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）单端共点（Comcon）数字量输入方式

为了节省输入端子，单端共点输入的结构是在 PLC 内部将所有输入电路（光电耦合器）的一端连接在一起接到标示为 COM 的内部公共端子，各输入电路的另一端才接到其对应的输入端子 X0、X1、X2、....

com 共点与 N 个单端输入就可以做 N 个数字量的输入（N+1 个端子），因此我们称此结构为"单端共点"输入。用户在做外部数字量输入组件的接线时也需要同样的做法，需要将所有输入组件的一端连接在一起，叫输入组件的的外部共线；输入组件的另一端才接到 PLC 的输入端子 X0、X1、X2、....

SINK输入方式，可接 NPN 型传感器，即 X 端口与负极相连。

SRCE输入方式，可接 PNP 型传感器。即 X 端口与整机极相连。（外部输入组件可以为按钮开关、行程开关、舌簧开关、霍尔开关、接近开关、光电开关、光幕传感器、继电器触点、接触器触电等开关量的元件。）

AVERY DENNISON ALX924 RFID LABEL PRINTER AND APPLICATOR

EZ-TEK INDUSTRIES INC. RANDOM CASE SEALER BB-2/R 

PARKER HAUSER HLE 100 LINEAR DRIVE EMERSON SERVO MOTOR

CAMCO 1305RDM8H48-270 ROTARY RDM INDEXER 180VDC 60:1 

SHARP IV-S20 COMPLETE MACHINE VISION INSPECTION SYSTEM

BAILEIGH 12.5" COLD SAW CS-315 W/COOLANT PUMP 220V

ROSS SERPAR Crossflow Double Valve Size 30 P# 3573A7152

STAINLESS STEEL HOPPER 60 GALLON HEAT EXCHANGER & PUMP

CONDENSER, MICRO BREWERY, BIODIESEL, AIR DRYER, 

EMERSON MOTOR CONTROL T-60 OPERATOR INTERFACE TERMINAL

CAMCO 601RDM4H24-330 ROTARY RDM INDEXER BALDOR 90V DC

FANUC A06B-0143-B075 AC SERVO MOTOR MODEL a12/3000 

FANUC A06B-0127-B675 MODEL a6/2000 SERVO MOTOR #7000RS

ABB SIEMENS 1FK6083-6AZ21-9ZZ9-Z SERVO MOTOR 150 KG

OMRON ZFV-CA45 COLOR SENSOR W/SFV-SC150 SENSEHEAD

THERMAL DYNAMICS PAK MASTER 50 PLASMA CUTTING SYSTEM

YOKOGAWA DD SERVO ACTUATOR DR1300A60 MOTOR# 94RA0551C

MATTHEWS PRO-POINT P31 TOUCH SCREEN INTERFACE

MMC-SD-1.0-230 GIDDINGS & LEWIS CONTROL MODULE

SP1204 CONTROL TECHNIQUES UNIDRIVE

YOKOGAWA DD SERVO ACTUATOR DR1030B60 MOTOR# 94RB39830

KENSOL MARKING EQUIPMENT HEAT FOIL PRESS HEAT STAMP

FANUC A06B-0127-B677 MODEL a6/2000 SERVO MOTOR #7000

FANUC A06B-0127-B575 #7000 SERVO MOTOR a6/2000 

FANUC A06B-0127-B577 #7008 SERVO MOTOR a6/2000 REFUR.

BANNER A-GAGE EZ-ARRAY MEASURING SENSORS W/ SOFTWARE

YT213001-BC/2 FANUC AXIS DRIVE UNIT 

FANUC A06B-0127-B675 MODEL a6/2000 SERVO MOTOR #7000

GRACO FIRE BALL SERIES B09D GREASE PUMP FOR 20 GAL DRUM

FLUID AUTOMATION INC. PNEUMATIC GREASE COMPRESSOR 

GIDDINGS & LEWIS MMC 2-AXIS ANALOG UNIT W/ MMC ETHERNET

OMRON GPC03 GRAPHIC PROGRAMMING CONSOLE, W/ ACCESSORIES

HOFFMAN 2 DOOR ENCLOSURE W/ ALLEN BRADLEY 60 AMP SWITCH

11800-PR01D STAR AUTOMATION SEQUENCE BOARD 

UNITED SILICONE UNI-PRINTER UP 300 PAD PRINTER W/TOOLS

YOKOGAWA PARKER COMPUMOTOR DYNASERV SR1030B62 DD SERVO

YOKOGAWA DD SERVO ACTUATOR DR1300A60 MOTOR# 94RA0551C

FANUC A16B-2200-0842 MAIN CPU PCB BOARD

1551471 MTI-1 BRIDGEPORT INTERFACE CARD 

3169-108 EATON/LEBOW LOAD CELL 

A16B-1210-0970/04B FANUC AXIS CONTROL BOARD 

10MAIO-16 DAYTRONIC BOARD LOGIC I/O BOARD 

LG10A65PIQ BANNER PHOTOELECTRIC LASER W/CABLE MQDC-830

STANLEY VIDMAR 4 DRAWER TOOL CABINET BALL BEARING SLIDE

GE FANUC AFE TECHNOLOGIES CONTROL PANEL IC752DFT000A

YOKOGAWA COMPUMOTOR 500 INDEXER W/ CABLES & MANUALS

YOKOGAWA DARWIN DATA ACQUISITION UNIT DA100-D1-1M, S10

WEIGH-TRONIX 3275 CHECKWEIGHER DIGITAL SCALE 6 LB

FANUC VELOCITY CONTROL UNIT A06B-6050-H304

RCC48 GE CONTROLLER CARD

TAMAGAWA FA-CODER ENCODER TS5850 N60, 5K-1X-3-8-108

GE FANUC 90-30 CPU PROCESSOR MODULE PN# IC693CPU331-CD

SIEMENS MICROMASTER 440 VFD 1.50 KW 6SE6440-2UD21-5AA1

YOKOGAWA PARKER COMPUMOTOR DYNASERV SR1015B62 DD SERVO

A20B-1000-0560/02B FANUC BOARD 

YOKOGAWA DARWIN DCV/TC/RTD INPUT MODULE DU100-11 S1

060-1430-06 HONEYWELL LOAD CELL SENSOR  IN BOX

9504-50 ALLEGRO VENTILATION BLOWER

REXROTH INDRAMAT COMMUNICATIONS MODULE RMK12.2-IBS-BKL

LSS-120/208-3Y LEA INTERNATIONAL SURGE SUPPRESSION 

ALLEN BRADLEY 1756-IF8/A ANALOG INPUT CONTROL LOGIX

MOTOMAN YASKAWA MRC JANCD-MSL02 MRC CARD 

ITW VORTEC CABINET COOLER MODEL 721 VENTURI COOLER 

A16B-1210-0940 FANUC SUB MEMORY BOARD 

C500-CT001 OMRON COUNTER CONTROLLER 

C500-CT001 OMRON COUNTER CONTROLLER 

TOKIMEC ELECTRONIC CONTROLLER MODEL EC-Y-S-1A-25 

STNM-DR-040B(U) SANYO NUTRUNNER SERVO DRIVER

437D493 GE AUXILLARY MOTHER BOARD LIGHTING CONTROL

6454-5MO MEDAR FIRING BOARD 

75B49 STRUTHERS-DUNN OUTPUT MODULE  IN BOX

EATON LEBOW LOAD CELL 3397-200 W/OVERLOAD PROTECTOR 

QEL CTS-M5 TOXIC GAS TRANSMITTER/ SENSOR MONITOR 

SENSOTEC IN-LINE AMPLIFIER PART# 060-6827-02  

BANNER MINI-SCREEN MSCA-1 LIGHT CURTAIN CONTROLLER

JANCD-MRY01 YASKAWA MOTOMAN PCB MOTION CONTROL BOARD

JANCD-MCP02-1 REV C YASKAWA CNC MOVEMENT CONTROL BOARD

JANCD-MIF05 YASKAWA YASNAC PC BOARD REV. B USED

JANCD-MEW02 REV B YASKAWA PC BOARD USED 1 AVAILABLE

JANCD-MCP01 YASKAWA PC BOARD USED 

437D491 GE MOTHER BOARD LIGHTING CONTROL

TAMAGAWA SEIKI TS5858 N 5/ 5K-1X-ET5-3-9.52-0 FA-CODER 

503-17132-00 GIDDINGS & LEWIS PIC TURBO PROCESSOR 

UM840 NACHI BOARD 

MKS 0248A-01000SV GENERAL PURPOSE FLOW CONTROL VALVE 

57701-481 DURANT DIGITAL BIDIRECTIONAL COUNTER  

TOTAL CONTROL QUICKPANEL JR. DATA HIGHWAY QPJ-ABD-201

OMRON DRT2-ROS16 REMOTE TERMINAL 24 VDC 

PMI MOTION TECHNOLOGIES 0088056001 TYPE VXA 48-8-16

ELEKTRIM MOTOR 7.5 HP 460 VAC 254T FRAME 1180 RPM  

50399 ALLEN BRADLEY DRIVER BOARD 

KJ3001X1-BD1 FISHER ROSEMOUNT DI MODULE  IN BOX

FUGI ELECTRIC 250 AMP CIRCUIT BREAKER MODEL BU-KSB 600V

A16B-1210-0020 FANUC BOARD FOR RF 

ALLEN BRADLEY 1784-KTX SER. B COMMUNICATIONS INTERFACE

VORTEX 780 CABINET COOLER 

M2102501 G4B01 MERRICK LOAD CELL CONNECTION BOARD 

HELM INSTRUMENT CO. INC. 10,000 LB. LOAD CELL ILS-H10

OMRON 3G2A5-LK201-V1 HOST LINK UNIT C500 LK201 V1 

GE FANUC 90-30 ANALOG INPUT IC693ALG220F

BEI MOTION SYSTEMS ENCODER H25EF1SS100ABC7406LEDSM16S

ALLEN BRADLEY 1305-BA03A VFD 1 HP 480V 1201-HA2 HIM 

TSB151 TSUBAKI SHOCK RELAY

FUGI ELECTRIC 225 AMP CIRCUIT BREAKER MODEL BU-JSB 600V

RAYTEK INFRARED TEMPERATURE SENSOR MODEL RAYET3LTSF 

A.O. SMITH 1/4 HP COMBUSTION BLOWER MOTOR FOR AAON RTU

ALLEN BRADLEY 1734D-IB8X0W8 POINT I/O 1734DIB8X0W8 

SENSOTEC IN-LINE AMPLIFIER PART# 060-6827-06 

KJ30001X1-BC1 FISHER ROSEMOUNT DI MODULE  IN BOX

KJ3001X1-BH1 FISHER-ROSEMOUNT DO MODULE  IN BOX