ABB BAILEY INNPM12、IMASO11
PLC的输入口的内部电路多是由2个反并联的发光二极管串接一限流电阻接于公共点COM，当输入口与COM之间加一24V电压时，就会使其发光二极管导通发光，使其光敏三极管导通，即此输入点输入为1。由于PLC的输入端有多输入点，其各输入点的内部的与发光二极管串联的限流电阻的另一端接在一起，构成输入侧的公共端COM，如PLC公共点COM接24V电源的负极，则输入口应接+24V信号，如公共点COM接24V电源的正极，则输入口应接-24V信号，才会使输入口导通。见下图：
上图的PLC为S7-200，其输入侧的COM接24V电源的负极，对触点输入信号，可直接将开关的触点一端接在PLC的输入口，触点另一端接24V电源的正极，见I0.0~I0.3的连线方式。对电位式输入信号，如传感器是PNP型OC门输出式的传感器，对其供电电压E的大小无要求（5~24V都可），只要将传感器的供电源电压的正极与24V电源的正极相接，其输出端（PNP型晶体管的集电极）直接接输入口（I0.4）即可。对NPN型OC门输出式的传感器就不能按此方式连接，即对电位信号输出的传感器是有极性要求的。如果选用光耦器件进行连接，对传感器就无极性要求了（见上图右侧图）。在输入开关与PLC输入点连线无误时，将开关闭合时其对应输入点上的指示灯亮为好的如指示灯不亮说明此输入点有问题、
PLC的输出有2种形式：1、继电器触点输出，2、晶体管输出。继电器触点输出，可以把它看成开关，按正常连接负载连线即可（几个输出触点其一端连接一起，连线时要注意），晶体管输出，要考虑极性及连线要求，***好按说明书介绍连接。检查输出点的好坏，可先编一条程序，如输入点I0.0=1使输出点Q0.0=1（LDI0.0=Q0.0），PLC运行时，将I0.0的输入开关闭合，其Q0.0对应指示灯亮，说明Q0.0点完好，如不亮，说明此点可能有问题。
DECCO 9-802 COIL *USED*
DWYER 3000-0C *USED*
BIMBA 096 *USED*
LOT OF 2 CLARK 60 CY *USED*
***C VVFS3000-20A *USED*
BANNER ***W915F VALU-BEAM *USED*
MAGNECRAFT COIL:120VAC 782XBXM4L *USED*
EAGLE SIGNAL CONTROLS PCC-87 *USED*
ROYAL FAN STD12C7H *USED*
POTTER & BRUMFIELD CHB-38-70013 *USED*
SCHRADER 831 *USED*
WARNER ELECTRIC 5104-751-033 *USED*
BIMBA D-4108-A *USED*
BIMBA H-094.5-DZ *USED*
WHITE RODGERS CO. S81-125 *USED*
LOT OF 2 BANNER IAT23S *USED*
CUTLER-HAMMER 3BRSF150 *USED*
ORIENTAL SS22L *USED*
TURCK PKG 6Z-2 *USED*
P & H 479U82D4 *USED*
PEPPERL + FUCHS SAE-12 *USED*
EFECTOR IB0027 *USED*
EFECTOR KG0005 *USED*
HID 3100301 *USED*
CRYDOM CSE2410 *USED*
LOT OF 3 MICRO SWITCH BZ-RQ *USED*
SUNX NPS-C7 *USED*
DAYTON 2E477 *USED*
POTTER & BRUMFIELD CB-1011B-79 *USED*
FMC 61444061 *USED*
VICKERS 458141 *USED*
744-2 117V *USED*
LOT OF 2 BANNER MQDC-306 *USED*
SQUARE D TRANSFORMER E0-3 *USED*
TURCK Bi2-G12-RN6X *USED*
MTE 05 560 125 *USED*
BANNER BN2-2 *USED*
TURCK WK31-4M *USED*
TURCK BI5-M18-AD4X *USED*
BANNER ***A91EQD *USED*
OHMITE 0324-500 *USED*
HANNIFIN SS40005023 *USED*
ALLEN BRADLEY 800T-PT16 SER.N *USED*
SOLA 86-24-262 *NICE*
ALLEN BRADLEY 42MBS-5100 SER.B *USED*
HAYWARD BS7110060 *USED*
LOT OF 2 EPIC 10196000 *USED*
LOT OF 3 GOULD 30323R *USED*
BRAD HARRISON 804001B02M060 *USED*
***C AR30-N03-Z *USED*
BANNER MQDC-306 *USED*
LOT OF 2 BANNER PBD *USED*
BANNER PBO *USED*
SQUARE D 8501-GO-4 SER.D 120V *USED*
SQUARE D 8910-J0-3 *USED*
ASCO 238210-058D *USED*
IFM ELECTRIC OG5050 *USED*
DWYER 1991-0 *USED*
ANTUNES CONTROLS ***L *USED*
IFM ELECTRIC IE5207 *USED*
IFM ELECTRIC IF0303 *USED*
HONDA MR-I6L *USED*
TURCK NI 5 *USED*
HAPA 199-20-25-001 BLACK *USED*
FESTO KMF-1-220-5 *NICE*
PPDI PDAH (AS PICTURED) *USED*
KOM LAMB INC. 25496 *USED*
BRAD HARRISON 40948-90 *USED*
JOHNSON CONTROLS P32AC-8 *NICE*
BRAD HARRISON 106000A01F120 *USED*
NUMATICS 061SA400K VALVE *NICE*
GOULD B557 TTL *USED *
BIMBA 313-DZ *USED*
BIMBA 043-NR *USED*
BIMBA 042-D *USED*
BIMBA 020.5 *USED*
DAYTON 6X154E *USED*
OHMITE 1822 *USED*
GENERAL ELECTRIC COIL 981B160-G10 *USED*
SYSTEM SENSOR 2082 *USED*
BIMBA 043-R *USED*
IFM ELECTRIC IS0003 *USED*
BRAD HARRISON 32632 *USED*
LOT OF 2 9101-0122-006 *USED*
SYLVANIA 044017 *USED*
ASCO 64-982-1 D *USED*
FESTO JMTH-5/2-7,0-SV?I *USED*
DWYER 1823-20 *USED*
SOLA 81-24-180-01 *USED*
LOT OF 5 GORDOS (YELLOW) IAC24 *USED*
IFM ELECTRIC OG0030 *USED*
TASOKU 03 L914 *USED*
LOT OF 2 NUMATICS 139-308P *USED*
BIMBA MRS-.087-BL *USED*
WILDEN PUMP P1/SSPPP/TNU/TF?/STF *USED*
LOT OF 2 SQUARE D QO140 CIRCUIT BREAKER *USED*
BIMBA BF-041 5 *NEW OUT OF A BOX*
FANUC A06B-6066-H233 *USED*
LOT OF 5 MALLORY T***92 *USED*
6F30A3SP FUSE HOLDER *USED*
INTERMATIC WG-1603-1 *USED*
DIALCO 095-0463-09-313 MINI PANEL INDICATOR *NEW IN A F...
I*** T12-A110 *USED*
FANUC A66L-6001-0023 *USED*
PARKER PS5387 *USED*
ALFA L***AL 9611920010 *USED*
SPEEDAIRE 2Z767A *USED*
MERLIN GERIN C60N-5A *USED*
DALE RESISTOR SPR-761-1 *USED*
LOT OF 3 LEGRIS 1 / 2 (AS IS) *USED*
BODINE 24A4BEPM-D3 MOTOR *NEW IN A BOX*
FALK 50T GRID *USED*
LENOX 2 1/2" 63MM *USED*
BIMBA 012-0 *USED*
EFECTOR IG5381 IGA3008-ANKG *USED*
DART CONTROLS 123D-C DC MOTOR SPEED CONTROL 24/36VAC *U...
HOLJERON ZL.S-DK101 22W POWERED ROLLER SENSOR *USED*
GC VALVE C225F0ZA18 SOLENOIN COIL *USED*
LOT OF 2 MAGNECRAFT W389CX-8 24VDC *USED*
LOT OF 2 OHMITE L50J-1R0 *USED *
SQUARE D 8536-SB02 SERIES A SIZE 0 *AS IS *
TURCK NI4-Q12-AP6X-H1?141 *USED*
LOT OF 2 LUMBREG RKWT 4/3-632/15M *USED*
LOT OF 2 PETER PAUL ELECTRONICS 2C-14-K24 *USED*
FUJI ELECTRIC EV1274/ 2D1-20A-1K *USED*
LOT OF 2 OMRON P7S-14F-END *USED*
LOT OF 8 ALLEN BRADLEY 700-HN103 SERIES C *USED*
HUMPHREY 250E1-3-10-21-3?6 AIR VALVE *USED*
TURCK BI5-M18-AN6X-H1?141 *USED*
SQUARE D 8501-PH40E SER.B 120V *USED*
SQUARE D 8501-PH40E SER.B 110V *USED*
SQUARE D 2936-S1-C29B 208V *USED*
FACTS ENGINEERING F2-08SIM 8-POINT INPUT SIMULATOR *USE...
QUARTECH 2800-0-B OPERATOR INTERFACE PANEL *USED*
GE CR353CA2AH1 24V *USED*
ALLEN BRADLEY 871C-P5A18 SER.A *USED*
BUSS JTN60060 (2) W/ JT60060 (1) 600VAC *USED*
ALLEN BRADLEY 802MC-AX SER.D *USED*
METTLER TOLEDO AG104 PRECISION BALANCE WITH DRAFT SHIEL...
GENERAL ELECTRIC C225A120-60A118 110V *USED*
LOT OF 3 FERRAZ SHAWMUT USCC1 600V *USED*
LOT OF 2 ENDURA GAGE TALKER EN10693 & EN12308 *NICE*
POTTER & BRUMFIELD TIME DELAY RELAY CB-1024B-78 *NEW IN...
PANALARM 090-0004-3-01 POWER SUPPLY MODULE BOARD *USED*
WERMA (RED) 641 100 00 LAMP BASE W/ BULB *USED*
WOODHEAD 40400A10M020 4 PIN COUPLER *USED*
MAC VALVE TM-DDAP-1DA SOLENOID VALVE *NEW IN A BOX*
ALFA L***AL VALVE ARC *NEW OUT OF BOX*
FISHER R2502X00H52 CONTROLLER REPAIR KIT *NEW*
GE C50N *USED*
WESTINGHOUSE AN13A RELAY *USED*
PARKER 422CR011K *USED*
TELEMECANQIUE LD5-LB130 115-120V *USED*
FENWAL 17200-0 THERMOSWITCH *USED*
OMRON G9S-301 SAFETY RELAY UNIT *USED*
VEEDER-ROOT 729825-002 *USED*
CONTINENTAL INDUSTRIES, INC. SSDA-660-50-000 *USED*
CHROMALOX D2936 208/220V CONTACTOR *USED*
SY/MAX 8030-HIM-131 MODULE *NICE*
RED DOT SINGLE COVER CCSV *NEW OUT OF BOX*
SEW EURODRIVE 825723X RECTIFIER *USED*
PANALARM 50X1-120A RELAY 120V *USED*
NORGREN CS7-04 *NEW OUT OF BOX*
TELEMECANIQUE LB1-LC03M17 (AS PICTURED) *USED*
SUPERIOR ELECTRIC PROGRAMMABLE MOTION CONTROL SS2000I
ALLEN BRADLEY 802T-HP SERIES C (AS PICTURED) *USED*