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西門子PLC的分類：德國(guó)西門子可編程序控制器在我國(guó)得到廣泛應(yīng)用，如在冶金、化工、印刷生產(chǎn)線等領(lǐng)域都有應(yīng)用。西門子（SIEMENS）公司的PLC產(chǎn)品包括LOGO、S7-200、S7-1200、S7-300、S7-400等。 西門子S7系列PLC體積小、速度快、標(biāo)準(zhǔn)化，具有網(wǎng)絡(luò)通信能力，功能更強(qiáng)，可靠性高。S7系列PLC產(chǎn)品可分為微型PLC（如S7-200），小規(guī)模性能要求的PLC（如S7-300）和中、高性能要求的PLC（如S7-400）等。
西門子PLC編程的工作原理：當(dāng)PLC投入運(yùn)行后，其工作過(guò)程一般分為三個(gè)階段，即輸入采樣、用戶程序執(zhí)行和輸出刷新三個(gè)階段。完成上述三個(gè)階段稱作一個(gè)掃描周期。在整個(gè)運(yùn)行期間，PLC的CPU以一定的掃描速度重復(fù)執(zhí)行上述三個(gè)階段。
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KILLARK APPLETON 3/4" TEE CONDUIT OT-2 102798
APPLETON 3/4" SWIVEL FIXTURE HANGER COVER NIB, 3 IN BOX JBK75 102919
HOFFMAN PULL BOX ENCLS,10IN. H X 4IN. ASE10X8X4NK
WATLOW 120V 3KW 1PH ENCLOSURE BHS717J1W2 103219
RITTAL TYPE 4 STANDARD ENCLOSURE AE1031
ALLEN BRADLEY BULL 512 COMBINATION STARTER SIZE1 TYPE12 512-BJB-6-24
GENERAL ELECTRIC 100A 600V CIRCUIT BREAKER TE100F / TE100S 103914
ALLEN BRADLEY FULL VOLTAGE REVERSING STARTER BULLETTIN 705 SIZE 2 104963
ALLEN BRADLEY ENCLOSURE BOX 3." X 2.75" 103445
COOPER CROUSE-HINDS EXPLOSION PROOF BREAKER PANEL D2LCS324*24120 GB I LID, NEW
SQUARE D 30 AMP 600VAC SER E1 ENCLOSURE SWITCH H361 99514
CROUSE-HINDS 1" CONDUIT COVER E30640 102204
HOFFMAN NEMA TYPE 3R ENCLOSURE A12R126 102444
I-T-E SIEMENS 60 AMPS SER A TYPE 4/4X ENCLOSED SWITCHED NF352SS 103600
BROOKS DIFFERENTIAL INDUCTANCE CONVERTER 4023-1B1A1 104888
CARLON 14 GAUGE STEEL WHITE BACK PANEL JP1614 103028
APPLETON CONDUIT COVER NIB, 50 IN BOX 370 103665
HOFFMAN WALL-MOUNT TYPE 4/12 CONCEPT STYLE ENCLOSURE CSD302410 100708
DREXELBROOK HOUSING TRANSMITTER REPLACMENT 105358
SIEMENS INDUSTRIAL DUTY SWITCH 60 AMP 3 PHASE 600V 99392
SAGINAW CONTROL ENCLOSURE N12 SCE-201608LP 101103
MMTC INDUSTRIAL CONTROL ENCLOSURE PANEL 103144
HOFFMAN INDUSTRIAL CONTROL PANEL ENCLOSURE A6044CH
ITE SIEMENS 3 PHASE 600VAC ENCLOSURE BD SWITCH PLUG BOSI4351 99527
ALLEN BRADLEY ENCLOSURE SWITCH 4.50" 3.0" 103123
GOULD UNITIZED COMBINATION STARTER W. DISCONNECT SWITCH CLASS A831 105540
GOULD I-T-E BD BUSTRIBUTION BUS DUCT SYSTEMS BDEH3100
CARLON UL ENVIRONMENTAL ENCLOSURE CJ12106 104174
COOPER B-LINE TYPE 12 ENCLOSURE 884-12CHC 104622
HOFFMAN ENCLOSURE - SEALED A-202010LP 101654
KILLARK VLJX VOL-25CU./IN/ CONDUIT OUTLET BODY 3827 SC 102206
GENERAL SIGNAL GS CLASS 651 HAZARDOUS LOCATION ENCLOSURE C0F8106-N-H 102888
THOMPSON EQUIPMENT TECO MICROPROCESSOR CONSISTENCY TRANSMITTER C-6000A 102689
INVENTRON PROGRAMMABLE CONTROL SYSTEM 9140 102686
AMETEK DREXELBROOK ENCLOSURE 367925 / RJ1210HLL 102478
FANUC ROBOTICS 4-1/2IN x3INx2IN BATTERY BOX
FANUC ROBOTICS S420i POWER CABLE A660-2004-T205 *NEW*
BUSSMANN MINI FUSES AGC-10 *NEW, LOT OF 4 BOXES*
FANUC LTD RUBBER STOPPERS A290-7031-X365 *NEW LOT OF 3*
FANUC 6" BATTERY COVER
FANUC COVER A290-7313-X542 *LOT OF 2 NEW*
FANUC TOSHIBA TRANSISTOR MG30G1BL2 *LOT OF 3*
FANUC EE 3285 103 001 4 PIN FEMALE SERVO MOTOR CABLE, NEW
FANUC ROBOTICS CABLE ASSEMBLY EE-3505-599-001 *NEW, LOT OF 2*
FANUC ROBOTICS CABLE ASSEMBLY SET A05B-2350-J011-?K1 *NEW*
APPLETON 1/2" MNPT 3"OAL TMC CONNECTOR FOR JACKETED METAL CLAD CABLE TMC050
FANUC SER.B LTD 6 AXIS SERVO AMPLIFIER A06B-6076-H101
FAUNC 1/4"NPT REGULATOR RG0005 *NEW*
FANUC PROCESSOR MAIN CPU PCB A16B-3200-0040/?06D W/ DAUGHTER BOARDS
FANUC ROBOTICS WIDE MINI 2 CHANNEL DN3 MODULE EE-5770-010-002 *NEW*
FANUC DE-2044-905 S-500 AUX BATT/PWR C5B1 CABLE, NEW
FANUC ROBOT AC SERVO MOTOR a6/3000 A06B-0128-B175
FANUC ROBOTICS CABLE ASSEMBLY A660-8006-T868 *NEW*
FANUC ROBOTICS 7m CABLE ASSEMBLY A660-2003-T529 *NEW*
FANUC Robotics SYSTEM R-J2 Controller Parts Manual, NEW
FANUC ROBOTICS C3M1 CABLE ASSEMBLY EE-0833-325-001
FANUC ROBOTICS BRAKE RELEASECABLE W/ HARTING M1 CONNECTOR EE-3285-420-001 *NEW*
FANUC ROBOTICS 0.55m CABLE ASSEMBLY A660-4003-T429 *NEW*
GENERAL ELECTRIC TYPE SB-1 CONTROL & TRANSFER SWITCH 16SB1CA19X2 *NEW NO BOX*
FANUC ROBOTICS 24VDC OUTPUT MODULE AOD08C A03B-0807-C151 *MISSING DOOR*
FANUC CONVERSATIONAL AUTOMATIC PROGRAMMING FUNCTION I FOR LATHE GFZ-61804E-1/03
FANUC AUTOMATION TRAINING SERVICES CLASS NOTES MANUAL GFS-271C *NEW*
TOSHIBA FANUC 50A IGBT TRANSISTOR A50L-1-0230
FANUC A660-8004-T930 FAN CABLE NEW
INTERCON FANUC CABLE ASSEMBLY CF3A-2MPB-0100-?AAB *NEW*
FANUC GEAR A290-7205-X521 *NEW*
FANUC ROBOTICS 1-0S AC SERVO MOTOR A06B-0312-B351-?R
FANUC SERIES 15 MODEL B FOR LATHE OPERATION MANUAL GFZ-62554E-1/01 *NEW, UNBOUND
FANUC DAUGHTER BOARD A20B-2902-0550/?01A *LOT OF 2*
FANUC OPERATORS PANELS FOR i SERIES CONTROLS USERS MANUAL GFK-1478C
GE FANUC PC BOARD A20B-0009-0150/?09B
DWYER 3/4"NPT 1/2"NPT 3WIRE FLOTECT EXPLOSION PROOF FLOW SWITCH V6EPPBS2BGM2
FANUC ROBOTICS C3M2 CABLE ASSEMBLY EE-0989-317-001 REV C
ABB ROBOTICS I/O CPU CARD DSQC 532A / 3HAC18158-1
FANUC ROBOTICS SET OF 2 ROBOT BALANCERS A290-7302-V306
FANUC ROBOTICS DAUGHTER BOARD A20B-2902-0531/?01A *NEW*
FANUC PC BOARD A20B-1001-0711/?02A
FANUC A660-8006-T954#?L14R53 S-420 RH UM CABLE, NEW
FANUC * PULSE GENERATOR * A860-0201-T001
FANUC A660-2005-T867 14 M CABLE ASSEMBLY, NEW
FANUC ROBOTICS OPERATORS MANUAL (VOLUME 2 OF 2) B-63534EN/02
FANUC GEAR ASSEMBLY A290-7313-V524 *NEW*
FANUC A660-8011-T162 2-P MALE CABLE ASSEMBLY, NEW
FANUC A660-8011-T162 2-P MALE CABLE ASSEMBLY, NEW
FANUC A660-8008-T992 2-P MALE CABLE ASSEMBLY, NEW
FANUC ROBOTICS 20 METER RM2 STD B-CAB CABLE A660-2004-T724#?L20R33 *NEW*
FANUC SERIES 16 AND SERIES 18 MAINTENANCE MANUAL VOL. 1 & 2 GFZ-61805E/04 *NEW*
FANUC ROBOTICS 20S AC SERVO MOTOR A06B-0502-B755, PLASTIC DAMAGE
FANUC ROBOTICS AC SERVO MOTOR a12/3000 A06B-0143-B175 #0008
FANUC MODEL 20S 3PH 8-POLE 20A AC SERVO MOTOR A06B-0502-B755
FANUC MODEL A CONNECTION MANUAL (FUNCTION) VOL. 2 GFZ-63003EN-1/0?2
FANUC A660-4003-T241 SYSTEM RJ3 K102 J56 AXES PULCO CABLE, NEW
FANUC ROBOTICS 7m DeviceNet SIGNAL CABLE A66L-0001-0429/?L8A503 *NEW*
FANUC EE-0833-329-001 5-P FEMALE CABLE, NNB
FANUC ROBOTICS I/O BASE UNIT A03B-0801-C008 *NEW*
FANUC PC CONTROL BOARD A20B-2902-007
FANUC ROBOTICS 3KW ALPHA SERIES a22/1500 AC SERVO MOTOR A06B-0146-B675
FANUC ROBOTICS RJ3 PAINT CONTROL 7+3 BRAKE HARNESS EE-3505-586-001
FANUC ROBOTICS DAUGHTER BOARD A20B-2902-0070/?06D
ANALOGIC MEASUROMETER II 110VAC DIGITAL PANEL METER AN25M00-E-P-1-X?X-10-X
FANUC A20B-1002-0980 / 03B CONTROL CARD, NEW
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