描述

DSQC609 3HAC14178-1PBSE5117

IO的采樣數(shù)據(jù)經(jīng)CPU轉(zhuǎn)換后變?yōu)檎螖?shù)據(jù)或?qū)嵭螖?shù)據(jù)，在操作級(jí)網(wǎng)絡(luò)（第二層網(wǎng)絡(luò)）上傳輸。因此操作級(jí)網(wǎng)絡(luò)可以采用數(shù)據(jù)吞吐量適中、傳輸速度快、連接方便的網(wǎng)絡(luò)標(biāo)準(zhǔn)，同時(shí)因操作級(jí)網(wǎng)絡(luò)一般布置在控制室內(nèi)，對(duì)抗干擾的要求相對(duì)較低。因此采用標(biāo)準(zhǔn)以太網(wǎng)是最佳選擇。TCP/IP協(xié)議是一種標(biāo)準(zhǔn)以太網(wǎng)協(xié)議，一般我們采用100Mbit/s的通訊速度。
PLC系統(tǒng)的工作任務(wù)相對(duì)簡(jiǎn)單，因此需要傳輸?shù)臄?shù)據(jù)量一般不會(huì)太大，所以常見(jiàn)的PLC系統(tǒng)為一層網(wǎng)絡(luò)結(jié)構(gòu)。過(guò)程級(jí)網(wǎng)絡(luò)和操作級(jí)網(wǎng)絡(luò)要么合并在一起，要不過(guò)程級(jí)網(wǎng)絡(luò)簡(jiǎn)化成模件之間的內(nèi)部連接。PLC不會(huì)或很少使用以太網(wǎng)。

從應(yīng)用對(duì)象的規(guī)模上來(lái)說(shuō)。
PLC一般應(yīng)用在小型自控場(chǎng)所，比如設(shè)備的控制或少量的模擬量的控制及聯(lián)鎖，而大型的應(yīng)用一般都是DCS。當(dāng)然，這個(gè)概念不太準(zhǔn)確，但很直觀，習(xí)慣上我們把大于600點(diǎn)的系統(tǒng)稱為DCS，小于這個(gè)規(guī)模叫做PLC。我們的熱泵及QCS、橫向產(chǎn)品配套的控制系統(tǒng)一般就是稱為PLC。

JACUZZI Y900958 62x43x19 GALLERY ALMOND FIBERGLASS BATH

DAYTON 30″ INDUSTRIAL FAN CIRCULATOR 159206

DAYTON 30″ INDUSTRIAL CIRCULATOR FAN 2HP 115/230V 32938

JACUZZI C540969 42×60 OYSTER WHIRPOOL BATH 160669

CLARE OLB-3R 104,400 OUT LOWBOY OIL FURNACE 94191

JACUZZI 9590959 55″x55″ WHITE WHIRLPOOL BATH 160129

DAYTON 36 INCH EXHAUST VENT 153723

WINSMITH 930* 30:1 METRIC SPEED REDUCER 58:RPM 65974

KNF FLEX PAK BAGS IND POLY 1000/CASE KNFFLEXPAK 146142

CARRIER 17M4211053 10 3/8″ DIAMETER LABYRINTH 150167

CARRIER 50HQ-900541 LOOP CONTROLLER W/A-B OPTION 146289

2.4 GHZ PARANOLIC SOLID DISH ANTENNA LWA021 153277

BLACK BOX MT726A FRAME RELAY ACCESS DEVICE SWITCH

NEW LAU BLA30-30H1.69 BELT DRIVE BLOWER ASSEMBLY 56089

NORTEL AS3104004 20-PORT 10/100 CENTILLION SWITCH

AMERICAN POWER CONVERSION SP562A BATTERY KIT 153717

BLACK BOX MT1000A-E1-13 E1 FIBER MUX 1300NM 155309

CANOGA PERKINS 3240-BU-31-7-M MULTIPLEXER 153043

BLACK BOX LCL163A FDDI REPEATER 153868

VESTIL BLACK-STEEL PLATFORM TRUCK E-CART 147162

EXPANSION MODULE MX223C 153784

PEERLESS MI-03-SV-WPC 70,000 PACKAGED HOT WATER BOILER

BLACK BOX LWU0200-E-US LASER BASE UNIT W/POWER 156986

BRIDGE/ROUTER EXPANDABLE LR6014A-R3 154165

RATE ADAPTIVE DSL LAN EXTENDER 800 LR0061AE 153860

TRANE MCW530AMUA0 2.5 TON MINI-SPLIT INDOOR UNIT 16315

ADP F0AN-100-1-1-1 100,000 BTU NATURAL GAS UNIT HEATER

MITSUBISHI PKH30FL 2.5 TON INDOOR HEAT PUMP UNIT 146003

ESPRIT MX9072 MULTIPLEXER 154163

DAYTON 48″ SLANTWALL EXHAUST FAN BELT DRIVE 13445

BLACK BOX MX9020A TIME DIVISION MULTIPLEXOR 162917

KOHLER K-16210-4A-BN 2-HANDLE BATH FAUCET W/HANDSPRAY

BLACK BOX LB-MGM-BASIC LASER MANAGEMENT SOFTWARE

DAYTON EXHAUST VENTILATOR/CENT?RIFUGAL DOWNBLAST 160087

CARRIER 17FA552-118 11″ BLADE RING ASSEMBLY 150369

PHOENIX TH6812V2 6800 CFM EVAPORATIVE COOLER 166004

BLACK BOX LR1112A-E1 4-PORT E1 ROUTER RACKMOUNT 155275

BLACK BOX LR1114A-E1 8-PORT E1 ROUTER 155276

BLACK BOX LR1114A-T1 RACKMOUNT 8-PORT T1 ROUTER 155277

BLACK BOX MT185A T3 4-PORT MULTIPLEXER 155310

MITSUBISHI PK36FK 37,200BTU INDOOR FANCOIL UNIT 148153

MITSUBISHI PK36FK 3T AC 37,200BTU INDOOR AIR HANDLER

TRANE CSHS100KB*UB 10 TON SCROLL COMPRESSOR 70177

ZURN Z548-3HB 3″ FLOOR DRAIN WITH CLEANOUT 160311

BLACK BOX TS715A SIMM MEMORY TESTER 159707

BELDEN 9553 CABLE 300:VOLT AWG:18 154394

CARRIER 19DM3321504 DISCHARGE VOLUTE 3 FOR:19D-SERIES

WINSMITH 943MDNS15DLR132?-B542 METRIC SPEED REDUCER 15:1

TRANE 2TEE3F62A1000A 5 TON MULTIPOSITION FAN COIL R22

MILLIPORE CORPORATION FTPF05441 DEGASSER 145862

DAYTON 1/2-2 HP EXHAUST VENTILATOR 551-875 RPM 146597

BLACK BOX TD202-R2 ETHERNET AND TOKEN RING BOOKS 156337

ECOLOGIX DRT60 3.5 TON AIR HANDLER 153384

PHOENIX PD6231 AEROCOOL EVAPORATIVE COOLER 230V 159012

WEG 03018EP3E286T 30 HP ELECTRIC MOTOR RPM:1755 153341

ASTERIA 9760959 59×59 CORNER WHIRLPOOL BATH 160798

RHEEM RAND-048DAZ 4 TON 13 SEER SS AIR CONDITIONER

CARRIER 17DA831104 SHAFT 5″DIA X 43″L 150176

RHEEM RANL-048YAZ 4 TON SS AIR CONDITIONER 3-PHASE

HEATILATOR GDST60I 36″ TWO SIDED NATURAL GAS FIREPLACE

HEATILATOR GDST60I 36″ 2-SIDED NATURAL GAS FIREPLACE

HEATILATOR GDST60I GAS FIREPLACE 36″ TWO SIDED

ICP PAB048N1H 4 TON ROOFTOP AIR CONDITIONER 56517

DAYTON 20″ BENCH DRILL PRESS 1HP 120V 60HZ 16AMPS 70241

REZNOR HMA400AL42VTSE2?N 400,00 BTU DUCT FURNACE TUBES

CARRIER 50HQ-900521 LOOP CONTROLLER W/ B OPTION 146286

SQUARE D DT362 FUSIBLE SAFETY SWITCH 161221

DAYTON 36″ FAN CIRCULATOR 1 HP 115/230V 1140:RPM 91777

DAY AND NIGHT C9MPV050F12D 50,000 GAS FURNACE 92%

MITSUBISHI CMB-106NU-F BC CONTROLLER 208/230V 145999

MITSUBISHI CMB-106NU-F BC CONTROLLER 208/230 VOLT

WINSMITH 935MDSN METRIC SPEED REDUCER 5:1 345:RPM 45999

WINSMITH 935MDSN50DLR90-?B1435 SPEED REDUCER 50:1 61542

COPELAND ZR16M3-TW7-568 13 TON SCROLL AC/HP COMPRESSOR

WINSMITH 943MWNS076X0GC METRIC SPEED REDUCER 60:1

JACUZZI K374969 60″ OYSTER FIBERGLASS BATH 160252

WEG 02518EP3E284TC 25 HP MOTOR 208-230/460 VOLT 159310

TRANE 2TEE3F65A1000A 5 TON MULTIPOSITION FAN COIL 55459

DAYTON 36″ INDUSTRIAL HAZARDOUS LOCATION AIR CIRCULATOR

MI-T-M GC-2403-0MHB 5.5HP PRESSURE WASHER 2400PSI 81640

RHEEM RPNL-042JAZ 3.5TON 13 SEER SPLIT SYSTEM HEAT PUMP

RHEEM RPNL-042JAZ 3.5TON 13SEER SPLIT SYSTEM HEAT PUMP

CHAMPION COOLER 4001DD-N43/48D EVAPORATIVE COOLER 53789

DAYTON 36′ CABINET EXHAUST FAN/RPM 611 156894

CARRIER 50HQ-900531 LOOP CONTROLLER W/ C OPTION 146287

THERMO SCI BARNSTEAD LABLINE 95097 PREMIUM CONTROLLER

AVAYA HD-700009517-EX?PO SYSTIMAX OPTICAL CABLE 156301

DAYTON 5VD79A 150,000 INFARED TUBE HEATER 152403

CORNING TB110FNRUL 540 FEET FIBER OPTIC CABLE 154396

ETHERNET CISCO2505#CH(UT?P HUB PORTS)DUAL SERIAL RT

KOHLER K-1164-47 72×42 ALMOND WHIRLPOOL BATH 160573

DAYTON SUPPLY VENTILATOR/DIRE?CT DRIVE DOWNBLAST 160086

TRANE CSHB175KO*OM 17.6T REFRIGERATION COMPRESSOR 10638

U-LINE ULN-BI98WH-00 ICEMAKER, 23 LBS/DAY, WHITE 49232

DAYTON 1-HP HI VOLUME & VELOCITY CIRCULATOR FAN 60469

COZY 90N75A 75,000 BTU FLOOR FURNACE 159688

MULTI SERVSWITCH KV155A-SFI 153220

TRANE TDX1B040A9H21B 40,000 DOWN/HORIZ GAS FURNACE 91%

TRANE TDX1B040A9H21B 40,000 DOWN/HORIZ 91% GAS FURNACE

DAYTON 36 INCH TUBEAXIAL FAN 162549

A HIGH SPEED T1 FORMAT PROCESSOR MT202A-449-R2 153235

BLACK BOX EB-LR3001A-CT21 REMOTE BRIDGE/ROUTER 155142

RHEEM EGSP30-B 30 GALLON 240 VOLT WATER HEATER 160639

BLACK BOX TD115VE#R3 SERIAL TEST COMPROBE FOR WINDOWS

ALLEGRO 9516 115/230 VOLT HIGH OUTPUT BLOWER 158058

AO SMITH BN37 7.5 HP MOTOR 230/460 VOLT 1765 RPM 81637

WINSMITH 935** 60:1 METRIC SPEED REDUCER 29:RPM 66342

TRANE 2TEE3F49A1000AA 3.5TON MULTIPOSITION FAN COIL R22

TRANE 2TEE3F49A1000AA 3.5T MULTIPOSITION FAN COIL R22

TRANE 2TEE3F49A1000AA 3.5t MULTIPOSITION FAN COIL R22

TRANE 2TEE3F49A1000AA 3.5Ton MULTIPOSITION FAN COIL R2

TRANE 2TEE3F49A1000AA 3.5ton MULTIPOSITION FAN COIL R2

BLACK BOX SW998A-R2 16 TO 1 SERVMANAGER 159710

JACUZZI B540969 42″ x 72″ OYSTER WHIRLPOOL BATH 160680

DAYTON 4ZA51A 230 VOLT, 3 HP CENTRIFUGAL PUMP 165130

BLACK BOX LR7001A-25 LASAT SAFEPIPE 25 155280

SMARTVUE S2C4/EU 4MM WIRELESS CAMERA 162957