KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
HP A2969A FAST/WIDE DIFFERENTIAL SCSI ADAPTER KIT
FEDERAL VIBRATONE HORN MODEL 450
Wheaton 651490, 1ML SQUARE CRYULE FREEZER BOX 81 VIAL C
INVITROGEN NI2400 STAIN EASE GEL STAINING TRAY 2Pk
RCA VIDICON 4906 ELECTRON TUBE 274J-N
INTERNATIONAL POWER POWER SUPPLY MOD# IHB24-1.2
LOT OF 4 X 50 PKS OF CORNING 4486 STRIPETTE SEROLOGICAL
COSEL MMB50A3 +5 +24 VDC DUAL OUTPUT POWER SUPPLY
DAYTON SOLENOID VALVE MOD# 1A576
VWR? 82024-454 Reversible Microtube Racks, blue, green,
ASCO ACETYLENE/PROPANE METAL HANDLE 2AM
SORVALL INSTRUMENTS SS-34 CENTRIFUGE ROTOR
BECKHOFF KL9505 X-0936 POWER SUPPLY UNIT TERMINAL
TELEMECANIQUE AC CONTACTOR MODEL# LC1 D18 10
LYNDEX C5006-0500 END MILL TOOL HOLDER
LYNDEX C5006-0437 END MILL TOOL HOLDER
AMICON CENTRIPREP YM-30 4322 CENTRIFUGAL FILTER DEVICES
KONTES ULTRA-WARE 1000ml GRADUATED GLASS FUNNEL 120mm X
AMMERAAL BELTECH SP2/EM8/2 00+0 14"X 42-3/4" WHITE CNVR
TRICLOVER DOUBLE PIN HEAVY DUTY 8" CLAMP 13MHHM-8-S
NORD AC HFE 141-230/9 MAIN LINE FILTER UR=250 VOLTS
RAININ RC-L5000 PRECISION PIPETTE TIPS 5000ul QTY.1000
FISHERBRAND 14-376-76 TAINERTOP SAFETY CLOSURES QTY-100
SYMBOL BAR CODE SCANNER BATTERY AND CHARGING STAND
LYNDEX C5006-0375 END MILL TOOL HOLDER
THERMO FINNTIP FLEX 300UL REFILL KIT 1920 TIPS
GATES POLY CHAIN GT2 8MGT-1440-12 BELT
4 x MATRIX TECHNOLOGIES 96 POSITION TEST TUBE RACKS
PARLEC C50-01EM2 END MILL TOOL HOLDER
BANNER OMNI BEAM SENSOR BEAM HEADS MODEL# OSBLV
KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
NUMATICS PLUG IN SOLENOID VALVE
NORGREN ACTUATOR TYPE PRA/8050/M/50
THOMSON BALL BUSHING PILLOW BLOCK BEARING # PB-16
LYNDEX END MILL TOOL HOLDER C5015-0375
LYNDEX END MILL TOOL HOLDER C5026-0375
OSG 55851 SE 1" HSS-CO END MILL CUTTER
Fisherbrand 05-541-29 Microcentrifuge Tube Racks, Natur
NUPRO 1/8" FEMALE NPT BRASS TEE FILTER B-2TF4-90
DELANY FLUSH VAVLE DIAPHRAGM P/N F141ACQ
COMMAND C6ET-0375 END MILL TOOL HOLDER
IEC 398 6 POSITION 367/372 GRAM TUBE HOLDER CENTRIFUGE
visolux vs/z-ga/34 amplifier control unit
LYNDEX END MILL TOOL HOLDER C5016-0437
PARLEC C50-02EM2 END MILL TOOL HOLDER
END MILL TOOL HOLDER M/2405/0071
STAHL INTRINSPAK 9001/01-086-020-00 SAFETY BARRIER
STAHL INTRINSPAK 9001/02-086-020-00 SAFETY BARRIER
TEKNOFLOW VEE-VALV DN20 PN16 20MM DIAPHRAGM VALVE
10 BUSS KTK-R-? 750mA 600V LIMITRON CLASS CC FUSES
COOPER BUSSMAN LPJ-150SP DUAL ELEMENT TIME DELAY FUSE
NORGREN 1/4" POPPET VALVE D1012B-C1
LOT OF 12 UPCHURCH MODEL U-153 TUBING KIT 0.005" I.D. x
PART BOX OF 60 EPPENDORF COMBITIPS PLUS 0.5ml 22 26 720
PART CASE OF 6 RACKS OF EPPENDORF ULTRA MICRO TIPS 20ul
10 SECO CARBOLOY GR 395 SLB-5 1089 CARBIDE INSERTS 5103
10 SECO CARBOLOY GR 380 SEC-442 4489 CARBIDE INSERTS
MOON 6x.456x1-1/4 STG TOOTH SIDE MILL 2 IN BOX
10 SECO CARBOLOY GR 999 SPG-422F 50-88 CARBIDE INSERTS
10 GE CARBOLOY GR 883 CPG-422F 5085 CARBIDE INSERTS
10 GE CARBOLOY GR 78B SPG-422A CARBIDE INSERTS W 39
PART CASE OF 400pcs OF FISHER SCIENTIFIC OMNISETTE TISS
PAIR OF ALLEN BRADLEY 500-TOD94 SIZE 00 9 AMP 600 VAC C
MAC 825C-PM-111BA-552AB AIR CONTROL
FISHERBRAND DISPOSABLE CULTURE TUBES 14-961-27 13x100mm
RAININ PRECISION 1000 UL PIPETTE TIPS RT-1000 768 TIPS
KJ3003X1-BA1
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ALLEN BRADLEY CONTACTOR CAT# 500-BOD93 B 600VAC MAX
4 METRIC EMB CARBON STEEL FITTING EQUAL TEE MT28L
10 METRIC EMB CARBON STEEL FITTING EQUAL TEE MT18L
OGONTZ CO. AMBIENT TEMPERATURE SENSING CONTROL VALVE
LOT OF 2 COOPER BUSS LPJ-100SP LOW PEAK DUAL ELEMENT TI
MILLIPORE UFV2BGC10 ULTRAFREE CENTRIFUGE FILTER DEVICE
MILLIPORE UFV2BTK10 ULTRAFREE CENTRIFUGE FILTER DEVICE
MILLIPORE UFV2BQK10 ULTRAFREE CENTRIFUGE FILTER DEVICE
MILLIPORE UFV2BHK10 ULTRAFREE CENTRIFUGE FILTER DEVICE
PROPPER 48x60 COVER GLASS 12 x 1oz Pks
PROPPER 48x70 COVER GLASS 1 x 10oz Pk
TEXAS INSTRUMENTS DC OUTPUT MODULE 6MT14-40CL
CHARLES AUSTEN DA7 SE PUMP
ENTRELEC VY200 ROTARY DRUM SWITCH 600V
ELTA DRIVER CONTROL BOARD MODEL# 55A
GILSON RHEODYNE 410078 100μL STAINLESS STEEL SAMPLE LOO
VALCOM DIGITAL COLOR PANEL METER C37GV-SA4-Z
RP&C 1-1/4" GATE VALVE CLASS 800 MODEL EF56D
WIKA PRESSURE TRANSMITTER MODEL# 891.23.520
WIKA PRESSURE TRANSMITTER MODEL# 891.23.510
ADEL TOOL CO. SOFT MATERIAL NIBBLING TOOL 18 GAUGE STEE
ALLEN BRADLEY 800T-P16G GREEN PILOT LIGHT
NIB SIEMENS PRESSURE REGULATOR MODEL# 40-50
MARTIN QD BUSHING MODEL# F-STL 3-15/16"
AUTOMATION DIRECT DIFFUSE SENSOR WITH BACKGROUND SUPPRE
CATERPILLAR FILTER ELEMENT MODEL# 4L9851
SCHMERSAL BNS33-12z PROXIMITY SWITCH
PLAS LABS 551-BSRR 1" DIAMETER X 3.75" LONG BROOME REST
NORGREN AIR CONTROL VALVE K71DA00-KS6-KA1
8 x PACKS OF BD Falcon 352059 Round-Bottom Disposable P
TRI DIM TRI CELL AIR FILTER #633212242010
KIMBERLY-CLARK PFR95 N95 MASKS (210 COUNT)
RELIANCE ELECTRIC PC BOARD 0-48652-30
1 RELIANCE ELECTRIC PC BOARD 0-48652-30
LOT OF 7 CR OIL SEALS MODEL # 31189
ENDINE ADJUSTABLE SHOCK ABSORBER OEM 1.0B SP4738A 1
MARATHON 1/4HP 3 PHASE MOTOR PART# 151-039-11
PART CASE OF 9 RACKS OF RAININ RT-L10F AEROSOL RESISTAN
TELEMECANIQUE PROXIMITY SENSOR MODEL# XSD-C607319H7
LOT OF 24 EMB CARBON STEEL T FITTINGS L12
BUSSMAN DISCONNECT SWITCH MODEL# CDNF25
CISCO WS-X5224 24 PORT 10/100 BASE SWITCHING MODULE
Analytical ADV69340A 40ml Screw Threaded Vial. Amber Wi
SCIENCEWARE BEL-ART PRODUCTS 367500000 POLYPROPYLENE SC
WESTINGHOUSE KA-241 AC AMP. METER
BIOMEK AP96 P250 PRE-STERILE WITH BARRIER # 717253 (96
EE CONTROLS E-D1-6BE-1-BM-RG
KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
ON/OFF SWITCH AND ENCLOSUR
TRICLOVER ASME BPE SFF5 INSTRUMENT TEE 1" LINE 1-1/2" M
CUTLER HAMMER C25DND225T 2 POLE CONTACTOR
OMEGA OPTICAL XF3087 480ALP FLUOROPHORE MICROSCOPY FILT
GIBCO BRL HORIZONTAL GEL ELECTRO.APP. 20.25
BECTON DICKINSON PLASTIPAK 20ml SYRINGE. QTY 120
BIMBA FLAT 1 PNEUMATIC CYLINDER FOS-70-0.25
BOX OF 960 MATRIX 7632 TALLTIP PIPET TIPS 30μL
STANPRO SLEXSSP603610/2N09T EMERGENCY EXIT SIGN W/LIGHT
KEYSTONE SCIENTIFIC, INC. 105-701-2 100mm X 2mm BETASIL
3/8 X 3/8 X 1/4 BARB TEE (LOT OF 25)
FOXBORO E92-RFG2H P/I CONVERTER
UNITED ELECTRIC 24 SERIES DELTA-PRO PRESSURE SWITCH
EPPENDORF ep TIPS RELOADS 50-1000ul Cat no. 022491750
JOHNSON CONTROLS P170EA-14C PRESSURE CONTROL SWITCH
RAININ RT-1000F 1000ul PRESTERILIZED FILTER TIPS. 7
1/4 IN COUPLING BARB (BRASS) !!! 100 PIECES
UNITED RECEPTACLE ST7 SERIES
COSMICAR/PENTAX C70306DCPS AUTO VARIFOCAL LENS
WELCH ALLYN 3800LR-12 BAR CODE READER AND STAND
NALGENE 3103-0050 CONICAL CENTRIFUGE TUBE, PPCO 10Pk
PARKER 003-0683-900 VAC-100 PSIG 12 VDC SOLENOID VALVE
MITOS-W TUBING 8FT
CRAMER/CONRAC TYPE 540 INTERVAL TIMER
HAGAN REPLACEABLE CELL OXYGEN ANALYZER REPAIR KIT
FOXBORO TEMPERATURE SENSOR MODEL# PR-14UBS-003
INA GE70 70mm PILLOW BLOCK BEARING
GENERAL BINDING CORP ELECTRIC PUNCH MODEL# 32-20
ANALOG DEVICES LINE POWERED DPM MODEL# AD2016
SQUARE D 2P 50A 600V CIRCUIT BREAKER CAT# FAL2605016M
RUCKER YUKEN DSG-01-3C2-A110-3190 3 POSITION DIRECTIONA
HAMMOND INDUSTIAL PANEL ENCLOSURE PRODUCT# 1414E
ASHCROFT 2000 PSI DURALIFE GAUGE W/ PRESS. LIMIT VALVE
BIMBA PNEUMATIC AIR CYLINDER MODEL# 011-DP-B QD
B 11 807 MOUNTED 6206 BEARING 1.18" BORE (30MM)
BOX OF 100 SUN-SRI 15X45 CLEAR S/N 4ML SILN
ALLEN-BRADLEY 500-A0A93 AC CONTACT
XP POWER SDS120PS05B, 5 VOLT, 22A MAX POWER SUPPLY
FISHERBRAND 36 PLACE CELL DIVIDER 12/PK 03-395-109
KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
PARKER PNEUMATIC SOLENOID SERVICE KIT PS5399
BOX OF 100 FISHERBRAND GLASS PIPETS 1/10 ML
DONGAN 50-0150-053 .15 KVA STEP DOWN TRANSFORMER
PHD SLIDE & CYLINDER SDB23X11/2-J2-J6 WITH PHD CYLINDER
ASCO 8316G301 3 WAY AIR PILOTED SPRING RETURN SOLENOID
RELIANCE CARDPAK 0-49001-5 POWER SUPPLY
ALLEN BRADLEY ASSEMBLED FINGER SAFE RELAY MODEL# 700DCP
LARAD WATER STYLE INSTRUMENT ISOLATOR 1-32-07-03-00
PLASTIC-O-MATIC GAUGE GUARD W/ WIKA 0-30PSI GAUGE
RAININ GPR-L250 GREEN-PAK EMPTY 96 PLACE RACKS WITH LID
RAININ GPR-L10 GREEN-PAK EMPTY 96 PLACE RACKS WITH LIDS
LIN ENGINEERING 5618L-28D-01 4.8 AMP STEPPER MOTOR
STEPSYN 103H7823-1741 4 AMP 1.8 DEGREE STEP STEPPER MOT
THOMSON BALL BEARING SCREW SERIES R R1501
MITOS-R TUBING 7FT
Corning? 9018 96 Well Clear Flat Bottom Polystyrene Hig
MITOS-R TUBING 6FT
SWAGELOK 3/8" TEE X 1/4" MNPT X 3/8" TUBE LOT OF 9
ATRA-FLEX, FLEXIBLE COUPLINGS, A2 RING, A-SERIES, RING
ORIENTAL MOTOR GEAR HEAD 2GN3KA
1/4" TUBE/HOSE ADAPTER (BRASS COMPRESSION TO BARB) 36
MARS 12245 MOTOR RUN CAPACITOR 40MFD 440VAC ROUND (5)!
PARKER MOTION & CONTROL GAUGE ISOLATOR. GT400S -40LK
PARKER HYDRAULICS GAUGE ISOLATOR. GT400S -40LN
PARKER HYDRAULICS GAUGE ISOLATOR. GT420S -40EN
HUBBELL 2128 ADAPTER 15A 125V STRAIGHT BLADE
POTTER AND BRUMFIELD SSR-240D25R 120/240VAC
HONEYWELL SOLID STATE CONTROL MODEL# R7291A 1018
SYLVANIA TYPE P6-40-76 NEMA A600 10 AMP 600 VAC RELAY
THERMO SCIENTIFIC MATRIX 7131 CLIP TIP PIPETTE TIPS 125
KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
KJ3003X1-BA1
TECAN DISPOSABLE PIPETTE TIPS CAT NO. 10 612 340 10 RAC
1/4 IN COUPLING BARB (BRASS) !!! 89 PIECES
APPLIED MOTION AMP 4023-835 SINGLE SHAFT STEPPER MOTOR
FABCO AIR PANCAKE CYLINDER MODEL# THP2-1/2X1/2FFA-TFR
MAC 6211C-000-PM-502DA 4 PORT 2 WAY SOLENOID VALVE
BACH-SIMPSON 40482 MULTI-RATIO CURRENT TRANSFORMER
MITOS-R TUBING 5FT
FESTO LR-3/8-S-7-B PANEL MOUNT PRESSURE REGULATOR
FESTO LR-1/2-S-7-B PANEL MOUNT PRESSURE REGULATOR
1 x 25 Pk of, Corning? 96 Well Clear Round Bottom Plate
SMC NCDGCA50-0300-G59L 145 PSI 2" BORE 3" STROKE PNEUMA
FEDERAL PACIFIC ELECTRIC 3P 50A 240V CIRCUIT BREAKER
1 x 10 Pack Of Corning 3574 384 Well White Flat Bottom
SUN HYDRAULICS FDBA LAN VALVE CARTRIDGE FLOW CONTROL
KEYSTONE / THERMO SCIENTIFIC #055-703-2-CPG 50 x 2mm H
KEYSTONE / THERMO SCIENTIFIC #055-714-2-CPG 50 x 2mm H
KEYSTONE / THERMO SCIENTIFIC #055-163-2-CPG 50 x 2mm H
KEYSTONE / THERMO SCIENTIFIC #055-46-2-CPG 50 x 2mm HP
KEYSTONE / THERMO SCIENTIFIC #053-46-CPG 50 x 4.6mm HP
KEYSTONE / THERMO SCIENTIFIC #055-321-CPG 50 x 4.6mm H
KEYSTONE / THERMO SCIENTIFIC #055-321-2-CPG 50 x 2mm H
RAININ GP-200F 250ul TIP RACK REFILL SYSTEM.
RAININ GP-10F 10ul TIP RACK REFILL SYSTEM 960 TIPS IN 1
ARO VALVE E212KD 120AMP WITHOUT SOLENOID
NORGREN SILENCER VACUUM PUMP
CASE OF ABBOTT REACTION TRAYS 40 TRAYS X 20 WELL 7803-1
LOT OF 2 COMPAIR LTN10/2 OFF DELAY TIMERS .5-6 SECONDS
MOLECULAR BIO PRODUCTS CAT # 3721 PIPET TIPS 10 TRAYS X
MOLECULAR BIO PRODUCTS CAT # 3771-05 PIPET TIPS 10 TRAY
MOLECULAR BIO PRODUCTS CAT # 2070 PIPET TIPS 10 TRAYS X
BOX OF 196 TECAN DISPOSABLE PIPETTE TIPS 200μL
BOX OF 960 BIOHIT PIPETTE TIPS 1200μL
BOX OF 960 EPPENDORF PIPETE TIPS 50-1250μL
INTERBUS IB ST 24 DO 32/2 PAIR
ALLENAIR A-SR-F 2 1/2 X 4 CYLINDER
BOX OF 960 RAININ FINEPOINT PIPETTE TIPS 250μL
KEYSTONE / THERMO SCIENTIFIC #055-321-CPG 50 x 4.6mm H
KEYSTONE / THERMO SCIENTIFIC #055-203-2-CPG 50 x 2mm H
TB WOODS BUSHING MODEL# SFJ3
KEYSTONE / THERMO SCIENTIFIC #055-162-2-CPG 50 x 2mm H
KEYSTONE / THERMO SCIENTIFIC #055-161-2-CPG 50 x 2mm H
KEYSTONE / THERMO SCIENTIFIC #055-46-2-CPG 50 x 2mm HP
KEYSTONE / THERMO SCIENTIFIC #055-701-CPG 50 x 4.6mm H
KJ3003X1-BA1
KJ3003X1-BA1
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KEYSTONE / THERMO SCIENTIFIC #055-163-CPG 50 x 4.6mm H
KEYSTONE / THERMO SCIENTIFIC #055-701-2-CPG 50 x 2.1mm
KEYSTONE / THERMO SCIENTIFIC #055-718-2 50 x 2mm HPLC C
KEYSTONE / THERMO SCIENTIFIC #053-46-CPG 50 x 4.6mm HPL
KEYSTONE / THERMO SCIENTIFIC #055-163-2-CPG 50 x 2mm H
KEYSTONE / THERMO SCIENTIFIC #055-716-2 50 x 2mm HPLC C
KEYSTONE / THERMO SCIENTIFIC #055-181-2-CPG 50 x 2mm HP
AIRCO 801-0601 1/2" FUEL GAS STATION VALVE
KEYSTONE / THERMO SCIENTIFIC #055-850-2-CPG 50 x 2mm HP
AIRCO 801-8001 1/2" GENERAL PURPOSE STATION VALVE
KEYSTONE / THERMO SCIENTIFIC #054-163-2-CPG 50 x 2mm HP
AIRCO 801-0232 1/2" OXYGEN STATION VALVE
FISHERBRAND 02-707-402 SUREONE 100-1250ul PIPET TIPS
KEYSTONE / THERMO SCIENTIFIC #055-775-2-CPG 50 x 2mm HP
KEYSTONE / THERMO SCIENTIFIC #055-775-CPG 50 x 4.6mm HP
KEYSTONE / THERMO SCIENTIFIC #055-161-150 x 1mm HPLC CO
KEYSTONE / THERMO SCIENTIFIC #055-717-2 50 x 2mm HPLC C
KEYSTONE / THERMO SCIENTIFIC #055-402 50 x 4.6mm HPLC C
KEYSTONE / THERMO SCIENTIFIC #055-162-1 50 x 1mm HPLC C
KEYSTONE / THERMO SCIENTIFIC #055-161-1 50 x 1mm HPLC C
CONBRACO R-P&C EF57D 1" FORGED STEEL GATE VALVE
CROUSE HINDS 3 5/8" DIA SEALING COVER EXPLO. PROOF
MONNIER 5A 204-2102-2 1/4" PIPE GUARDED BOWL FILTER
TSUBAKI 50BTL43 SINGLE SIDED HUB TAPER LOCK SPROCKET
KEYSTONE / THERMO HYPERSIL #055-321-2-CPG 50 x 2mm HPLC
KEYSTONE / THERMO HYPERSIL #055-520-2-CPG 50 x 2mm HPLC
KEYSTONE / THERMO HYPERSIL #055-775-2-CPG 50 x 2mm HPLC
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(三)選擇PLC
PLC選擇包括對(duì)PLC的機(jī)型、容量、I/O模塊、電源等的選擇,詳見本章第二節(jié)。
(四)分配I/O點(diǎn)并設(shè)計(jì)PLC外圍硬件線路
1.分配I/O點(diǎn)
畫出PLC的I/O點(diǎn)與輸入/輸出設(shè)備的連接圖或?qū)?yīng)關(guān)系表,該部分也可在第2步中進(jìn)行。
2.設(shè)計(jì)PLC外圍硬件線路
畫出系統(tǒng)其它部分的電氣線路圖,包括主電路和未進(jìn)入可編程控制器的控制電路等。
由PLC的I/O連接圖和PLC外圍電氣線路圖組成系統(tǒng)的電氣原理圖。到此為止系統(tǒng)的硬件電氣線路已經(jīng)確定。
(五)程序設(shè)計(jì)
1.程序設(shè)計(jì)
根據(jù)系統(tǒng)的控制要求,采用合適的設(shè)計(jì)方法來(lái)設(shè)計(jì)PLC程序。程序要以滿足系統(tǒng)控制要求為主線,逐一編寫實(shí)現(xiàn)各控制功能或各子任務(wù)的程序,逐步完善系統(tǒng)的功能。除此之外,程序通常還應(yīng)包括以下內(nèi)容:
1)初始化程序。在PLC上電后,一般都要做一些初始化的操作,為啟動(dòng)作必要的準(zhǔn)備,避免系統(tǒng)發(fā)生誤動(dòng)作。初始化程序的主要內(nèi)容有:對(duì)某些數(shù)據(jù)區(qū)、計(jì)數(shù)器等進(jìn)行清零,對(duì)某些數(shù)據(jù)區(qū)所需數(shù)據(jù)進(jìn)行恢復(fù),對(duì)某些繼電器進(jìn)行置位或復(fù)位,對(duì)某些初始狀態(tài)進(jìn)行顯示等等。
2)檢測(cè)、故障診斷和顯示等程序。這些程序相對(duì)獨(dú)立,一般在程序設(shè)計(jì)基本完成時(shí)再添加。
3)保護(hù)和連鎖程序。保護(hù)和連鎖是程序中不可缺少的部分,必須認(rèn)真加以考慮。它可以避免由于非法操作而引起的控制邏輯混亂。
2.程序模擬調(diào)試
程序模擬調(diào)試的基本思想是,以方便的形式模擬產(chǎn)生現(xiàn)場(chǎng)實(shí)際狀態(tài),為程序的運(yùn)行創(chuàng)造必要的環(huán)境條件。根據(jù)產(chǎn)生現(xiàn)場(chǎng)信號(hào)的方式不同,模擬調(diào)試有硬件模擬法和軟件模擬法兩種形式。
1)硬件模擬法是使用一些硬件設(shè)備(如用另一臺(tái)PLC或一些輸入器件等)模擬產(chǎn)生現(xiàn)場(chǎng)的信號(hào),并將這些信號(hào)以硬接線的方式連到PLC系統(tǒng)的輸入端,其時(shí)效性較強(qiáng)。
2)軟件模擬法是在PLC中另外編寫一套模擬程序,模擬提供現(xiàn)場(chǎng)信號(hào),其簡(jiǎn)單易行,但時(shí)效性不易保證。模擬調(diào)試過(guò)程中,可采用分段調(diào)試的方法,并利用編程器的監(jiān)控功能。
(六)硬件實(shí)施
硬件實(shí)施方面主要是進(jìn)行控制柜(臺(tái))等硬件的設(shè)計(jì)及現(xiàn)場(chǎng)施工。主要內(nèi)容有:
1)設(shè)計(jì)控制柜和操作臺(tái)等部分的電器布置圖及安裝接線圖。
2)設(shè)計(jì)系統(tǒng)各部分之間的電氣互連圖。
3)根據(jù)施工圖紙進(jìn)行現(xiàn)場(chǎng)接線,并進(jìn)行詳細(xì)檢查。
由于程序設(shè)計(jì)與硬件實(shí)施可同時(shí)進(jìn)行,因此PLC控制系統(tǒng)的設(shè)計(jì)周期可大大縮短。
(七)聯(lián)機(jī)調(diào)試
聯(lián)機(jī)調(diào)試是將通過(guò)模擬調(diào)試的程序進(jìn)一步進(jìn)行在線統(tǒng)調(diào)。聯(lián)機(jī)調(diào)試過(guò)程應(yīng)循序漸進(jìn),從PLC只連接輸入設(shè)備、再連接輸出設(shè)備、再接上實(shí)際負(fù)載等逐步進(jìn)行調(diào)試。如不符合要求,則對(duì)硬件和程序作調(diào)整。通常只需修改部份程序即可。
全部調(diào)試完畢后,交付試運(yùn)行。經(jīng)過(guò)一段時(shí)間運(yùn)行,如果工作正常、程序不需要修改,應(yīng)將程序固化到EPROM中,以防程序丟失。
(八)整理和編寫技術(shù)文件
技術(shù)文件包括設(shè)計(jì)說(shuō)明書、硬件原理圖、安裝接線圖、電氣元件明細(xì)表、PLC程序以及使用說(shuō)明書等.
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