Thaum tsim Ethernet tes hauj lwm, ntau chav kawm ntawm kev hloov khoom siv tau siv. Cais, nws tsim nyog hais txog cov kev hloov pauv uas tsis muaj kev tswj hwm - cov khoom siv yooj yim uas tso cai rau koj kom sai thiab ua haujlwm tau zoo ntawm lub network Ethernet me me. Kab lus no muab cov ncauj lus kom ntxaws txog kev nkag-theem tsis muaj kev tswj hwm kev lag luam hloov pauv ntawm EKI-2000 series.
Taw qhia
Ethernet tau ntev dhau los ua ib feem tseem ceeb ntawm ib qho kev lag luam network. Cov qauv no, uas yog los ntawm kev lag luam IT, ua rau nws muaj peev xwm txav mus rau qib tshiab zoo ntawm lub koom haum network. Kev nrawm tau nce, kev ntseeg tau nce, thiab muaj peev xwm ntawm kev tswj hwm hauv nruab nrab ntawm lub network infrastructure tau tshwm sim. Cov neeg tsim cov ntaub ntawv hloov chaw tsis raug yuam kom tos ntev. Yuav luag tag nrho cov txheej txheem kev lag luam loj, xws li Modbus TCP, EtherNet/IP, IEC 60870-5-104, PROFINET, DNP3, thiab lwm yam, siv tus qauv zoo ib yam lossis zoo sib xws OSI ua lub hauv paus. Lub payload yog muab tso rau hauv ib lub thav duab thiab xa mus rau ib qho Ethernet network. Yuav luag txhua tus maub los niaj hnub no, ntse sensor lossis tus neeg teb xov tooj vaj huam sib luag yog nruab nrog Ethernet interface rau kev txuas mus rau lub network ntawm tib lub npe. Qhov no txhais tau hais tias, nyob rau hauv txoj kev xav, ib qho kev lag luam network tuaj yeem siv cov khoom siv Ethernet uas tuaj yeem pom hauv lub tuam txhab, chaw ua haujlwm, lossis txawm tias lub network hauv tsev. Txawm li cas los xij, hauv kev xyaum, ib chav kawm loj ntawm cov khoom siv tau ntev tau tsim los ua haujlwm tshwj xeeb nrog cov tes hauj lwm xws li Industrial Ethernet. Nws suav nrog cov khoom siv hauv lub network tau hloov mus ua haujlwm tshwj xeeb hauv ib puag ncig kev lag luam, ua kom muaj kev ntseeg siab, tsawg kawg ntawm latency, thiab tseem ua tau raws li ntau yam kev lag luam uas xav tau los ntawm kev lag luam tshwj xeeb. Hauv qhov no, lub ntsiab "kev sib ntaus sib tua", raws li txoj cai, yog kev lag luam Ethernet hloov. Qhov no yog vim qhov tseeb tias qhov hloov pauv yog ib qho khoom siv uas tso cai rau kev txhim khu kev qha thiab, qhov tseem ceeb tshaj, kev sib cuam tshuam sai ntawm cov khoom thiab cov nodes ntawm kev lag luam network.
Hloov - qhov kev daws teeb meem zoo tshaj plaws rau kev lag luam network
Ib qho kev hloov pauv, lossis hloov, yog cov cuab yeej tseem ceeb siv los tsim kev lag luam network. Vim li cas thiaj hloov tau? Tom qab tag nrho, muaj lwm yam khoom siv network, piv txwv li hub (hub) lossis router (router). Nws yog txhua yam hais txog kev ceev thiab kev ua haujlwm. Cov cuab yeej ceev tshaj plaws tau teev tseg yog lub hub; qee lub sij hawm dhau los cov cuab yeej no tau nrov heev vim nws tus nqi qis. Qhov tseeb, ib lub hub yog ib tug multiport repeater; nws ua haujlwm ntawm lub cev raws li OSI network qauv thiab relays tau txais cov ntaub ntawv rau txhua qhov chaw nres nkoj.
Ntawm qhov tod tes, cov tswv yim no tso cai rau qhov qeeb qeeb hauv lub network, tab sis ntawm qhov tod tes, cov khoom thauj ntawm lub network nce, txij li kev tshaj tawm nrog qhov kev siv no hloov mus rau kev tshaj tawm. Qhov no feem ntau ua rau poob qis hauv kev ua haujlwm hauv network. Ib tug router, nyob rau hauv lem, yog ib tug ntaus ntawv uas ua hauj lwm nyob rau hauv lub network theem raws li tus qauv OSI thiab muaj kev nplua nuj heev functionality uas tso cai rau kev tsim kho ntawm cov tsheb thauj mus los txoj kev. Cov kev ua haujlwm zoo li no yuav tsum muaj kev ua haujlwm siab dua, txij li cov ntaub ntawv pob khoom raug tshuaj xyuas pib los ntawm lub taub hau ntawm qib 3 ntawm OSI qauv thiab siab dua. Yog li ntawd, kev ncua sijhawm ntev dua, txij li kev siv ntawm routers feem ntau yog software, tus nqi yog ib txwm siab dua, thiab cov kev ua haujlwm zoo li no yog qhov xav tau ntawm lub network tseem ceeb.
Yog li ntawd, cov kev hloov pauv ntawm qib sib txawv thiab kev ua haujlwm tau dhau los ua qhov dav tshaj plaws hauv kev lag luam Ethernet tes hauj lwm. Kev hloov pauv yog lub cuab yeej ntse dua li lub hub thiab nrawm dua li lub router vim tias nws ua haujlwm ntawm txheej txuas raws li OSI qauv. Kev khiav tsheb kom meej meej thiab xa ncaj qha mus rau tus neeg txais, uas tshem tawm cov khoom tsis tsim nyog ntawm cov khoom siv network, tso cai rau lwm ntu kom tsis txhob ua cov ntaub ntawv uas tsis yog rau lawv. Qhov no ua tiav los ntawm kev txheeb xyuas tus neeg xa khoom thiab chaw nyob MAC chaw nyob uas muaj nyob rau hauv txhua kis cov ntaub ntawv. Qhov kev hloov pauv no tso cai rau koj kom ua tiav qhov qeeb qeeb hauv kev faib tsheb thaum tswj hwm tus nqi tsim nyog.
Hauv nws lub cim xeeb, qhov hloov pauv muaj lub rooj (CAM-table), uas qhia txog kev sib tham ntawm MAC chaw nyob ntawm tus tswv tsev thiab qhov chaw nres nkoj lub cev ntawm qhov hloov, uas txo cov load ntawm lub network, txij li qhov hloov pauv paub meej qhov chaw nres nkoj. xa cov ntaub ntawv mus rau. Txawm li cas los xij, nws tsim nyog xav tias thaum lub hloov pauv tau qhib lossis rov pib dua, nws ua haujlwm hauv hom kev cob qhia, txij li lub rooj sib tham yog khoob. Hauv hom no, cov ntaub ntawv uas tuaj rau ntawm qhov hloov pauv raug xa mus rau txhua qhov chaw nres nkoj, thiab qhov hloov pauv tau txheeb xyuas thiab nkag mus rau tus xa MAC chaw nyob rau hauv lub rooj. Sij hawm dhau mus, cov tsheb khiav yog nyob hauv thaj chaw raws li qhov hloov pauv sau ua tiav MAC chaw nyob daim ntawv qhia rau txhua qhov chaw nres nkoj.
Tam sim no ntau lub tuam txhab ntawm cov khoom siv network rau kev lag luam tes hauj lwm muab cov keyboards ua cov khoom siv kom ntseeg tau tias kev sib cuam tshuam ntawm lub network nodes. Cov ntaub ntawv pov thawj suav nrog cov keyboards ntawm ntau yam kev ua haujlwm; raws li txoj cai, muaj kev tswj tsis tau, tswj thiab L3 qib keyboards. Thiab yog tias L3 keyboards raug siv los ua lwm txoj hauv kev rau routers ntawm theem network tseem ceeb thiab tsuas yog cov teeb meem tshwj xeeb muaj feem cuam tshuam nrog lawv cov kev xaiv, ces qhov kev xaiv ntawm kev tswj hwm thiab tswj tsis tau hloov mus rau qhov tseeb txhais ntawm cov haujlwm uas lub network ntaus ntawv yuav tsum. daws. Tom ntej no, peb yuav saib qhov sib txawv ntawm cov tswj thiab tsis tswj cov keyboards.
Tswj thiab tsis tswj cov keyboards
Kev tswj hwm thiab tswj tsis tau hloov pauv yog ob yam khoom siv sib txawv uas ua haujlwm ntawm qib L2 ntawm OSI qauv. Ib qho kev hloov pauv uas tsis muaj kev tswj hwm yog tsim los muab faib ceev thiab kis tau tus kab mob sib npaug thoob plaws txhua tus neeg koom tes. Qhov no yog qhov kev daws teeb meem zoo tshaj plaws rau cov tes hauj lwm nrog tsawg tus lej kawg; qhov zoo muaj xws li:
- kom ntseeg tau siab dhau ntawm Ethernet network;
- lub sij hawm teb luv luv;
- Kev tswj tau yooj yim;
- muaj kev ua haujlwm ntxiv rau kev tswj cov ntaub ntawv ntws.
Kev tswj kev hloov pauv muaj tus nqi siab dua, siv rau cov tes hauj lwm loj thiab muaj peev xwm tswj tau tag nrho cov kev sib kis, kev ceev, thiab tseem muaj peev xwm tswj tau ntxiv. Qhov tseeb, qhov no yog qhov kev daws teeb meem zoo tshaj plaws rau cov ntu hauv network uas yuav tsum muaj kev ua haujlwm ntxiv rau segmentation, redundancy, cov ntaub ntawv kev ruaj ntseg, thiab lwm yam. Tsis zoo li qhov hloov pauv tsis tau tswj hwm, qhov hloov pauv tswj yuav tsum tau teeb tsa los ntawm kev qhia ntau qhov ntxiv thiab yuav tsum tau teeb tsa.
Unmanaged keyboards yog ntsaws thiab ua si cov khoom siv uas tsis xav tau kev teeb tsa nyuaj lossis kev paub tob. Lawv tso cai rau koj los npaj kev sib pauv sai sai ntawm cov khoom siv ntawm Ethernet network yam tsis muaj kev teeb tsa ntxiv. Cov keyboards no tso cai rau cov khoom siv Ethernet sib txuas lus nrog ib leeg (xws li PLCs thiab HMIs), muab kev sib txuas rau lub network thiab xa cov ntaub ntawv mus rau qhov chaw los ntawm tus neeg xa khoom. Lawv tuaj nrog lub teeb tsa ruaj khov thiab tsis tso cai rau kev hloov pauv rau qhov chaw, yog li tsis tas yuav tsum tau ua qhov tseem ceeb rau cov ncej lossis ua qhov kev teeb tsa ntxiv.
Unmanaged keyboards feem ntau yog siv los txuas cov khoom siv peripheral mus rau lub network spurs lossis hauv ib lub network me me uas muaj ntau yam khoom siv. Hauv kev lag luam ib puag ncig, nws yog ib qho tsim nyog yuav tsum siv cov keyboards kom haum rau cov kev xav tau tshwj xeeb.
Cov keyboards muaj tsim rau ntau yam kev lag luam xws li kev tsim hluav taws xob, roj thiab roj, kev thauj mus los thiab kev tsim kho vaj tse, thiab lwm yam. Lawv tau tsim tshwj xeeb los ua haujlwm nyob rau hauv ntau qhov kub thiab txias, kev vibrations thiab shocks thiab pab txhawb rau kev tsim kom muaj txiaj ntsig zoo thiab txhim khu kev ruaj ntseg network.
Advantech series hloov
Muaj cov keyboards Advantech series yog cov khoom siv nkag-theem thiab tau tsim los txhim kho kev sib cuam tshuam ntawm cov cuab yeej los ntawm kev tsim Ethernet network. Tam sim no nyob rau hauv series Ntau tshaj 25 cov khoom siv tau suav nrog, cov lus hauv qab no qhia txog kev tawg ntawm tus lej xaj.
Hauv qhov no, cov keyboards tuaj yeem nruab nrog ob qho tib si RJ-45 chaw nres nkoj thiab cov chaw nres nkoj kho qhov muag rau cov ntaub ntawv xa mus dhau ib hom thiab multimode fiber ntau, qhov siab tshaj plaws tuaj yeem ncav cuag 1 Gbit / s.
Functionality ntawm series keyboards
Lub functionality ntawm unmanaged keyboards feem ntau tsis muaj dab tsi txawv tshaj plaw. Txawm li cas los xij, cia peb txheeb xyuas seb cov haujlwm twg tseem muaj nyob ntawm Advantech series keyboards .
Tsis siv neeg tshawb pom ntawm MDI / MDI-X kev sib txuas hom
Qhov no feature tso cai rau koj mus cuag tej yam Ethernet ntaus ntawv mus rau lub keyboards yam tsis muaj kev txhawj xeeb txog lub cable hom: ncaj los yog crossover.
Feem ntau, "txoj kab ncaj nraim" yog siv los txuas lub network adapter rau L2 cov khoom siv network (lub hub lossis hloov). Txhawm rau txuas ob lub network zoo ib yam rau ib leeg lossis, piv txwv li, lub network adapter rau lub router, nws raug nquahu kom siv cov kab sib txuas. Lub xub ntiag ntawm MDI / MDI-X muaj nuj nqi tso cai rau koj siv txhua hom cable nrog qhov hloov.
Tsis siv neeg nrhiav pom hom network (Auto-Negotiation)
Qhov kev ua haujlwm no, tom qab MDI / MDI-X, belongs rau Plug thiab Ua Si thiab tso cai rau koj txiav txim siab seb hom network thiab kis ceev tau muab los ntawm tus qauv Ethernet. Hauv kev xyaum, qhov no yog qhov tseem ceeb tshwj xeeb, txij li lub network uas twb muaj lawm tuaj yeem siv cov khoom siv nrog cov yam ntxwv sib txawv, los ntawm 10 Mbit / s txog 1 Gbit / s. Auto-Negotiation ua rau lub neej yooj yim dua rau cov neeg siv network. Lub cuab yeej nws tus kheej yuav "sib tham" qhov nrawm nrog nws ciam teb "Ethernet neeg nyob ze".
Tshaj tawm cua daj cua dub tiv thaiv
Tshaj tawm kev tiv thaiv cua daj cua dub kuj yog ib qho tseem ceeb heev rau cov keyboards. Ib qho cua daj cua dub tshaj tawm feem ntau yog tshwm sim los ntawm lub voj voog hauv lub network hauv zos lossis tus cwj pwm tsis raug ntawm ib tus neeg koom nrog hauv lub network. Nyob rau hauv cov ntaub ntawv no, lub network yuav tau sau nrog ib tug loj tus naj npawb ntawm useless thav duab, uas yuav cuam tshuam rau nws ceev.
Qhov hloov pauv qhov kev tiv thaiv cua daj cua dub tuaj yeem lim tawm cov xov xwm tshaj tawm. Thiab thaum kev tshaj tawm xov xwm tshaj li qhov pib, lub network tseem tseem ua haujlwm vim tias qhov hloov pauv tau khaws cia bandwidth rau kev sib kis ntawm ib txwm thav ntawv.
Tshaj tawm cua daj cua dub tiv thaiv feature ntawm cov keyboards uas tsis tswj tau enabled los ntawm lub neej ntawd. Cov ncauj lus kom ntxaws txog tus nqi pib rau txhua tus qauv yuav tsum tau qhia meej ntawm cov chaw tsim khoom lub vev xaib raug cai.
P-Fail relay
Cia peb pib nrog qhov tseeb tias feem ntau cov qauv hauv koob tsim rau input voltage ntau ntawm 12β¦48 V DC. Cov tswv yim yog duplicated thiab muaj kev tiv thaiv tiv thaiv polarity reversal, nrog rau kev tiv thaiv overcurrent los ntawm tus kheej-reset fuse. Muaj qhov sib piv qhov hluav taws xob ntawm lub tswv yim, thiab thaum qhov hluav taws xob siv rau ob qho tib si inputs, tus sib piv cia li xaiv tus nqi siab dua thiab ua rau qhov kev tawm tswv yim tseem ceeb. Thaum qhov hluav taws xob ntawm ib qho ntawm cov khoom siv tsis ua haujlwm lossis thaum nws qib qis dua 12 V, qhov hloov pauv tau hloov mus rau qhov thib ob channel thiab kaw P-Fail relay. Qhov kev ua haujlwm no tso cai rau koj los saib xyuas lub xeev ntawm cov keyboards 'faiv fab mov network thiab teeb liab ua haujlwm tsis zoo.
LED qhia
Qhov no tso cai rau koj los ntsuas qhov xwm txheej ntawm qhov hloov pauv los ntawm kev kuaj pom nws. Txhua qhov chaw nres nkoj ntawm cov ntaub ntawv hloov pauv muaj ob lub LEDs los tso saib kev sib kis ceev, kev sib txuas raws li txoj cai thiab muaj peev xwm sib tsoo. Kuj tseem muaj cov LEDs uas sib npaug P-Fail relays, uas tau ua haujlwm ib txhij thaum ib qho ntawm lub zog hluav taws xob tawg.
PoE (Power-over-Ethernet)
Ntawm ib tug xov tooj ntawm unmanaged keyboards nyob rau hauv lub series Lub Hwj Chim-over-Ethernet muaj nuj nqi tau ua tiav. Nws tso cai rau koj muab lub zog rau cov chaw taws teeb tswj raws li IEEE 802.3af thiab IEEE 802.3at (PoE+) cov qauv, qhov twg cov kab sib tw sib tw ntawm qeb 5e thiab siab dua yog siv los ua cov kab hluav taws xob. Nws raug nquahu kom siv tus nqi nominal ntawm 53...57 VDC raws li cov khoom siv sib txuas rau cov keyboards no kom tsis txhob muaj hluav taws xob poob ntawm kab.
Ua-hauv EMI thiab ESD tiv thaiv
Hloov series muaj ib tug built-in filtering system los tiv thaiv electromagnetic cuam tshuam thiab static voltage. Los ntawm txoj kab hluav taws xob, qhov hloov pauv tuaj yeem muab kev ua haujlwm tau zoo thaum lub sijhawm luv luv impulse suab nrov nrog lub amplitude txog li 3000 V DC, nrog rau thaum lub sij hawm electrostatic tawm ntawm RJ-45 ports mus txog 4000 V.
Kev tsim kho
Tag nrho cov keyboards nyob rau hauv lub series muaj lub tsev hlau ruaj khov nrog qib kev tiv thaiv IP30. Structurely series tuaj yeem ua tau nyob rau hauv ob versions, qhov no yog ib tug version rau mounting ntawm ib tug DIN rail los yog rau mounting nyob rau hauv ib tug 19 'rack. Txhua qhov tsim nyog mounting yog suav nrog hauv cov khoom siv. Tsis tas li ntawd, cov keyboards uas tau tsim los rau ntawm DIN rail tuaj yeem ntsia tau rau ntawm lub vaj huam sib luag; lub mount yog nkag.
xaus
Industrial unmanaged keyboards yog cov cuab yeej hloov kho kom ua haujlwm tshwj xeeb hauv ib puag ncig kev lag luam. Lawv muab kev sib raug zoo thiab ceev ceev ntawm Ethernet nodes, thiab tsis tas yuav tsum tau ntxiv chaw thiab configuration. Tam sim no, qhov hloov pauv tsis tau tswj hwm yog ib qho yooj yim tus nqi qis hauv lub network uas tuaj yeem daws cov haujlwm tseem ceeb uas cuam tshuam txog kev sib pauv ntawm Ethernet network. Tsis xav tau kev teeb tsa; koj tsuas yog yuav tsum tshem tawm qhov hloov ntawm lub thawv thiab txuas tag nrho cov khoom tsim nyog.
Advantech Unmanaged Hloov Series , koom nrog hauv chav kawm ntawm cov khoom siv tau piav qhia, txhawb nqa ntau yam ntawm cov haujlwm tseem ceeb thiab tsim nyog, xws li kev tshawb nrhiav tsis siv neeg ntawm MDI / MDI-X kev sib txuas hom, tsis siv neeg nrhiav pom hom network (Auto-Negotiation), kev tiv thaiv cua daj cua dub, PoE, kev tiv thaiv tiv thaiv electromagnetic cuam tshuam thiab electrostatic qib, thiab lwm yam. Ua ke, tag nrho cov haujlwm no tso cai rau koj siv los daws cov teeb meem yooj yim ntawm kev teeb tsa kev sib cuam tshuam ntawm lub network thiab cov nodes kawg.
Daim ntawv thov piv txwv
Ib qho ntawm Advantech cov neeg siv khoom yog . Txhawm rau txhim kho cov ntaub ntawv kev sib txuas lus muaj peev xwm thaum txo cov nqi cuam tshuam, CNPC xaiv Advantech's oilfield xyuas thiab tswj kev daws teeb meem. Cov ntaub ntawv raug xa mus los ntawm lub xov tooj ntawm tes los ntawm thaj teb mus rau qhov chaw tswj hwm. Routers tau nruab nrog keyboards nyob rau hauv cov khoom uas nyob ib sab ntawm lub twj tso kua mis, muab kev sib txuas network rau cov khoom siv xws li lub koob yees duab, PLCs, RTUs thiab lwm yam khoom siv.
Kev Sau Ntawv
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Tus sau yog ib tug neeg ua haujlwm ntawm lub tuam txhab
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