5SDA24F1703
PLC是專為工業(yè)控制而開(kāi)發(fā)的裝置,其主要使用者是工廠廣大電氣技術(shù)人員,為了適應(yīng)他們的傳統(tǒng)習(xí)慣和掌握能力,通常PLC不采用微機(jī)的編程語(yǔ)言,而常常采用面向控制過(guò)程、面向問(wèn)題的“自然語(yǔ)言”編程。電工委員會(huì)(IEC)1994年5月公布的IEC1131-3(可編程控制器語(yǔ)言標(biāo)準(zhǔn))詳細(xì)地說(shuō)明了句法、語(yǔ)義和下述5種編程語(yǔ)言:功能表圖(sequential function chart)、梯形圖(Ladder diagram)、功能塊圖(Function black diagram)、指令表(Instruction list)、結(jié)構(gòu)文本(structured text)。梯形圖和功能塊圖為圖形語(yǔ)言,指令表和結(jié)構(gòu)文本為文字語(yǔ)言,功能表圖是一種結(jié)構(gòu)塊控制流程圖。
梯形圖是使用得zui多的圖形編程語(yǔ)言,被稱為PLC的*編程語(yǔ)言。梯形圖與電器控制系統(tǒng)的電路圖很相似,具有直觀易懂的優(yōu)點(diǎn),很容易被工廠電氣人員掌握,特別適用于開(kāi)關(guān)量邏輯控制。梯形圖常被稱為電路或程序,梯形圖的設(shè)計(jì)稱為編程。
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UHLMANN 2DS100.60-1 CAM ENCODER MODULE
UHLMANN 2PS740.9 POWER SUPPLY MODULE 110/220V 100W
UMI 1C-DH DUPLEX/ COMBO COVER-HORIZINTAL *ORIGINAL PACKAGE*
UNI-CHAINS 30LF820K400 10FT. CHAIN FLAT TABLE TOP
UNICO 319-663
UNICOM ETP-20048T SUPERSLIM TRANSCEIVER 10 BASE-2/5
UNICOM ETP-20048T SUPERSLIM TRANSCEIVER 10 BASE-2/5
UNIOP ECT-16-0042 DISPLAY
UNISOURCE 470S-1280 STROBE LITGHT AMBER
UNITED ELECTRIC 3-100PSI PRESSURE SWITCH H100-702
UNITED ELECTRIC B5-108 TEMPERATURE CONTROL
UNITED ELECTRIC CONTROLS E55A-E21BS
UNITED SCIENCE 601-4000-01
UNITRONICS V350-35-TR34 DIGITAL INPUT
UNIVERSAL ASB80GM-10-200V.9-3NR-55D FLOW MONITIOR
UNIVERSAL ELECTRIC VZ1U051
UNIVERSAL S1000ML5AC5M AUTOTRANSFORMER
UPKEEPER CORP. 110V ARMATURE 08-00-005-01
URAKAWA POWER SUPPLY URSS-158E
URB NJ421MC5 ROLLER BEARING
US FILTER FCROF3025 832 FILTERS
US MOTORS 1-055-331-00-003 W/F052A W/5586/X05F
US MOTORS EMERSON G72255 ELECTRICAL MOTOR 75 HP 1780 RPM
US MOTORS H302A-50-X05X095R061M MOTOR
US ROBOTICS 1.012.0265-E PC BOARD
US ROBOTICS 1.012.0265-E PC BOARD
US ROBOTICS CJE-0375 MODEM
USG 168536 GAUGE
USTC 913A *USED *
UTICOR 100G-1M1R4 PANEL VIEW *NICE*
UTICOR ACCAT240 12" PANEL COMPUTER
VACON DRIVE SE2C40050D02
VACON IP66 VACONX4C40150C AC DRIVE TYPE 4X 15 HP 460 V
VACON NSX00882A2H0SSSA1A2000000 AC DRIVE
VACON VACONX4C40100C DRIVE
VACON VACONX4C50020C AC DRIVE
VACON X4C40100C TYPE 4X DRIVE
VACON X4C40150C VARIABLE FREQUENCY DRIVE
VAISALA HMP233 HUMIDITY AND TEMPERATURE TRANSMITTER
VAISALA HMT330 HUMIDITY & TEMPERATURE TRANSMITTER (HMT335)
VAISALA HMT330 HUMIDITY AND TEMPERATURE TRANSMITTER
VAISALA HMT331 HUMIDITY & TEMPERATURE TRANSMITTER
VAISALA HMW60U PC BPARD
VAISALA TRANSMITTER HMT 363 A12BCE1A4BB1A1A4
VALCON V150CIKN115AC
VALMET 9825 24609
VALTEK 167981.999.000 POSITIONER
VALTEK 167981999000 POSITIONER
VALTEK WCB-316 VALVE
VALUE GUARD SEAL VG-805
VALUE-BEAM SM312F
VALVCON VW150CS2N115AC
VAN AIR SG23 DISPOSABLE CARTRIDGE COMPATIBLE FOR MINI CARTRIDGE
VAN DORN 330038 OUTPUT BOARD
VARIAN 661571 VALVE CONTROL
VAT 10844-CE44-ASG1 GATE VALVE
VAT 10844-CE44-ASG1 GATE VALVE
VAT 10844-CE44-ASG1/0071 A-685068 PNEUMATIC ACTUATOR
VAT 10844-CE44-ASG1/0084 A-692258 PNEUMATIC ACTUATOR
VAT 10844-CE44-ASG1/0109 A-712605 PNEUMATIC ACTUATOR
VAT 10844-CE44-ASG1/0110 A-712960 PNEUMATIC ACTUATOR
5SDA24F1703
VAT 10844-CE44-ASG1/0110 A-712960 PNEUMATIC ACTUATOR
VAT 10844-CE44-ASG1/0113 A-712960 PNEUMATIC ACTUATOR
VAT 10844-CE44-ASG1/0120 A-745678 PNEUMATIC ACTUATOR
VAT 10844-CE44-ASG1/0125 A-745678 PNEUMATIC ACTUATOR
VAT 10844-CE44-ASG1/0132 A-801911 PNEUMATIC ACTUATOR
VAT 10844-CE44-ASG1/0137 A-801911 PNEUMATIC ACTUATOR
VAT 10844-CE44-ASG1/0139 A-801911 PNEUMATIC ACTUATOR
VAT 641PM-16BC-0002 PRESSURE CONTROLLER
VECTROL 9032-120E *NICE*
VED20020CA-8
VEE INDUSTRIES WPS-1
VEE-ARC RIVB-3HP ADJUSTABLE SPEED MOTOR CONTROL
VEE-ARC SUPER 7000 931-1016 FREQUENCY DRIVE
VEE-ARC SUPER 7000 931-1017 FREQUENCY DRIVE
VEE-ARC SUPER 7000 931-1017 FREQUENCY DRIVE
VEE-ARC SUPER 7000 SCF402X3M9XXX1 CONTROLLER
VEE-ARC SUPER 7000 SCF402X3M9XXX1 MOTOR CONTROLLER
VEE-ARC SUPER 7000 SVF402X3M9XXX1 FREQUENCY DRIVE
VEECO INSTRUEMENTS INC 16001-1 BOARD XRF-4X00/5X00
VEEDER-ROOT 109888-0001 MOTION DETECTOR
VEEDER-ROOT 727215001 SMALL MECHANICAL, RATHET
VEGA SENSOE VEGAFLEX61 FX61.XXCGB1HKMAX (AS PICTURED)
VEGA VEGABAR 52 BR52.UXBB1SHKNXM PRESSURE TRANSMITTER
VEGA VEGABAR 52 BR52.UXGF1VHKNXM PRESSURE TRANSMITTER
VEGA VEGABAR 52 BR52.XXGFISHANAS PRESSURE TRANSMITTER
VEGA VEGAFLEX 61 SENSOR FX61.XXCFA1HKMXX
VEGA VEGAFLEX61 LEVEL SENSOR FX61.XXCGB1HKMXX
VEGA VEGAPULS 67 SENSOR PS67.UXBXCHKNXX
VELAN 1682-818-XXX TOOL VALVE TUBE
VELAN CWP 275 PSIG CF8M w/ BETTIS CB520-5R60 ACTUATOR
VELAN ENG 1596-510D062-S VALVE GLOBE
VELAN W-2034B-03TY
VERSA BIK-3209-P 3-WAY VALVE
VERSA C5M-4300-4 SUBPLATE ASSEMBLY
VERSA ESM-3301-46-M-N-14-120V60
VERSA PRODUCTS VSG-35-21-1431-120V60 *NEW OUT OF THE BOX*
VERSA VSG-3521-316-TA45E-XX-120V60 THREE WAY VALVE *FACTORY SEALED*
VEXTA STEP UNIT UPK564BW-H50
VEXTA STEPPING MOTOR & DRIVE UPD596H-NBA
VEXTA STEPPING MOTOR & DRIVE UPD59913H-A *NICE*
VEXTA STEPPING MOTOR PXB44H-02BA
VEXTA UDX 2140A 2-PHASE DRIVE w/ PH266-01GK STEP MOTOR
VGA CABLE
VIATRAN PRESSURE TRANSDUCER 3745CBD *ORIGINAL PACKAGE*
VIBCO 2PCD-200-1 HEAVY DUTY ELECTRIC VIBRATOR
VIBCO P42000
VICKERS 02 341950
VICKERS 02-101731
VICKERS 02-175463 REV.03 VALVE
VICKERS 02-341896
VICKERS 02-341961
VICKERS 0633741 SOLENOID COIL 115/120 VAC (BLACK)
VICKERS 0F3-12-10
VICKERS 426508 FLOW CONTROL VALVE