846935-rc 415710-13a
mla3097a
ps-t6la-t6la-33
1di200z140
1.最大限度地满足被控对象的控制要求
plc经过这五个阶段的工作过程，称为一个扫描周期。完成一个周期后，又重新执行上述过程，扫描周而复始地进行。扫描周期是plc的重要指标之一，在不考虑第二个因素（与编程器等通信）时，扫描周期t为：
1.最大限度地满足被控对象的控制要求
按下停止键后，所有的输出均匀为off，停止操作。
1968年，通用公司需要开发一种能够替代硬接线继电器的设备，于是plc就应运而生。自诞生以来，plc一直使用梯形图逻辑进行编程。plc可以轻松的控制使用数字和模拟量设备的过程，但是如果要去控制那些更复杂的、本质上是顺序控制的过程，使用plc比使用basic、c或c#语言实现要困难的多。经过多年的演化，plc已经可以使用basic或c语言进行编程，但是在大多数情况下，仍然依赖于梯形图（是iec61131-3规定的编程语言的一种）。
在选型的时候，因为各种plc都有大型、中型、小型的分别，这些分别主要是由cpu模块的性能不同造成的。在实际上，的并非一定大型的功能就是合适的。除了价格方面的考量之外，主要是，如果控制点数不多，小型的cpu模块完全可以胜任，则小型的cpu反而比大型的cpu模块工作还要可靠一些。因为，小型的cpu所涉及的资源少，。而大型cpu的资源多，在程序执行中，为处理那些程序不需用到的资源时，也要分配时间去处理，这样不仅造成资源的浪费，可能在程序处理上不及小型cpu可以更单纯和稳定地工作。
可编程序控制器采用模块化的结构，方便了使用和维护。智能i/o模块主要有模拟量i/o、高速计数输人、中断输入、机械运动控制、热电偶输入、热电阻输入、条形码阅读器、多路bcd码输人/输出、模糊控制器、pid回路控制、通信等模块。智能i/o模块本身就是一个小的微型计算机系统，有很强的信息处理能力和控制功能，有的模块甚至可以自成系统，单独工作。它们可以完成可编程序控制器的主cpu难以兼顾的功能，简化了某些控制领域的系统设计和编程，提高了可编程序控制器的适应性和可靠性
hirschmann bat300-rail inet punto di accesso wireless 300 mbps sicurezza router
murphy rp2308b push/pull dc solenoid 24 vdc (p/n: 40700093)
fein 8000 haute fréquence tournevis 300 hz, hf-schrauber, 81207 270w, 200v f
telemecanique xsa-h0231 inductive proximity switch nip 34290 sensor
haskel seal kit acv part # 52924
parker 71-016945-03 rev f compumotor cable 50-pin d-sub to 50-pin scsi, 36 long
murr 7000-88261-2200100 cavo collegamento m8 3 x 0,25 grigio 1,0 m cavo
pall hc0290fsu5h filterelement, filtereinsatz, filter, in ovp
cymbet cbc-eval-05 enerchip cc with integrated battery management evaluation kit
square d q232225h molded case circuit breaker 225amp 3-pole 240 vac -
siemens 3rk1304-5ls40-2aa3 starterkombi f.direktanlauf et200pro avec frein f
square d 3-pole, 60 amp, 480v circuit breaker
omega control unit display he-xl103bc-40
siemens simatic s5, 6es5 756-0aa11 fbg rangierkarte 6es5756-0aa11 e-stand 2
akron screw base 4 1/2 part # 350-4 1/2 new old stock
xmark genuine parts hose part # 2700160
advanced motion controls b12a6l-sy2 analog servo drive 20-60vdc 12a peak
lot of 12 smc sv2100-5fu solenoid valves 2-postttion 5-port pressure: 0.15-0.7mpa
national instruments pci-1405 single channel image acquisition card, 400x400 res
new gemco 2006-404l30a rotary limit switch 600vac 30:1 ratio 5/16 shaft 1 npt
smc nzx1101-k35mz-e55cl vacuum ejector 24vdc no supply nc breaking 1.0mm nozzle
siemens 6es7 326-2bf01-0ab0 new-no box simatic s7 module 6es73262bf010ab0
ecd ovonics 25mw1-777-000mfgcmp new pvcd chamber electronics 25mw1777000mfgcmp
euchner n1ar502le060 new in box 047819
fanuc a16b-2200-0020/07c used a16b22000020
harting 7310335160000 new heavy duty connector / receptacle 7310335160000
acopian b8g200 new regulated power supply b8g200
allen bradley 440p-crpb03e ser. a new guardmaster limit switch 440pcrpb03e
leeds fiber optic ring light, ring id: 49mm, length: 3ft, bundle: 9mm
ixs walk&ride stivali moto, racing- stivali, pelle, nero, rosso, misura 41
chemineer kenics 1,5 -kmr-san-6 static mixer statico mixer
kissling 65-b12-108 d 45 reihengrenztaster 130702 multi-limit switch ovp
846935-rc 415710-13a
red lion controls dp5 1/8 din analog input panel meter dp5d0000
abb oetl-nf175 non-fusible disconnector switch 1sca022555r9010
siemens 6es7 193-6bp00-0da0 simatic et 200sp,base-unit,6es7193-6bp00-0da0 nuevo
moyno c32-0gq 23.25″ steel progressive cavity pump stator - surplus!
siemens 6es7132 4fb01 0ab0 modulo elettronica x et 200s,6es7 132 4fb01 0ab0
square d ac power factor eaipu
eaton e04nb18x3n contactor, 3-pole, coil: 24vdc, contacts rating: 600v 18a
dixon andrews 4 connector 400c used
eaton opcon 8880b-6502 photoelectric control module with 1280a sensor head
parker etb80-b01la6x-fr750-al17 guided ball screw 750mm stroke 1 lead
stahlin ds1816cvr 18 x 16 fiberglass diamond shield cover with holes
new fastest fe001-0050 pneumatically actuated connector 0.030-0.050 1/8 npt
new lot of 52 compression tube tee adapters, 1/8 npt male to 1/4 tubing
square d 9001k2l1wh13 new white cap illuminated pushbutton 9001k2l1wh13
lot of 5 allen bradley 1489abh12 new auxiliary switch 1489-abh12
fanuc a20b-2100-0741 new a20b21000741
gardner denver 4za new 4za
issc 1010-1-g-2-b new 10101g2b
square d lll36600-u31xre10 powerpact ll600 circuit breaker, 600a, 3p, 600v,
marathon 6t200a3b fuseblock, 3 pole, 200 amp, 600 volt,
allen bradley 871tm-n40cp30-a2 new inductive proximity sensor 871tmn40cp30a2
pilz pnoz s11c 24vdc 8n/0 1 n/c kontakterweiterung 751111 relè blocco contatto
beckhoff el1098 ,8-kanal-digital-eingangsklemme el 1098, digital input terminal
hoffman d-ah101 enclosure heater 110-120v 50/60hz 10w
ge tedas2ab1r auxiliary switch; coil rating 6amp 240vac - nib
adept t1 pendant, 10m operator panel roboter- hand-held programming device
zeiss lq 150 endolive, microscopy
siemens 6es5 942-7uf15 simatic s5 zentralbaugruppe f.s5-115f, 6es5942-7uf1, e:2
siemens 6ds1715-8bb teleperm analog rechnerbaugruppe 6ds1 715-8bb
design guild lamp only 951482-395 - open box clearance!
hp compaq nv478ut dc7900 ultra-slim, 160gb, 2.93ghz cpu, 2gb ram, see details
standard genuine parts switch part # ps-249
trending at $23.11
macro sensors lvc 2412 low voltage conditioner, power input: 18-30vdc/9-15vdc
nb swk 10guu and swk 10gwuu flange bearings on 5/8 shaft, length: 12 long
new pentair 1000366 magnum it 742 control drain valve cartridge, no hardware
new microscan ib-131 99-400005-02 host interface quadrus mini bar code reader
yokota yex-501 used 3/8 drive pneumatic controlled reversible wrench yex501
seco precison tool sd203-4.0-17-6r1 02449863 edp18888 new sd20340176r1
sonics & materials fc740 used power supply fc740
minarik mm21111b used motormaster 20000 series motor speed controller mm21111b
fanuc a20b-2901-0340 used memory module a20b29010340
1 pc. square d kh361251021 i-line circuit breaker, 3 pole, 125 amp,
allen bradley 100-a75nz243 ser. a used contactor 24vdc coil 100a75nz243
ckd cmk2-25-600 new pneumatic cylinder cmk225600
port omega easylog 24 rft , temperatura logger + micro i-server + ebw 1
honeywell 621-9934 i/o rack power supply , 621 i/o system
pilz pnoz s5 c 24vdc 2 n/o 2 n/o t sicherheitsschaltger?t 751105 safety relay
allen-bradley 100s-d180ea22c 3-pole contactor 600v
allen bradley 193-bsc12 series a overload relay 600v 9-12a - nib
siemens 6se6436 2bd25 5ca0 convertidor de frecuencia 6se6 436 2bd25 5ca0
siemens simatic s5, 6es5491-0lb11 adaptionskapsel 6es5491-0lb11 e stand 02
sick mra-g080-103d3 seilzugmechanik para servoflansch con 6mm eje 5322778
7″ open impeller
industrial devices nh315b-18-mf1-fs2-q-bs electric cylinder actuator w/ brake
846935-rc 415710-13a
ge fanuc he693adc816d analog input module, 16-bit analog voltage, -10 to +10vdc
cvi 35-20 snap in lens holder ? 50.8mm (2) uses metal retaining ring
weidmuller 915920-67 terminal block interface breakout board
parker compumotor sm161ae-n10n brushless servo motor 340v 2.1 a 0.250 shaft
parker daedal 4054m linear slide stage (missing thumb screw)
new hubbell sesrwne led exit sign, single face, voltage: 120/277vac, red letters
eaton cutler hammer 10316h138 new precision limit switch 10316h138
honeywell gas pressure switch 500-3500 mm water 1-5psi c437g used c437g
pinnacle systems ul-101-2p new ultra touch safety module ul02p
fanuc a16b-1211-0860/05a used memory module circuit board a16b1211086005a
force control mb-210-236-05 reman. mb21023605
1pc. ge 9t58k4183 industrial control transformer,
ge scr, c355e, 500v/275a,
westinghouse ncg31200f circuit breaker, 1000 amp, ground fault, shunt trip,
beckhoff kl9184 hd-busklemme, 16-kanal-potenzialverteilung, kl 9184 bus terminal
keyence fu-95 fibre-optic device z flüssigkeitspegelerkennung
sick isd400-1111 optical data transfer 1042286 optical data transmission
exco ex- cb88 7.5 x 7.5 w 2x .75 fasteners; anchors post beam foundation
hansen lb5 vari-level 40 probe for ammonia bp 1010b
rexroth 3-phase permanent magnet servo motor msk100c-0200-nn-m1-bg2-nnnn - ne...
uryu us-3.5b pmatic screwdrivers, screws
craftmade light kit 420w - surplus!
siemens 1fk7060 5af71 1ta0 simotics servomotore sincrono 1fk7 060 5af71 1ta0
ac delco 15-4273 cooling fan clutch gm part #14001193
dayco poly rib part # 5061093
hughes vta-61 weld head work opening 1.75 stroke .33 250w 115vac *for parts*
parker compumotor cm232ax-113673 servo motor 340v
smc mxs8-50 air slide table, pressure range: 0.15~0.7mpa (21.75~101.5psi)
tescom 44-2660-241 regulator, outlet pressure range: 0-25psi, ports: 1/4 nptf
rofin sinar 625-3042530 powerline-10e laser resonator module, hq e line
kenrie inc micromatic machine tool 9-8387-5627-43 new 98387562743
phd arm over clamp pec34d-1-105-ad000-m001 new pec34d1105ad000m001
mrc bearings 309szzc new
stanley bostitch d 60 used pneumatic carton stapler / closer 3/4 max d60
general electric / ge gem1000mltaa5-5 new ballast 86655 gem1000mltaa55
1 pc 4 port oxygen manifold with victor equipment co. oxygen regulator,
abb 3hac36191 new board 3hac3619-1
allen bradley 20ab015a0aynanc0 ser. a new-no box powerflex 70 20ab015a0aynanc0
beckhoff kl3022,2-kanal-analog-eingangsklemme kl 3022,2- canal analogique entrée
ifm iga3008-apkg/us-100-dpo induktiver sensor ig5559 proximity switch
moeller fák 3r, 4x, 12,13, ip 67/69k, emergency off,emergency switch, switch
import direct 17-0625 oil pressure switch (37250-pr3-003)
appleton n2d752023 receptacle interlocked with switch 20 a 125v 1hp -
sick wtb11-2p2431 reflexions-lichttaster 1041376 photoelectric proximity sensor
grc isomatic flow diversion valve 21g-151262
vicolux vision & control dl30x30-r633/m5 diffuse area light, diffuses licht
siemens 6es7 138-4dc00-0ab0 schrittmotoransteuerung 6es7138-4dc00-0ab0, e:5
fabco air mp3x3x3x1ffa-nr multi-power cylinder, 3-stage extend, 1-stage retract
ranger firewalker boots size 7 medium. steel toe.
bank of 5 festo solenoid valves (3x mfh-5-1/8, 2x mfh-3-1/8), 4mm barb fittings
new thomson true right angle 2:1 gearhead ntr42-002-s
veriflo hfr901s4pbv14 pressure regulator 4 port 1/4 npt 0-100 psi 1-7 bar gauge
parker zeta57-83-mo stepper motor, static torque: 125oz-in, 0.25 shaft, 8-wire
new in bag nb 127275-001/bg3310a-300h-a1s-gk-pnp ball screw slide 15 x 3 x 2
set sti 15 curtains ms46-30-350-q1-x ms46lr-30-350-q1-r-nc-fp new ms46 & ms46lr
smc cylinder cdq2b32-xc11-dcj061kj new cdq2b32xc11dcj061kj
honeywell 060-6879-02 new sensotec model dld-ch lvdt demodulators 060687902
luma pro 6cgn1 new wet locaiion led exit sign 120/277v 6cgn1
numatics cylinder 2bore ri-505225-1 f1al-02a1d-caa0 new ri5052251 f1al0sa1dcaa0
ranco tw1510 thermostat,
1 pc square d powerpact circuit breaker, hja36045, 45a, 3p,
allen bradley 6690ds2 ser. b used 440067203 rev. n
beckhoff ie1011,8-kanal-digital-eingang link-extension scatola 24 vdc nuovo /
keyence pz-v12p selbstjustierender photoelectric sensor 5-100mm photoelectric
asb acr 0170-4/1, ac servomotor motor 4000/min motor
~750~ belden ppc ex6wsplus aquatight rg6 cable compression connectors coax
ilsco pde-18-400-cu power distribution blocks pde series 335 amp 600vac -
siemens simatic s7 6es7 315-6ff04-0ab0 central processor unit 6es7315-6ff04-0ab0
innomag cast iron outer magnet - surplus!
siemens 6es7414-3xj00-0ab0 ordinateur 414-3 6es7
846935-rc 415710-13a
reliance 1 hp ac motor p14j2421n - surplus!
motorcraft fuel injector part # cm3974
cummins genuine parts solenoid part # 3035342
encoder products company 260-n-r10-s-0200-r-hv-1-s/35-sf2ce incremental encoder
new autoclave engineer 20sc9071 2-way needle valve, pressure ratings: 20,000 psi
new in box murphy egs21t-300-24-a temperature swichgage, voltage: 24vdc
new sumitomo 11:1 cyclo servo-100 gearhead xfcgs 106-11
rosemount analytical model 56-03-22-38-ht ph/orp 4 relay hart 85-265vac *details
uson dual tester memory module 430-x300 rev. c used 430x300 revc
toyooki kogyo hk3-wf1e-10a new-no box valve hk3wf1e10a
durant eaton 6-ye-40724-400-er-u new 6ye40724400eru
ross dm2cna88a21001 used dm2 crossflow serpar valve 80339632 dm2cna88a21001
siemens 6se6420-2ud17-5aa1 new drive with profibus module 6se64202ud175aa1
allen bradley 1494v-ds200 ser. b used disconnect switch w/ 1494v-fsr622 / fuses
1 pc. gm oem 12472164 right rear bumper extension,
b&r automation x20 bc 0083 used ethernet powerlink module w/ x20bt9400/ x20bb80
pepperl+fuchs visolux rl 4/37 reflexions-lichttaster druckmarkenabtastung
schneider telemecanique tsxdet3242 modulo ingresso tsx det 32 42, nuovo
beckhoff ek1100 ethercat-koppler ek 1100 chat de l'éther couple f
cutler-hammer e30ad compact pushbutton -
chromalox 3421-33360 120/230vac
lutron dimmer switch nf-20 - surplus!
siemens 6av6 642 0ea01 3ax0 simatic mp 177 6 el panel de tacto,6av6642 0ea01
siemens 6av6 542-0bb15-2ax0 operatore pannello op170b
siemens 6ds1715-8bb teleperm analogico rechnerbaugruppe 6ds1 715-8bb nuovo
waterous collar-shift pump transmission part # 71099-2
mopar winoow motor part # 04240492 new old stock
cutler-hammer ce3000k2afs transformer 3kva 220-480v-primary 110-120v-secondary
new smc ise30a-n01-p-p pressure switch, voltage: 12-24vdc pressure: -14.5~145psi
yaskawa hi-25e magnetic contactor coil voltage: 200 vac 50/60 hz, contacts: 550v
sola hd sdu 500-5 industrial ups 230vac 50/60hz 500va 300w *needs new battery*
new miyachi me-1742d-00 power supply circuit board
keyence cv-c11 new ccd camera with mounting bracket cvc11
square d 997317 used 125a circuit breaker 997317
temposonics 315000000 new postttion sensor
siemens 6es7 322-1hf01-0aa0 new-no box simatic s7 output module 6es73221hf010aa0
strong reducing valve type k new - no box type k
allen bradley z-36379 new operator head z36379
telemecanique contactor, lp4 d2500, 40a, 690v, 24vdc,
schneider mgn61347 circuit breaker, multi 9, c60, 2p, 3a, no box
ifm efector st3609 str?mungsw?chter str?mungssensor scr12abbfpkg/us / ovp
indur antriebstechnik ag lti-0,6 / 40-24/e,al-4258 regulator current controller
elotech s1000-00-000-1 grenzwertmelder grenzwert-überwacher limit monitor
ge te100cs 100 amp 600v circuit breaker disconnect box--!!
eaton e34vhbk1 corrision resistant selector switch 3-postttion
flowserve 1″ seal a23m1375dd3 - surplus!
wago 750-830 controlador bacnet / ip controlador nuevo en caja original
siemens 6sn1145-1aa01-0aa2 simodrive 611 einspeisemodul 6sn1 145-1aa01-0aa2,v: d
siemens 6sl3420-2te15-0aa1 sinamics double motor module fs : a ,6sl3
emerson dxa-308 postttioning servo drive, voltage: 120vac 50/60hz, rev c3/c9
banner ppm8 flat-panel 8 lcd monitor, aspect ratio: 4:3, voltage: 24vdc
fostec fiber optic ringlight 32 length, 2 ring inner diameter, 5/8 input
new cognex con-dvt-brk i/o breakout board 195-0525r
ultex apu 44ma speed/pressure controller 2x 12-pin ms round 3-pin din 9mm hose
scitec instruments model 420 dual phase analogue lock-in amplifier 115/230vac
lot of 40 weidmuller 1674300000 terminal blocks, zdk 2.5/1.5, 275v 18a
846935-rc 415710-13a
square d fal36035 new-no box 35a circuit breaker fal36035
ge cr7za 10 used contactor with cr7g1xm overload relay cr7za10
regal beloit g-331 new 1-7/8-14 ns hs tap 8/k g331
interface pcdio24-p used card / circuit board pcdio24p
hubbell 3100r6w used 100a 250 vac wet locaiion receptacle 3100r6w
hammond mpb6 pushbutton enclosure,
allen bradley 802r-amc ser.b new 802ramc
crouse hinds tmcx3112 1 cable fitting for hazardous locaiions -nib old putty
siemens 6es7321-7th00-0ab0 simatic s7 digitaleingabe 6es7 321-7th00-0ab0 e08
delaval pp046jl-01187-21-bf50171-cfsp17407 mechanical seal,
1 pc. gm/ac delco oem fuel pump module kit, gm# 19153047, acd# m10049,
allen bradley vpl-b1003f-ck12aa ser. a used ac servo motor vplb1003fck12aa
allen bradley powerflex 70 20ad3p4f1aynnenn new in box
eaton mopjg120c series g motor operator (j) 1a 110 - 125v - recon/tested
becker carbon vanes bg21-047 (packs of 7) - surplus!
toshiba transistor part# mg50m2yk1 new old stock
yokogawa sc42-ep08 plug-in conductivity sensor, max temperature: 110c / 230f
notrax rubber honeycomb work mat 2'x3' new 543s0023bl
honeywell 621-3580 input module input module 24 vdc, 621-3580
eaton/cutler-hammer n501cs1b3a 24 vdc 3-pole open type starter -
c-12857 new surplus no box 261456 c12857
leeds lms-100 weighted heavy duty microscope stereoscope boom stand base 15-3/4
cutler hammer proximity switch e57fbl12a2sa-m new e57fbl12a2sam
new smc cs1n125a-xb6-ps cs1/cs2 tie rod cylinder seal kit non-lube type
new igus tre.70.110 triflex r ez e-chain 3d multi-axis 3.19? length: 39 (1m)
martin 80b19 sprocket, stock bore,
mac 56c-72-611jc solenoid valve, with 130b-611jc solenoid, 2-postttion 3-port
fostec 20670 fiber optic light source, power: 15vdc dc at 100ma, 9-pin d-sub
ford motor company part # 1w1z-2c190-aa new old stock
siemens 6es7132 4fb01 0ab0 electronic module for et 200s,6es7 132 4fb01 0ab0
allen bradley 1747-l40c ser. c used processor unit 40 i/o frn 6 1747l40c
siemens 6es7332-5hd01-0ab0 analog output sm 332, 6es7 332-5hd01-0ab0, fs:11
siemens 3ra1110-0dd15-1bb4 verbraucherabzweig direktstarter
ingersoll-rand smp1000 (4″ impeller) stainless steel pump - surplus!
allen bradley 1794-ia16 ser. a used 120 vac input module w/ 1794-tb3 1794ia16