC HS1CP-C DEC SCSI/DSSI CONTROLLER BOARD
DEC H7423-AA TU78/79 POWER SUPPLY
DEC M7639 SEE MS200
DEC M8208 MODULE
DEC M8016-YB MODULE
DEC MS7CC-UA UPGRADE MEMORY KIT
DEC MS7CC-GA DEC 4 GB MEMORY FOR ALPHASERVER 8XXX
DEC MTXLB-AA 60 KEY POS KEYBOARD WITH
DEC MSP01-KB 256MB MEMORY KIT
DEC MS520-BA 32 MG MEMORY MODULE
DEC MS451-FA 512MB MEMORY ALPHA 2100
DEC MS88-DA VAX 8550/8800 64MB MEMORY
DEC PMTNV-A CARD
DEC PS1XG-AA VIDEO GRAPHICS ADAPTER W/MOUSE
DEC SHZ35-ZZ SCSI CONVERTER BOX
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DEC SWXSS-01 EXPANSION STORAGE
DEC SWSA1-BC SW ADAP-SUN DIFF/FAST SCSI
DEC T2029-AC VAX7000.620 MODULE
DEC T2025 MODULE
DEC SHZH1-DT HARD DRIVE IN CANISTER
DELL 330NK DELL POWEREDGE MOTHERBOARD
GENICOM CA02626-E240 LN40 TONER HOPPER
GENICOM CA02626-E304 LN40 PAPER FEED ASSY 3
HEWLETT PACKARD 005-44289 HP MOTHER BOARD
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EMC 005040997 CLARIION POWER SUPPLY
GENICOM CA02626-E250 LN40 TONER HOPPER
EMC 005-41330 10SLOT INTERCONNECT PCB
HEWLETT PACKARD 107003856-00 HP MOTHER BOARD
HEWLETT PACKARD 5150-60023 VERTICAL DRIVE ASSEMBLY
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HEWLETT PACKARD 98268-66520 4MB PCB MEMORY MODULE
HEWLETT PACKARD C1160-67936 HP OPTICAL JUKEBOX CTRL BOA
HEWLETT PACKARD A3641-80022 KX70/98KS 180MHZ PROCESOR B
HEWLETT PACKARD C1160-66508 HP OPTICAL JUKEBOX SCSI BOA
HEWLETT PACKARD 630214-202 NETSERVER DUAL PROCESSOR BOA
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HEWLETT PACKARD C5173-89007 DLT7000 35/70GB TAPE DRIVE
HEWLETT PACKARD C4118-69001 FUSER KIT HP4000
HEWLETT PACKARD C7200-66521 HP SURESTORE FC INTERFACE B
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HEWLETT PACKARD J3136-61001 HP ADVANCESTACK PWS REDUNDA
HEWLETT PACKARD J3299A HP PROCURVE SWITCH 224M
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HITACHI 667830-004 VISIONBASE 8460 CARRIER MEMORY
HITACHI 667829-304 VISIONBASE 8460 CARRIER MEMORY
HITACHI 667383-005 VISIONBASE 8460 POWER SUPPLY
HEWLETT PACKARD D6530-60005 D6530-60005
HITACHI 662379-404 VISIONBASE 8460 MOTHERBOARD
HIT 2098174-A 3PHASE AC POWER SUPPLY
IBM 04N4317 IBM 940X OPERATOR PANEL ASSY
HEWLETT PACKARD ZTC22942680 HP POWER SUPPLY
HITACHI DPS-420CB VISIONBASE 8460 POWER SUPPLY
HITACHI 671317-007 VISIONBASE 8460 MOTHERBOARD
IBM 00G3165 7013 I/O PLANER BOARD
HEWLETT PACKARD J3136A HP ADVANCESTACK PWS REDUNDANT
IBM 00G2503 650W POWER SUPPLY
HITACHI 668492-004 VISIONBASE 8460 BACKPLANE MOD.
IBM 07H5225 IBM POWER CABLE ASSY
IBM 05J8924 IBM DUAL CHANNEL SCSI ADAPTER
HITACHI 668445-204 VISIONBASE 8460 BACKPLANE MOD.
IBM 05J8911 IBM MEMORY CARRIER MODULE
IBM 07H6255 IBM 9672 TESTER BOX ASM
IBM 21F9345 IBM 9406-F80 CABLE 2 PORT ADA
IBM 09G7649 IBM 3490 READ DETECT CARD
IBM 31G9751 SYSTEM BOARD
IBM 31G9740 7013 I/O PLANER BOARD
IBM 34L3582 IBM MODULE ASSY
IBM 37L2406 AGP 3D-PRO 4110 VIDEO CARD
IBM 44H2731 IBM ACI-4M SYSTEM POWER
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IBM 44H8304 IBM 940X SPCN MODULE
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IBM 65G7623 SYSTEM BOARD
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IBM 44H8421 IBM 940X REMOVABLE MEDIA CAGE
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IBM 8184913 IBM 7013 CPU PLANAR
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INTERPHASE 9000-0751-006 INTERPHASE 9000-0751-006 BOARD
IBM 8193663 IBM AS/400: HIGH SPEED COMM IO
JNI FCE-1473-N JNI 2GB FC HOST BUS ADAPTER
MARCONI NM-4/155UTP5C MARCONI 4-PORT 155MBPS MODULE
LUCENT 750A030150 LUCENT PACKETSTAR ICM CARD
MARCONI NM-4/155MMSCE 4-PORT OC3 MULTIMODE MODULE
MARCONI 7401-00 FORE POWERHUB 7000 ATM
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MISC 01-03E121202 RACAL-MILGO OMNIMODE96 UNIT
MARCONI NM-1/622MMSCD FORE 1-PORT 622MBPS MODULE
MARCONI ESX-48-FAN ESX-4800 FAN TRAY ASSY
LSI 356-0003856B QUAD-PORT 10/100 ETNET ALPHA
MARCONI NM-4/155UTPLC MARCONI 4-PORT 155MBPS UTP
MISC 311-0006-002 GS/E SWITCH CONTROL MODULE
MARCONI NM-4/155UTP5LC FORE 4-PORT 155MBPS MODULE
MISC 55000325 PC/XEM HOST ADAPTER BOARD
MISC 6210518-01 TL810 Y-AXIS UMBILICAL CABLE
MISC 22946600 ARTYSAN POWER SUPPLY
MISC 40004049-001 DIAMOND FIRE GL4000 VIDEO CARD
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MISC 04006-T90 PCMCIA ROAMABOUT
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MISC 530-0022-001 GS/E SWITCH CONTROL MODULE
MISC 600-ATX DUALPOWER 600 ATX PWS 600W
MISC 34-44529-09 34-44529-09
MISC 530-0011-001 DGBGA-AA BACKPLANE BOARD
MISC 10273-01B LOAD CARD ASSY
MISC 520-0022-001 GS/E SWITCH CONTROL MODULE
MISC 140E38452 LN28 POWER SUPPLY 115V
MISC 2T-ADPDG-AB DIGI PORTS
MISC 5190020G2 LEESON HUB MOTOR 60HZ
MISC 9720-736 736MB SABRE DRIVE W/PWS*AS IS*
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NORTEL 700231-001 100-240VAC POWER SUPPLY
PCB 200007B-06 1GB BASE SX PCI FIBRE CHANNEL
PERTEC 77021240 TU80/81 MODULE
PRINTRONIX 110988-901 PRNTRONIX SHUTTLE AASY
NETAPP XL401R-S-02Z NETAPP SE SHELF STORAGE ARRAY
QUADRICS QM400 AS SC40/SC45 INTERFACE MODULE
NORTEL NTEP05AA-05 NORTEL PASSPORT TERMINATOR MOD
MYRICOM M2F-PCI32 MYRICOM INTERFACE MODULE
PRINTRONIX 112315-001 PRINTRONIX IGP-2X0 CONFG. BOAR
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CS11 PDP 11/44 Emulex Module CS1110201-H2
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DEC 54-30210-01 MODULE.
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DEC H720-E POWER SUPPLY
DEC H3220 20 MA ADAPATER PDP11/70
DEC DSW42-AA SYNC LOGIC MODULE
DEC M7732 OPT CHAR SET MODULE
DEC MSP01-HF COMP 512MB MEMORY KIT COMPATIBLE
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HEWLETT PACKARD A1809-60129 HP POWER CONTROL MODULE
HEWLETT PACKARD A5599-70001 HP DLT8000 SCSI-HVD LOADER
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MISC 155-0185-01 32Z PCI VIDEO BOARD DUAL
MISC 29-26372-00 TU80/81 POWER SUPPLY
NATIONAL INSTRUMENTS AT-GPIB-TNT NATIONAL INST. INTERFA
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SUN 370-6152 USB/FIREWIRE OPTION MODULE FOR SUNPCI III
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ADIC FASTSTOR 22 DLT8000 LVD/SE.LR TAPE 40-5008-04
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Hewlett Packard Compaq ProLiant DL580 G2 347905-001
HP A9795A 2 X 1.3GHZ ITANIUM CPUs “no HD,no Memory”
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COMPAQ 157925-001 6-SLOT PCI RISER CARD
COMPAQ 154996-001 M2200 STRWS ENCLOSURE ONLY
COMPAQ 164098-001 CPQ HUB,12 PORT MANAGEMENT MODULE
COMPAQ 166861-001 PS/2 TWO-BUTTON MOUSE
COMPAQ 188407-001 PROLIANT 4500 POWER SU-
COMPAQ 190211-001 STORAGEWORKS 4354R ULTRA3 RACKMOUNtab
COMPAQ 175312-001 PASS-THROUGH MECHANISM
COMPAQ 231674-001 MSL5026 BACKPLANE WITH CAGE
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COMPAQ 340845-001 TL895 TAPE DRIVE MUX BOARD
COMPAQ 323386-001 MEDIA SERVICE MODULE
COMPAQ 3R-A0409-AA 9.1GB 10K RPM WULTRA3 SCSI*NEW
COMPAQ 3X-DEPVD-AA VIDEO/ETHERNET HOST ADAPTER
CRAY 905-5242-302 CRAY EXTERNAL SNMP DIRECT ACCE
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DATA SYSTEMS DLP-11 DATASYSTEMS DLP-11 MODULE
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DEC 70-32529-05 PENTIUM PRO PROCESSOR
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DEC B4171-AD DEC COOPER I/O RISER MODULE
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DEC DS-SL13R-BA STORAGEWORKS 4354R ULTRA3 RACKMOUNtable
DEC FD-59761-01 DGBGB-AA FAN TRAY ASSY
DEC DEFCN-MA MODULE
DEC FR-PCP9E-BB DIGITAL NOTEBOOK
DEC H7202-B VAX 11-725 POWER SUPPLY
DEC DEFGE-AA DEFGE-AA
DEC H3063-A BULK HEAD ASSY
DEC DTMXM-MA DECMAU 900TH 24-PORT TOKEN RING
DEC H7225-AC POWER CONDITIONER
DEC FD-51861-01 LG05S/LGPLUS FRONT DOOR ASSY
DEC DEFGB-BA GIGASWITCH POWER INT.UNIT
DEC L0122-AA MS88-DA 64MB MEMORY MODUL
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DEC H721 POWER SUPPLY
DEC KN220-AA KN220-AA DECSTATION 5500
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DEC KN431-AA DEC CPU MODULE
DEC L0123-BA HSC95 MODULE
DEC KN01-AA KN01-AA
DEC H7872-A POWER SUPPLY
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DEC LQP45-A FULL CHARACTER LETTER
DEC M7552-PA RRD50 QBUS CONTROLLER
DEC MSP01-EA CACHE MEMORY OPTION
DEC MS452-UB 128 MB MEMORY KIT
DEC P2000-AA NVRAM EDC MEMORY CARD
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DEC MSP01-FA 32 MB DIMM 4X8MB
DEC MS330-FA 1GB ALPHASERVER 4100 MEMORY
DEC PT-500A/G POWER OUTLET 12AMPS 48/63 FROM: DA-261C1-
DEC MSP01-EB 3 X 54-23240-03
DEC OTTO-C FIBER OPTIC OPTION
DEC SHZD1-ZZ DRIVE IN CANNISTER
DEC RZ29C-W 4.3 GB WIDE SCSI DISK DRIVE
DEC SN-PBXGI-AA PBXGI-AA
DEC VT11 BACKPLANE
DEC RF3X-SF BRACKET FOR DRIVE
DEC SN-MSP01-KB 256MB MEMORY KIT
PLC模块,可编程控制器,CPU模块,IO模块,AI模块,通讯模块。AB/施耐德/ABB/GE/本特利/西屋/英维斯/霍尼韦尔/黑马/FU克斯波罗
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