EEPROM hauv Industrial Automation: Yuav ua li cas PLC, HMI, thiab VFD Nco Ua Haujlwm (thiab Tsis Ua Haujlwm)

A maintenance technician inspecting an open industrial control cabinet after checking a PLC that lost its saved settings

Lub tshuab rov pib dua tom qab lub hnub poob hluav taws xob, thiab PLC rov qab los nrog nws cov kev txwv tsis pub rov qab mus rau lub Hoobkas. Los yog ib lub vaj huam sib luag HMI uas tau khiav zoo rau peb xyoos tam sim ntawd tsis nco qab nws daim ntawv qhia zaub mov ib hmos. Feem ntau pawg saib xyuas dhia ncaj nraim mus rau "PLC tuag" lossis "peb xav tau lub vaj huam sib luag tshiab." Feem ntau, qhov tshwm sim tiag tiag yog me me: ib qho me me uas tsis yog - lub cim xeeb tsis zoo hu ua EEPROM, lossis lub voj voog uas txhawb nqa nws.

Phau ntawv qhia no rhuav tshem dab tsi EEPROM ua tau tiag tiag hauv koj lub PLC, HMI, thiab VFD, yuav ua li cas qhia lub cim xeeb - cuam tshuam los ntawm lwm yam ua tsis tiav, thiab yuav ua li cas thaum koj tau lees paub qhov teeb meem. Nws tau sau rau cov neeg uas tswj hwm thiab qhia meej cov cuab yeej tswj kev lag luam, tsis yog rau cov tsim chip, yog li peb yuav nyob twj ywm rau qhov tseem ceeb ntawm cov nroj tsuag hauv pem teb.

EEPROM yog dab tsi, thiab Vim Li Cas Koj PLC xav tau nws?

Dab tsi EEPROM tiag tiag yog

EEPROM (Electrically Erasable Programmable Read-Tsuas Nco) yog hom tsis muaj - nco tsis hloov. Qhov ntawd txhais tau hais tias nws tuav nws cov ntaub ntawv txawm tias tom qab fais fab raug tshem tawm, tsis zoo li tus qauv RAM, uas poob txhua yam thaum nws poob lub zog. Cov cuab yeej no yog vim li cas PLC, HMI, lossis VFD tuaj yeem raug tshem tawm, xa tawm, zaum hauv lub tsev khaws khoom, thiab tseem khau raj nrog tib qhov kev pab cuam thiab teeb tsa lub hli tom qab. Yog tsis muaj EEPROM lossis qhov zoo sib xws uas tsis yog - lub cim xeeb tsis hloov pauv, txhua tus maub los yuav tsum tau rov ua dua los ntawm kos tom qab txhua lub voj voog hluav taws xob, uas yog qhov pom tseeb tsis ua haujlwm ntawm cov kab ntau lawm.

A close-up of a PLC circuit board showing the small EEPROM chip that stores the controllers program and settings

Dab tsi tiag tiag nyob hauv tsis yog - nco tsis hloov

Tsis yog txhua daim ntaub ntawv hauv koj cov khoom siv zaum hauv tib qhov chaw, thiab lumping nws tag nrho ua ke yog qhov ntau qhov tsis meej pem pib. Ntawm no yog ib qho yooj yim tawg ntawm dab tsi feem ntau yog nyob ntawm tsis yog -volatile cia nyob rau hauv txhua yam ntaus ntawv:

Ntaus	Cov ntaub ntawv ib txwm muab khaws cia rau hauv tsis yog - lub cim xeeb tsis zoo
PLC	Cov neeg siv cov kev pab cuam (ladder logic, function blocks), retentive data, kev sib txuas lus
HMI	Screen layouts, zaub mov txawv, tswb configurations, keeb kwm sib txawv teeb
VFD	Motor parameters, acceleration thiab deceleration curves, calibration thiab txhaum keeb kwm

Lub PLC tiv thaiv koj qhov kev tswj xyuas logic. HMI tiv thaiv qhov cuam tshuam koj cov neeg ua haujlwm cia siab rau txhua qhov kev hloov pauv. Lub VFD tiv thaiv qhov tseeb lub cev muaj zog tuning uas coj ib tug neeg teev kom tau txoj cai. Thaum ib qho ntawm cov no tau wiped, tus nqi yog ntsuas nyob rau hauv downtime, tsis nyob rau hauv ib tug hloov nti.

Cov lus nug ceev: Puas yog EEPROM zoo ib yam li lub roj teeb -rov qab nco hauv kuv PLC?

Tsis yog, thiab qhov sib xyaw ua ke no- ua rau muaj kev ntxhov siab ntau ntawm cov nroj tsuag hauv av. Saib tshooj tom ntej kom paub qhov txawv.

EEPROM vs. Flash vs. Roj teeb-Ram thaub qab: Lub luag haujlwm nco hauv tus maub los

Feem ntau cov tswj kev lag luam tsis cia siab rau ib hom kev nco. Lawv ua ke ob lossis peb, thiab txhua tus muaj txoj haujlwm tshwj xeeb.

Three types of PLC memory hardware an EEPROM chip a flash module and a backup battery laid out together on a workbench

Hom nco	Nws sau li cas	Yam endurance	Cov ntaub ntawv khaws cia tsis muaj zog	Lub luag haujlwm tseem ceeb hauv PLC
EEPROM	Hluav taws xob, byte byte	Txog li ntawm 1,000,000 sau lub voj voog	Xyoo, feem ntau 10 txog 20+	Cov chaw me me, tsis muaj, cov ntaub ntawv calibration
Flash	Hluav taws xob, hauv cov blocks loj	Kwv yees li ntawm 10,000 txog 100,000 sau lub voj voog	Xyoo, zoo ib yam li EEPROM	Firmware, cov kev pab cuam loj dua
Roj teeb -rov qab RAM	Tam sim ntawd, tsis muaj txheej txheem sau ntawv tshwj xeeb	Ua tau zoo unlimited	Tsuas yog ntev npaum li lub roj teeb	Cov ntaub ntawv khaws tseg, tiag - lub sijhawm moos, cov txee nyob

Qhov no yog vim li cas ib qho PLC feem ntau siv tag nrho peb. Flash lossis EEPROM khaws cov kev pab cuam thiab teeb tsa kom nws muaj sia nyob shipping, cia, thiab kaw ntev. Roj teeb -rov qab RAM tswj cov ntaub ntawv uas yuav tsum tau hloov kho tas li, xws li cov txee khiav lossis lub moos, tsis hnav lub nti uas muaj cov kab ntawv sau tas li.

Vim li cas koj PLC tseem xav tau roj teeb yog EEPROM tsis poob cov ntaub ntawv

Yog tias EEPROM twb tuav cov ntaub ntawv tsis muaj zog, vim li cas ntau CPUs tseem muaj lub roj teeb? Lub roj teeb tsis nyob ntawd los tiv thaiv EEPROM. Nws yog nyob ntawd kom ua kom lub sijhawm tiag tiag - lub sijhawm khiav thiab khaws cia cov ntaub ntawv khaws cia RAM (xws li cov nqi ntsuas tam sim no lossis lub sijhawm teem sijhawm nruab nrab - voj voog) ntawm lub zog hluav taws xob. Thaum lub roj teeb ntawd tuag, koj feem ntau yuav pom lub moos rov pib dua lossis qee qhov txiaj ntsig rov qab mus rau xoom, uas tuaj yeem zoo ib yam rau lub cim xeeb nti tsis ua haujlwm yog tias koj tsis paub yuav kuaj ua ntej.

Yog tias koj xav pom yuav ua li cas qhov no plays tawm ntawm tus qauv tshwj xeeb, pebQhov kawg Qhia rau Siemens S7-1200 PLCnpog lub CPU lub roj teeb thaub qab qhov thiab qhov nws tiv thaiv tiag tiag.

Yuav ua li cas EEPROM Ua Haujlwm Hauv PLC lossis HMI Module

Koj tsis tas yuav muaj keeb kwm ntawm semiconductor physics los tswj cov cuab yeej no, tab sis cov duab yooj yim ntawm qhov tshwm sim hauv lub nti ua rau cov tsos mob tsis ua haujlwm hauv ntu txuas ntxiv kom nkag siab yooj yim dua.

Lub rooj vag ntab, hauv cov ntsiab lus yooj yim

Hauv txhua EEPROM cell yog ib qho qauv me me hu ua lub rooj vag ntab, dai ntawm cov txheej txheej insulating. Cov hluav taws xob tuaj yeem raug thawb mus rau lossis tawm ntawm nws los ntawm kev siv hluav taws xob, thiab qhov twg lub xeev nws tsaws hauv nruab nrab yog binary 1 lossis 0. Vim tias lub rooj vag hluav taws xob cais tawm, tus nqi yuav nyob twj ywm txawm tias tom qab fais fab raug tshem tawm, uas yog tag nrho vim li cas hom kev nco no tsis yog - volatile. Xav tias nws yog qhov hloov pauv microscopic uas nyob hauv txoj haujlwm tom qab koj tso nws tawm.

Vim li cas byte-theem erasing tseem ceeb rau koj

Qhov kev nthuav dav uas tseem ceeb tshaj qhov physics yog qhov no: EEPROM tuaj yeem tshem tawm thiab rov sau cov ntaub ntawv ib byte ib zaug, tsis yog tshem tawm qhov thaiv loj tag nrho ib zaug raws li qee qhov flash nco ua. Tias yog vim li cas tus kws tshaj lij tuaj yeem hloov lub sijhawm teem sijhawm ib zaug hauv PLC khiav yam tsis muaj rov- rub tawm tag nrho cov haujlwm. Nws kuj txhais tau hais tias nyob rau hauv ib txwm ua haujlwm, qhov kev hloov pauv me me yog qhov tsawg - pheej hmoo, tus kheej - muaj kev nqis tes ua. Tab sis thaum lub nti nws tus kheej yog degrading los yog ua tsis tau tejyam, qhov precision tsis ua hauj lwm raws li nws yuav tsum, thiab qhov ntawd yog qhov uas tej yam pib zoo li cov tsos mob tau piav qhia tom ntej.

Cov tsos mob ntawm EEPROM thiab Memory Failure Symptoms nyob rau hauv Industrial Equipment

A technician pointing at an HMI touchscreen that has reset to its factory-default recipe screen

Tsis yog txhua qhov glitch yog lub cim xeeb tsis ua haujlwm. Tab sis plaub tus qauv no yog cov uas feem ntau taug qab mus rau EEPROM tsis ua haujlwm, hnav - tawm cov nti cia, lossis cov khoom siv hluav taws xob cuam tshuam.

Program poob lossis tsis siv neeg tshem tawm

PLC khau raj uas tsis muaj kev pab cuam thauj khoom, lossis ib qho kev pab cuam uas nyob rau nag hmo tsuas yog ploj mus. Qhov no feem ntau txuas rau kev sau ntawv uas cuam tshuam, piv txwv li lub zog poob tshwm sim thaum lub sijhawm rub tawm lossis kev ua haujlwm hauv kev txuag. Nws zoo nkaus li tam sim ntawd thiab tag nrho, tsis yog hloov maj mam hloov ntawm tus cwj pwm.

Parameters rov qab mus rau lub Hoobkas defaults

Kev teeb tsa uas siv sijhawm tiag tiag los teeb tsa dheev rov qab los tawm ntawm - ntawm - lub - lub thawv qhov tseem ceeb. Raws li tau sau tseg saum toj no, qhov no tuaj yeem los ntawm lub roj teeb thaub qab tuag tau yooj yim li los ntawm EEPROM tsis ua haujlwm. Txoj kev ceev tshaj plaws los qhia lawv sib nrug yog los xyuas seb lub sijhawm tiag tiag - lub sijhawm teev kuj tau pib dua. Yog tias lub moos tsis raug thiab kev teeb tsa tsis raug, xav tias lub roj teeb ua ntej. Yog tias lub moos zoo tab sis khaws cia tsis tau ploj mus, lub cim xeeb nti yog qhov ua txhaum ntau dua.

Kev sib txuas lus yuam kev lossis rov pib dua

Qee tus tswj hwm yuav cuam tshuam kev sib txuas lus tsis raug lossis poob rau hauv lub voj voog rov pib dua thaum lub cim xeeb sab hauv ua rau tsis zoo, vim tias lub kaw lus tsis tuaj yeem nyeem nws tus kheej kev teeb tsa. Cov tsos mob no yog ib qho yooj yim ua yuam kev rau ib qho teeb meem ntawm kev xaim lossis kev sib txuas, yog li nws tsim nyog txiav txim siab tawm cov cabling thiab daws qhov teeb meem ua ntej xav tias nws yog qhov yuam kev.

Cov cim ntawm kev sau ntawv - lub voj voog qaug zog

EEPROM muaj tus lej kawg ntawm kev sau thiab tshem tawm cov voj voog, feem ntau suav nrog ntau pua txhiab. Cov khoom siv uas sau rau lub cim xeeb ntau zaus (piv txwv li, lub chaw nres tsheb uas teev tus nqi lossis hloov kho qhov teeb tsa ntawm txhua lub voj voog) tuaj yeem hnav lub xovtooj tawm ntau xyoo ntawm kev ua haujlwm tas mus li. Daim paib qhia ntawm no yog sib quas ntus, ua rau lub cim xeeb tsis zoo ntawm lub cuab yeej uas tau nquag, siab -sau- lub voj voog kev pabcuam rau lub sijhawm ntev, es tsis yog tam sim ntawd tsis ua haujlwm ntawm lub cuab yeej nrog lub teeb lub voj voog.

Ceev tus kheej- xyuas ua ntej koj hu nws ua txhaum:

Puas yog qhov teeb meem tshwm sim tom qab lub zog cuam tshuam?
Puas muaj lub sijhawm tiag - moos tseem rov pib dua?
Puas yog lub cuab yeej nyob rau ntawm qhov siab - zaus sau lub voj voog (ntau qhov ntsuas lossis cov ntaub ntawv nkag)?
Puas yog qhov txhaum tseeb tom qab rub tawm qhov program tshiab, lossis nws puas rov qab tam sim?
Puas muaj cov chaw tsim khoom lag luam- cov lej yuam kev tshwj xeeb taw qhia txog kev ua txhaum kev nco?

Yog tias ob peb ntawm cov taw qhia tib yam, koj yuav muaj feem cuam tshuam txog qhov teeb meem nco tiag tiag tsis yog kev xaim, kev sib txuas lus, lossis teeb meem ntawm lub hwj chim. Yog xav paub ntxiv txog yuav ua li cas cov tsos mob tshwm sim hauv cov lej txhaum tiag, saib peb cov lus qhia ntawmKev daws teeb meem ntau Siemens S7-1500 PLC yuam kevthiabSiemens LOGO! PLC yuam kev codes,ob qho tib si uas suav nrog kev nco- ntsig txog cov lej txhaum cai thiab yuav kuaj dab tsi.

EEPROM Architecture los ntawm Hom: Siemens, Allen-Bradley, Mitsubishi, Schneider, Omron

Tsis yog txhua lub lag luam loj ua haujlwm tsis yog - qhov chaw cia khoom tsis zoo ib yam, thiab qhov no tseem ceeb yog tias koj txhawb cov khoom siv los ntawm ntau tshaj ib lub chaw tsim khoom.

Hom	Txoj kev khaws cia zoo ib yam	Nco ntsoov kho vajtse	Yuav tsum tau roj teeb?
Siemens	Internal nco thiab tshem tau SIMATIC nco daim npav	MMC/SD nco daim npav (S7-1200/1500 series)	Yeem, nyob ntawm CPU thiab cov ntaub ntawv khaws cia xav tau
Allen -Bradley	Tshem tau EEPROM nco module ntawm ntau cov qauv qub qub	1747-M series nco modules (SLC 500)	Feem ntau xav tau rau RTC thiab cov ntaub ntawv khaws tseg
Mitsubishi	Internal program nco ntxiv rau cais cov ntaub ntawv thaj chaw	Ua-hauv flash/EEPROM, qauv- nyob ntawm	Nws txawv ntawm series
Schneider	Program nco thiab cov ntaub ntawv nco tau tswj hwm nyias hauv CPU	Sab hauv uas tsis yog- nco tsis hloov, qee cov qauv txhawb nqa daim npav nco	Nws txawv ntawm tus qauv
Omron	Internal non- nco tsis hloov, nrog lub cim xeeb cassette xaiv ntawm qee cov koob	Roj teeb lossis capacitor- cov qauv thaub qab muaj nyob ntawm cov koob	Nws txawv ntawm series

SiemensCPUs hauv S7-1200 thiab S7-1500 tsev neeg vam khom daim npav nco tau tshem tau rau firmware, cov neeg siv kev pab cuam, thiab cov ntaub ntawv qhia, uas yog vim li cas swapping daim npav feem ntau yog thawj kauj ruam cov kws kho mob thaum kho.Allen -Bradley'sSLC 500 kab yog ib qho piv txwv zoo ntawm EEPROM raws li lub cev sib cais, hloov pauv hloov pauv ntau dua li cov chips soldered rau lub rooj tsavxwm, uas ua rau kev hloov pauv yooj yim dua, tab sis kuj txhais tau tias lub module nws tus kheej tuaj yeem ploj lossis puas hauv thaj teb.Mitsubishi covFX thiab Q series controllers tswj cov kev pab cuam nco thiab cov ntaub ntawv cim xeeb raws li cov chaw sab hauv. Yog tias koj xav mus tob rau hauv yuav ua li cas Mitsubishi teeb tsa lub cim xeeb sab hauv (nws cov ntaub ntawv X, Y, M, thiab D), peb cov ntawv tshaj tawm ua ntej ntawmlub cim xeeb qauv ntawm Mitsubishi PLCnpog qhov programming - theem nthuav dav. Kab lus no tsom mus rau cov khoom siv cia nws tus kheej thiab yuav ua li cas nws ua tsis tau, uas yog qhov sib txawv, thiab ntxiv, lub kaum sab xis.Schneidercontrollers feem ntau khaws cov kev pab cuam thiab cov ntaub ntawv nco hauv nrog tsawg dua kev cia siab rau cov ntawv tshem tawm thoob plaws lawv qhov nruab nrab -ntau kab.Omronsib txawv ntau dua los ntawm cov koob, nrog rau qee cov qauv siv lub roj teeb lossis lub capacitor txhawm rau txuas luv luv thiab lwm tus cia siab ntau dua rau cov chips tsis muaj teeb meem.

RauVFDstshwj xeeb, tib lub logic no siv rau lub cev tsis muaj zog cia: ib qho tsav uas dheev rov qab mus rau qhov kev ua haujlwm nrawm nrawm lossis poob nws cov ntaub ntawv kho tom qab lub zog tshwm sim tau qhia tib yam kev ua txhaum, tsuas yog ntawm qhov sib txawv zaus tsav ntau dua li PLC lossis HMI.

Yuav ua li cas thaub qab thiab Restore PLC lossis HMI Programs

Cov txheej txheem thaub qab los ntawm hom, luv luv

Cov kauj ruam tseeb sib txawv los ntawm cov chaw tsim khoom thiab cov programming software, yog li kho qhov no ua ib qho kev nthuav dav es tsis yog tag nrho cov lus qhia. Rau Siemens controllers, TIA Portal tso cai rau koj khaws tag nrho cov ntaub ntawv ua haujlwm, thiab ntau CPUs cia koj luam cov ntaub ntawv ncaj qha mus rau daim npav nco tau tshem tau raws li lub cev thaub qab koj tuaj yeem khaws cia nyias ntawm lub cuab yeej. Allen-Bradley, Mitsubishi, Schneider, thiab Omron txhua tus muaj cov haujlwm zoo sib xws-txuag kev ua haujlwm los ntawm lawv qhov programming ib puag ncig (Studio 5000, GX Works, EcoStruxure Control Expert, thiab CX{5}}Programmer lossis Sysmac Studio), thiab feem ntau xa tawm qhov kev ua tiav kev ua tiav tam sim ntawd, tsis muaj kev hloov pauv tam sim ntawd.

A laptop connected to a PLC control panel while a technician backs up the program before making changes

Ib luv luv, tswv yim backup niaj hnub

Txuag ib tug tshiab thaub qab tam sim ntawd tom qab ib qho kev pab cuam los yog parameter hloov, tsis nyob rau hauv ib tug taag sij hawm ib leeg.
Khaws cov ntaub ntawv thaub qab tawm ntawm lub cuab yeej nws tus kheej, qhov zoo tshaj plaws hauv tsawg kawg ob qhov chaw (lub zos server thiab huab, lossis hauv zos thiab lub cev tsav).
Sau npe txhua qhov thaub qab nrog hnub tim thiab daim ntawv luv luv ntawm qhov hloov pauv, yog li koj tsis tau twv seb qhov version twg tam sim no thaum muaj xwm txheej ceev.
Periodically paub meej tias ib tug thaub qab ua tau zoo, es tsis xav tias cov ntaub ntawv siv tau vim nws muaj.

Kho, Hloov, lossis hloov kho? Daim Ntawv Qhia Kev Txiav Txim Rau Kev Nco Tsis Txaus

Thaum kho kom zoo

Kev kho yog tsim nyog los txiav txim siab thaum qhov kev ua txhaum raug cais thiab lees paub (piv txwv li, kev ua haujlwm tsis raug uas tshem tawm tom qab rub tawm tshiab thiab rov pib dua), qhov seem ntawm CPU lossis module ua haujlwm ib txwm, thiab cov cuab yeej tsis nyob ze ntawm lub neej lossis twb tau teem sijhawm hloov. Yog hais tias qhov teeb meem daws huv si tom qab reloading qhov kev pab cuam thiab xyuas lub roj teeb, koj yuav tsis xav tau tshiab hardware kiag li.

Thaum hloov yog qhov zoo dua hu

Kev hloov pauv dhau los ua qhov kev xaiv pom tau zoo dua thaum tib lub cim xeeb ua yuam kev rov tshwm sim tom qab kev rov ua kom huv, thaum lub cuab yeej yog tus qauv qub lossis tsis txuas ntxiv qhov kev txhawb nqa thiab cov khoom seem tau nyuaj rau qhov chaw, lossis thaum tus nqi poob qis dua tus nqi sib txawv ntawm kev sib pauv ceev thiab kev sim kho txuas ntxiv. Rau kev sau- lub voj voog kev qaug zog tshwj xeeb, ib zaug ib lub nti tau hnav tawm tiag tiag, tsis muaj nyiaj rov ua dua tshiab kho nws mus tas li.

Original vs. compatible or refurbished memory modules

Yog tias koj txiav txim siab hloov lub cim xeeb los yog daim npav cia, nws tsim nyog nkag siab txog kev lag luam ua ntej koj yuav. Thawj cov chaw tsim khoom lag luam muaj qhov ua tau zoo tshaj plaws thiab kev txhawb nqa firmware, tab sis tuaj yeem tuaj nrog lub sij hawm ntev dua nyob ntawm tus qauv lub hnub nyoog. Tau tshaj lossis kho dua tshiab tuaj yeem yog qhov kev xaiv zoo rau cov khoom qub lossis cov khoom siv tsis tu ncua, tab sis cov khoom lag luam: xyuas qhov chaw tau sim, paub meej tias nws phim koj qhov tseeb CPU firmware kho dua tshiab, thiab yuav los ntawm tus neeg muag khoom uas tuaj yeem sau txog qhov xwm txheej thiab keeb kwm. Ib qho kev tsis sib haum lossis kev sim tsis zoo yog ib qho laj thawj feem ntau "kho sai" hloov mus rau qhov thib ob.

Tsis paub meej tias koj qhov kev ua txhaum tam sim no puas tsim nyog kho lossis yog tias koj xav tau kev hloov pauv kev nco module lossis PLC / HMI chav rau ib hom thiab qauv?Xauj peb PLC, HMI, thiab VFD modules los ntawm homlos yogxa koj cov qauv qhia rau peb rau kev tsocai,thiab peb tuaj yeem pab koj paub meej tias kev sib raug zoo ua ntej koj xaj.

Xaus

Lub sijhawm tom ntej PLC tsis nco qab nws qhov kev pab cuam lossis HMI rov qab mus rau qhov qub tom qab lub zog tshwm sim, tam sim no koj muaj qhov pib uas dhau mus "tsuas yog hloov tag nrho lub vaj huam sib luag." Txheeb xyuas lub moos ua ntej, khiav los ntawm tus kheej- kos npe saum toj no, thiab paub meej tias koj puas cuam tshuam nrog cov teeb meem roj teeb, kev sau tsis raug, lossis lub cim xeeb tiag tiag ua ntej txiav txim siab kho lossis hloov pauv. Ib kauj ruam ntxiv tuaj yeem yog qhov sib txawv ntawm tsib -feeb kho thiab kev txiav txim kho vajtse tsis tsim nyog.

FAQ

EEPROM in Industrial Automation: How PLC, HMI, and VFD Memory Works (and Fails)

Dab tsi yog lub neej ntev ntawm EEPROM hauv PLC?

Feem ntau cov kev lag luam-qib EEPROM raug ntsuas rau kwv yees li 100,000 txog 1,000,000 sau thiab tshem tawm cov voj voog, nrog rau cov ntaub ntawv khaws cia feem ntau teev tseg ntawm 10 txog 20 xyoo lossis ntev dua ib zaug sau. Hauv kev xyaum, feem ntau PLCs yeej tsis mus rau qhov uas sau - lub voj voog txwv tshwj tsis yog lawv tab tom nkag lossis hloov kho cov nqi khaws cia ntau zaus.

Vim li cas kuv PLC poob nws txoj haujlwm tom qab hluav taws xob?

Qhov no feem ntau yog tshwm sim los ntawm kev cuam tshuam lub zog tshwm sim nyob rau hauv nruab nrab ntawm kev sau ntawv, xws li kev rub tawm lossis kev khaws cia sab hauv, uas tuaj yeem tso cov ntaub ntawv tsis tiav lossis puas es tsis yooj yim tshem tawm.

Kuv yuav rov qab tau kuv qhov kev pab cuam PLC ntau npaum li cas?

Tam sim ntawd tom qab txhua qhov kev zov me nyuam lossis kev hloov pauv, tsis yog nyob rau lub sijhawm teem tseg txhua lub lim tiam lossis txhua hli ib leeg. Ib qho thaub qab ua ntej qhov hloov tshiab tsis ntev los no tsis zoo dua li tsis muaj thaub qab txhua.

EEPROM puas tuaj yeem kho, lossis puas yog tag nrho cov module xav tau hloov?

Feem ntau, qhov ua tsis tau tiag tiag lossis hnav - tawm EEPROM nti yuav tsum tau hloov dua li kho. Yog tias reloading qhov kev pab cuam thiab xyuas lub roj teeb daws qhov teeb meem, nws yuav tsis yog lub cim xeeb nti nws tus kheej.

Dab tsi yog qhov txawv ntawm EEPROM thiab flash nco hauv kev lag luam controllers?

Qhov sib txawv tseem ceeb yog tshem tawm granularity: EEPROM erases thiab rov sau cov ntaub ntawv byte byte, thaum flash nco erases hauv cov blocks loj. Tias yog vim li cas EEPROM suits me me parameter cia thiab flash nyhav los lis loj firmware lossis cov ntaub ntawv program.

Yuav ua li cas kuv thiaj paub yog tias kuv xav tau ib tug thawj los yog ib tug sib xws hloov nco module?

Yog tias koj cov cuab yeej siv tam sim no, nquag txhawb nqa qauv, tus qauv qub feem ntau yog qhov kev xaiv yooj yim dua. Rau cov qauv qub lossis raug txiav tawm, lub qhov dej zoo - kuaj tau zoo lossis kho dua tshiab tuaj yeem ua haujlwm tau zoo, tab sis paub meej tias cov khoom siv tau zoo thiab yuav los ntawm tus neeg muag khoom uas tuaj yeem txheeb xyuas qhov xwm txheej.Tiv tauj peb pab neegnrog koj tus qauv CPU, thiab peb tuaj yeem tshawb xyuas kev sib raug zoo rau koj.

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