通訊方式是利用美ni公司的工控機與臺達vfd-b系列變頻器的rs-485串口通訊。工控機的控制器為 ni pxi-8106，自帶1個rs-232通訊串口。由于系統還需要與儀表和plc通訊，而且變頻器、儀表和plc三者之間的通訊協議不同，工控機另配有1塊串行通訊模塊ni pxi-8431(含有兩個rs-485串口)。使用工控機rs-232串口和臺達變頻器的rs-485串口通訊，中間需加rs-232/rs-485轉換器，如圖1所示。如果使用串行通訊模塊ni pxi-8431的rs-485串口，須用db-9連接器連接工控機的rs-485串口與變頻器的rs-485串口，如圖2所示

廈門岳航計算機工程有限公司

聯系人：李素云

企業QQ：2851195446，2851195466

手機：18965423501

座機：0592-5165501

Chicago Water Air Single Ball Valve Assembly Deck Mount

Lot of 3 Polar Ware 600B 600ML Stainless Steel Beaker

Branson Bransonic 2510R-MT Ultra Sonic Cleaner 3/4 Gallon 40kHz 117VAC 1A

Mettler Toledo 42102811 ConModule, Connection Module for WMH Weighing Platforms

Olympus SZ-STB1 Microscope Holder, 76mm ID, 50mm Movement

Neslab EX-111 Water Bath Recirculator Ambient +3°C to 100°C ±0.01°C 7 Liters

Precision Scientific 6LM Incubator with Digital Control 120VAC 600W 5A 65°C

Thelco 6M Mechanical Convection Incubator 120VAC 1 PH 550/275W 140°F 60°C

Precision Scientific 6M Mechanical Convection Incubator 65°C 120VAC 1PH 300/600W

New Parker PAB002-40FV-TC Polypropylene Filter 0.2 Micron 40" Length Viton Seal

Koch Filter K9241212-SBM-HT Muti-Cell HT 24" X 12" X12"

Dickson TH800 Chart Recorder Battery Operated 8" Chart (203mm) Needs Calibration

New SMC XT244-351D Thermo-Con Chiller Controller 200-230VAC 16A 3PH

Camfil HEPA Filter 47-5/8" x 23-5/8" x 6"

Stulz BNU8000 Ultrasonic Humidifier with Control Panel 208VAC 12A 565W

Dickson TH800 Chart Recorder Battery Operated 8" Chart (203mm)

Cast Aluminum Metrology / Microscope Stage 26" x 18" x 29" Height Overall

Microscope Stand 10"x10" with a 37.75mm Diameter Pole 14.5"-Pole Height

Stable Micro Systems TA.XT.Plus Texture Analyzer with 50kg Load Cell + More

Spencer CD730CA-MOD Centrifugal Separator w/ Solids Can *No Filter Bag*

New Brunswick Scientific G-33 Gyrotory Shaker 16" x 16" Platform 120VAC 2A

Sartorius YCC01-0016M3 Cable

HAAKE DC3 002-4177 Immersion Circulator

Dickson TH603 Temperature / Humidity Chart Recorder w/Box of 6" Charts

TPS Blue M SPX DCC-336-C-ST350 Environmental Chamber Oven 11cuft 240VAC 40A

Dickson SC386 3" (76mm) Temperature Chart Recorder, Requires New Pen and Battery

Titan Tool and Supply Inspection Microscope 100x

Kyowa HWF20X 20x Microscope Eyepiece

Olympus NFK 3.3X LD Microscope Eyepiece

Olympus H100-012-090-HM25 Probe w/AttachmentM3575R-H33BF

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Kruss DSA10 Control Unit for Analyzer G120 Mk1 / G140-Mk1 100-240VAC 150W

Bausch & Lomb 20x Eyepiece

Envirco Filter Fan Enclosure 23.62"x23.62"x9" 110V (broken on/off switch)

New Box of 100 Sarstedt 67.754 Clear Polystyrene Cuvettes 10mm x 10mm x 48mm

New Lot of 100 Hewlett Packard 5180-4197 Clear Glass Vials, 32mm x 11mm I.D.

New Lot of 100 LoVial 60825P-1232 Autosampler Amber Vials w/Marking Spot

Box of 19 Analtech 20x20cm 2000um Pre-Coated Thin Layer Chromatography Plates

Box of 100 Acrylic Cuvettes 10 x 10 x 45mm