若在输入触点电路串联二极管，在串联二极管上的电压应小于4V。若使用带发光二极管的舌簧开关时，串联二极管的数目不能超过两只。
系统程序是由PLC的制造厂家编写的，和PLC的硬件组成有关，完成系统诊断、命令解释、功能子程序调用管理、逻辑运算、通信及各种参数设定等功能，提供PLC运行的平台。系统程序关系到PLC的性能，而且在PLC使用过程中不会变动，所以是由制造厂家直接固化在只读存储器ROM、PROM或EPROM中，用户不能访问和修改。
0490603 0-49060-3
GX06B BN624A386H02
USAREM-03AE2K
这个目的不能独立地达到，因为实际问题确实访碍某些理想操作的发生。要记住的是，观察一个问题的方法不止一种，这个非常短小精悍的擦黑板程序就是其中一种方法。
可编程控制器以体积小功能强大所著称，它不但可以很容易地完成顺序逻辑、运动控制、定时控制、计数控制、数字运算、数据处理等功能，而且可以通过输入输出接口建立与各类生产机械数字量和模拟量的联系，从而实现生产过程的自动控制。特别是现在，由于信息、网络时代的到来，扩展了PLC的功能，使它具有很强的联网通讯能力，从而更广泛地应用于众多行业。
Honeywell Satellite XT FTT Gasmess-ger?t-transmitter Gassensor Steuereinheit
CUTLER-HAMMER E2K3400TMW Trip unit 400AMP 1250-2500 Trip-
Siemens 6ES7 138 4FA04 0AB0 Simatic Dp,Modulo Elettronica 6ES7138 4FA04 0AB0 FS
EXMARK/ TORO GENUINE PARTS CABLE PART # 84-9120
Rosemount Analytical SCL-R-401-M2 Solu Comp Resistivity Analyzer 120VDC
NAMCO PHOTO SWITCH EP230-24400 NEW EP23024400
1 pc. GM OEM 88984528 Transfer Case-Actuator Shift Motor,
Ifm E40096 Adattatore Avvitato per Prozesssensoren, SI1/G1/2/ VA, M18 x 1.5
L-Com- HG72710LP-NF - 698 MHz - 2.5 GHz 11 dBi Log Periodic YAGA Antenna GSM
SIEMENS 6ES7 467-5GJ02-0AB0 SIMATIC PROFIBUS INTERFACE MODULE 6ES7467-5GJ02-0AB0
ECHO / SHINDAIWA GENUINE PARTS BLADE PART # X411000710
Mettler Toledo B303-S College-S Balance, 310g Max, 100mm Pan, RS232C, 8-14.5VAC
SHARP JW-6BU USED 6 SLOT BASE RACK PANEL JW6BU
Boston Gear FC-20 1 Shaft Coupler Body,
rofin Sinar pcld 5-94.138/0 SCHEDE, OPTO SCHEDE 5-94.139/0, PIAO Card, laser
KILLARK GO1-RX1C-N34 SHORT SINGLE MOMENTARY CONTACT PUSHBUTTON (RED)
age Isolation Transformer E000-22070 - Surplus!
INVENSYS VALVE ASSY 1 1/4" FULL PORT,2 WAY,SYSTEM UP CLOSED, 20 VC, SS/TRIM TFLN
Phoenix Contact 2736686 Power Supply, Input: 100-240VAC, Output: 30VDC 2.4A
ROCKWELL AUTOMATION 193191-A02 REV. 06 USED CIRCUIT BOARD 193191A02
BOX OF 15 JIANGHAI CAPACITOR CO. CD139 NEW CAPACITORS 80V 47000UF CD139
IFM oa0102 einweglichtschranke barrière lumise oae-fkoa reichw. 50 M F
Aesculap BV101R Wundspreizer, Weitlaner 3x4Z, 4190421 Spreizer 130mm scharf
Durametallic 1.6875″ Seal 696-276-5203 - Surplus!
BABCOCK TWO PIECE CLUTCH DISK 1 3/4" PART # SB175
SMC LXSH2SB-150SB High Rigidity Slide Table 2Phase Stepper Motor 150mm
LOT OF 12 COOPER BUSSMANN BUSS FUSETRON FUSES FRS-R-6-1/4 USED FRSR614
ARROW TRYREN ST-30P USED POWER AMPLIFIER ST30P
KEYENCE LV-H300 Beam Sensor laseroptischer Sensor Transmitter Receiver NIP
HUBBELL SHC1028 CORD CONNECTOR, ALUMINUM N.P.T. HUB SIZE 1/2"
Siemens 6SL3130-7TE21-6AA1 Sinamics Active Line Module 6sl3 130-7te21-6aa1, V: A
Del-Tron RD-3 Crossed Roller Slide, Travel: 2", Load Capacity: 66 lbs
New Watlow SPT1J8A1 ThinCast Aluminum Heater 120V 450W 8" x 1.5" x 0.5"
YASKAWA JUSP-ACPCA35JAA USED/PARTS CIRCUIT BOARD DF9303073-A2 JUSPACPCA35JAA
CONZERV EM 6434 USED DIGITAN SERIES LOAD MANAGER EM6434
Hamamatsu M4253 CCD CAMERA CONTROLLER Camera Control Unit 0,25 A/180- 240 V
CUTLER HAMMER HKD3400 3P 400A 600V CIRCUIT BREAKER - /FREE SHIP
Siemens 6av3505-1fb12 COROS pupitre opérateur op5-a2,6AV3 505-1fb12,E12 / E11
Caterpillar Genuine Parts Seal Part # 7W3200
Lot of 78 New Allen Bradley 1492-H1 Terminal Blocks, Rating: 30A 600VAC/DC
YASKAWA B7BCE-15 (A) (REV 4) NEW 15' SERVO CABLE B7BCE15
BOX OF 6 OMRON MY4 NEW PLUG-IN RELAYS 110/120 VAC MY4
Bosch DM 4K 1101-D Servo Drive Modul DM 4K1101-D, PM SMA/000/0.52-D
StarTech 10 Gigabit Fiber SFP+ Transceiver Module - Cisco SFP-10G-SR Compatible
Liebert Control Board 4C12151G
IO Analytical 1030 TC/10 Total Organic Carbon Analyzer Controller Board 115/230V
New SMC T-MGQL32-65 Pneumatic Compact Cylinder 65mm
SIEMENS 5SX22 NEW-NO BOX CIRCUIT BREAKER C1 5SX22
Square D QOU215-5283 Circuit Breaker, 2 Pole, 15 Amp, w/ Ring Terminal Lugs,
Keyence PS-55,PS-55T,PS-55R Infrarossi Led Luce Armadio Ultrakleiner Sensore
APPLETON TMCX100A 1" ALUMINUM METAL CLAD MC CABLE CONNECTOR - NIB old putty
TRD Manufacturing Double Air Cylinder 102951-1 (CYL-2199643)
STANDARD GENUINE PARTS SWITCH PART # TS-171
Marshall Nelson K43012U-01A-34 Temperature Probe 12" Probe / Thermocouple 3/4"
MOORE APACS IDM 39IDM115ACCAN 16107-101/01 USED 39IDM115ACCAN 1610710101
1 pc Airpax Circuit Breaker, IEGS66-28289-2-V , 30A, 80V, 2P,
Meto-Fer Ve 52 Vertikaleinheit Guida Lineare per Meccanica Pinze 0-50 Mm
APPLETON ELECTRIC TMC30430 3" Aluminum Through Bulkhead Mc Cable Connector
Smc ITV2030-31T2CL-Q Regulator Input 0 - 10 5v, Output 0.005 - 0.5 Mpa
Horner APG HE599DIM510A SmartRail 24VDC Input Module, Number of Inputs: 8
Lot of 2 SDC PSB560 Pressure Sense Bars, Power: 12/24VDC, Width: 36"
KEYENCE SL-C48H-T / SL-C48H-R USED SAFETY LIGHT CURTAIN TRANSMITTER / RECEIVER
ALLEN BRADLEY AAH18925 BOARD
Andover Corperation Ottica Filtro 030fc36-25/607.5nm AM-29901 Passa-Banda Filtro
SCHNEIDER MX-XF/SHT-SHC SHUNT TRIP OR CLOSE COIL 24 VAC-24/30 VDC
Chesterton Tungsten Stationary Seat 46817 - Surplus!
Compumotor AXL-DRIVE Microstep Drive w/ A/AX83-93 Motor 95-132VAC *See Details*
Parker HN1S-6QUA 1/4 NPT Coalescing HSG W/ Autodrain, PRESS 250 PSIG, TEMP 175F
SCHRADER VALVE 3456 S 31500-8110 USED 3456S 315008110
Kentek ACR-ALX Alexandrite Acrylic Laser Viewing Safety WINOOW 14.5" x 17.5"
BALLUFF BOS 35k-ps-1pd-s4-c opto-electrónicos Sensor bos003a ,SN 400 mm
Philips Color Kinetics eW Graze Powercore LED Light 48" 4ft, 523-000030-03
Sick wtb4s-3p2161 diffuser les détecteurs photoélectriques 1042040
STANDARD GENUINE PARTS SWITCH PART # TS-90
Timken L217849 & L217813 Tapered Roller Bearing Race Cup Cone Set 5" OD, 3.5" ID
GE CR7ZB 10 USED CONTACTOR WITH CR7G1XN OVERLOAD RELAY CR7ZB10
1 pc Airpax Circuit Protector, IEGF66-29481-2-V,
ENDRESS HAUSER CERABAR M, pmp45-fe17pbj1dbf E+H PRESSURE TRANSMITTER PRESSURE
ABB OHB95L10 PISTOL HANDLE 95MM UL TYPE 4,4X (BLACK) -
SIEMENS BVP 261978 kabelraum adatto a endeinspeisung 1000 A, bd2-1000-kr
Hammond 2S16166 Stainless Steel Electrical Control Panel Enclosure 16"x 16"x 6"
Stainless Steel Braided Hose, 20' Long, 5/16" OD, 5/32" ID, 1/4 NPT to 7/16 NPSM
TELEMECANIQUE XCK-J5970H7 NEW LIMIT SWITCH XCKJ5970H7
ALLEN BRADLEY 150-A54NB-ND SER. A USED SMC-2 SMART MOTOR CONTROLLER 150A54NBND
Roof Boxer V8 Star, Flip up Helmet, Motorcycle Black - Red, SIZE L,
ABB T5NQ400TW Circuit Breaker 400Amp,3-Pole, 600V W/Assembled Acess.
SIEMENS 6ES7 322-8bh01-0ab0 SIMATIC S7 USCITA DIGITALE 6es7322-8bh01-0ab0 E:01
ESC Manufacturing 01-101-0 FSM Interface PCBA Rev E
Misumi ZSG50 Z-Axis Spring-Loaded Stage 20mm Travel 50mm x 50mm 49N w/ Lock Nut
LOT OF 3 ALLEN BRADLEY 1202C03 NEW COMMUNICATIONS CABLE 1202-C03
1 pc. Kwikset Titan 744CA-26D Circa Classroom Lock, 2-3/8" Latch,
Lenze 8200 Vector E82EV751K4C Convertidor de Frecuencia 400V,0.75 Kw Nuevo +
10x Sch?fer SSI Regalkasten Regalbox Sichtlagerbeh?lter 480x180x120 Lagerbox Box
Beta Products C7000 Microprocessor 53-06595
BENDIX GENUINE PARTS REMANUFACTURED R-14 VALVE ASSY WITH BRACKET PART# OR103010X
Zebra Z140-201 Xi Industrial Label Printer Parallel Interface 120VAC 5A
STANCOR RT-206 NEW SELENIUM RECTIFIER TYPE POWER TRANSFORMER RT206
CUTLER HAMMER E54WAK18AT12SB1 SER. B1 NEW SENSOR