NZM-0002-A雙線信號模塊
NZM-0002-A雙線信號模塊
NZM-0002-A雙線信號模塊
一、摘要 PLC是一種專門在工業環境下應用而設計的數字運算操作的電子裝置。
它採用可以編制程序的存儲器，用來在其內部存儲執行邏輯運算、順序運算、計時、計數和算術運算等操作的指令，並能通過數字式或模擬式的輸入和輸出，控制各種類型的機械或生產過程。PLC及其有關的外圍設備都應按照易於與工業控制係統形成一個整體，易於擴展其功能的原則而設計。在工業生產的各個領域，機械加工企業為了提高生產效率，採用機械化流水作業的方式，對不同類型的零件分別組成的自動生產線。隨著產品機型的更新換代，生產線承擔的加工對象也隨之改變，這就需要改變控制程序，使生產線的機械設備按新的工藝過程運行，而繼電接觸器控制器係統是採用固定接線，很難適應這個要求。大型自動生產線的控制係統使用的繼電器數量很多，隨著PLC的應用日益普及,其使用方法簡單,便於掌握,且可靠性,抗幹擾性很強,自身具有完善的功能.模塊化的結構,使其在工業生產線上的應用越來越廣泛。
發展趨勢：1.向高速度、大容量方向發展
為了提高PLC的處理能力，要求PLC具有的響應速度和更大的存儲容量。目前，有的PLC的掃描速度可達0.1ms/k步左右。PLC的掃描速度已成為很重要的一個性能指標。
在存儲容量方面，有的PLC可達幾十兆字節。為了擴大存儲容量，有的公司已使用了磁泡存儲器或硬盤。
2.向超大型、超小型兩個方向發展
當前中小型PLC比較多，為了適應市場的多種需要，今後PLC要向多品種方向發展，特別是向超大型和超小型兩個方向發展。現已有I/O點數達14336點的超大型PLC，其使用32位微處理器，多CPU並行工作和大容量存儲器，功能強。
Econco Rebuild 7237 Linear Amplifier Tube
Econoline BG07 Tool Balancer 5-10Lb.Range 8ft.Travel Distance
Econ-O-Mite D745 1/2"x50' 200psi Spring Retratable Air Hose Reel USA
Edison JDL30 JDL 30 HRCI-J Type D Class J 30 Amp Time Delay Fuse 600V
Edwards 340-4N5 Adaptabel 120V Vibrating Bell 4" Dia
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EG&G Sealol 9517 Mechanical Seal Assembly
EG&G Sealol RAD 6840 Mechanical Seal Pump Repair Part
EG&G SEALOL RSD 3913 Mechanical Seal In Box
EG&G Sealol RSD-76003 L25x37x10 Cartridge Type Labyrinth Seal
EG&G TWA-C-4 Transmitter 1470-2099 Hz Range 4-20mA
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Electrical enclosure steel wall mount cut out box 17-3/4"x9-3/4"x5-3/4"
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Elkhart Products 200W Ball Valve 1/2" "Shark Bite" Style Inline Push Fitting
ELM2 Emergency Back-up LED Light Fixture Unit 120/277V 90min
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EMB Papst Aluminum 7-7/8" Dia Axial Fan 230V 50/60Hz 64/80W Thermally Protected
Emerson TPL-61-6001-11 Shunt Industries Fuse Panel Assembly 600 Amp 145 Volt DC
Emhart Warren Tucker B108 E100 628 CPU Board
Empro A 600 50 Shunt 600 Amp 50MV
EMX D-Tek Vehicle Loop detector w/11 pin male plug-in
Enamelled Heavy Magnet Wire 0.766mm Dia 60Lb Roll 18 AWG Copper Coil Winding
ENDO EHW-120 Air Hoist 6.6 Feet (1.9 Meters) Lift 264 LBS (120KG) Capacity
Endress + Hauser DMC-50589 Flow Meter Digital Display Panel
Enermax EG365P-VE PC Computer Power Supply Dual Fan
Enerpac 20 or 25 Ton Cylinder With 5" Stroke Approx. 2.58" Bore No Tag Works
Enerpac A-242 Coupling For 25 Ton RC Cylinders
Enerpac E10 1Q07 6' Genuine OEM 10000psi Hydraulic Jack Hose W/Fittings
Enerpac Grooved Saddle For RW 5 Ton Cylinder A53-G
Enerpac IC 300 Control Station Pendant 3-way 115VAC VS-3 VSR-3
Enerpac RC57 5ton Hydraulic Rum Cylinder 10-7/8"long Great Condition
Enerpac RCH-120 Hydraulic hollow 12 ton 5/16 stroke hydraulic cylinder
Enerpac-C-102 10 Ton Cylinder No Quick Coupler
ENI HPG-2GE-11621 High Voltage RF Frequency Power Generator 200 Watt For Repair
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Entrelec VY20 Rotary cam disconnect switch 600VAC 20A 3PH 3 Stages
EPE 2.140P10 Replacement Filter Element
ER25 Spring Collet Various Sizes Lot of 10
ER32 20mm Single Angle Spring Collet Lot of 12
ER32 Single Angle Spring Collet Assorted Lot of 14
ER40 Spring Collet Metric 26mm
Erickson 100DA0344 0.34375" 11/32" Double Angle Collet
Erickson 100DA0438 0.4375" 7/16" Double Angle Collet
Erickson 100TG0750 0.750" Bonded 100 TG Series Single Angle Collet 3/4"
Erickson 180DA0344 11/32" 8.73MM Double Angle Collet
Erickson 180DA0422 0.421875" 27/64" Double Angle Collet
Erickson 50TG0433 0.433" 11MM Single Angle Collet
ERico Cadweld L-160 Clamp Handle Great Condition
Erico/Caddy 4H58 812M Conduit Hangers 1/2-3/4" Attached Beam Clamp Lot 28
ESAB Sureweld SW-15 811001106 Welding Electrode E6013 3/32"x12" 25lb Box
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Eupec 52915-027-50 Forklift Power Block Module
Eupec TD 106 N KOF 25H3 Powerblock Module
EuroPlacer E101359B LED Light Bracket Lot of 2
Eutectic Castolin 19985 Ni-Cr-Fe Alloy Welding Powder 3.3Lb. Sealed Container
Evans 0650 Pocket Hole Machine Slide Assembly Replacement Part
EW-3/4 Thrust Bearing NIB
Ex-Cello-O DP-42-H-163P.025 6A Carbide Insert Grade 6A Box of 4pcs
Excelon 2992-20 Filter
Eye Bolt Shoulder Steel Zinc Plated Standard Lifting M12X1.75mm Lot of 10
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Eyebolt Shoulder Lifting Zinc Plated M20X2.5mm 30mm Shank Lot of 6
EZGO Golf Cart 70724G01 1994-2001.5 TXT Medalist Steering Rack Repair Kit
F74G-4AN-QD1 Pneumatic Filter w/Drain 250 PSI 1/2" NPT
Fabco-Air MSV-1 OY154 Micro Limit One-shot Pulse Valve Push Button Switch
Fabric Conveyor Belt 10' X 12-1/8" 0.200" Thick W/ lacing on end
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豫公安備 41010502000017號