Omron yog lub ntiaj teb nto moo chaw tsim tshuaj paus ntawm automation tswj thiab cov khoom siv hluav taws xob, nrog cov khoom siv dav siv hauv kev lag luam automation, khoom siv kho mob, khoom siv hauv tsev, thiab lwm yam. Hauv kev lag luam automation, Omron PLCs (Programmable Logic Controllers) yog ntawm nws cov khoom tseem ceeb, muab kev ntseeg siab thiab yoog raws. Lub zog-tawm cov ntaub ntawv khaws cia yog ib txoj hauv kev tshwj xeeb cov ntaub ntawv khaws cia hauv PLCs uas tiv thaiv cov ntaub ntawv poob thaum muaj hluav taws xob poob. Kab lus no yuav muab cov ncauj lus kom ntxaws txog cov peev txheej, cov yam ntxwv, cov xwm txheej ntawm daim ntawv thov, thiab kev teeb tsa thiab kev siv lub zog- tawm- thaj chaw khaws ntaub ntawv hauv Omron PLCs.
I. Lub tswv yim ntawm Lub Hwj Chim -Tawm -Retentive Data Area
Raws li lub npe txhais tau hais tias, lub zog -tawm - thaj chaw cov ntaub ntawv khaws cia yog hais txog ib cheeb tsam hauv PLC siv los khaws cov ntaub ntawv uas tseem nyob ruaj khov txawm tias lub hwj chim raug txiav tawm. Txoj kev khaws cov ntaub ntawv no yog qhov tseem ceeb rau cov ntawv thov uas xav tau ntev - cov ntaub ntawv khaws cia lossis cov ntaub ntawv rov qab tom qab hluav taws xob tawm.
II. Scope ntawm Lub Hwj Chim -Off Retention Data Area
Hauv Omron PLCs, lub zog -tawm qhov chaw khaws ntaub ntawv feem ntau suav nrog cov ntaub ntawv hauv qab no:
1. Fais fab -Off Retention Registers (RW)
Fais fab-off-cov ntawv sau npe rov qab yog lub zog yooj yim tshaj plaws -off- khaws cov ntaub ntawv khaws cia hauv PLC, siv los khaws cov ntaub ntawv nruab nrab hauv ib qho program. Qhov chaw nyob ntau yam rau lub zog-tawm- cov ntawv sau npe khaws cia feem ntau yog RW0 txog RW9999, tso cai rau khaws cov ntaub ntawv hauv kwv yees li 10,000 sau npe.
2. Fais fab-tawm -Timmers (RT)
Fais fab-off-recentive timers yog lub hwj chim-off-cov ntaub ntawv khaws cia tau siv los tswj lub sijhawm. Txawm tias thaum lub hwj chim raug kaw, lub timer cov ntaub ntawv suav tseem tsis hloov. Qhov chaw nyob ntau yam rau lub zog-tawm- cov sijhawm khaws cia yog feem ntau RT0 txog RT255, tso cai rau tag nrho 256 lub sijhawm khaws cia.
3. Fais fab-Tawm- Cov Counters Retentive (RC)
Fais fab-off-cov txee khaws cia yog lub hwj chim-tawm- cov ntaub ntawv khaws cia cov khoom siv los siv los tswj kev suav. Txawm tias thaum lub hwj chim raug kaw, lub txee tus nqi tseem tsis hloov. Qhov chaw nyob ntau yam rau tsis yog - cov txee tsis hloov pauv yog feem ntau RC0 rau RC255, tso cai rau tag nrho 256 lub txee khaws cia.
4. Tsis yog- Cov Ntaub Ntawv Tsis Muaj Teeb Meem (R)
Tsis yog - cov ntaub ntawv tsis hloov pauv tsis yog - cov ntaub ntawv tsis hloov pauv cov ntaub ntawv khaws cia siv los khaws cov ntaub ntawv loj dua hauv qhov kev zov me nyuam. Qhov chaw nyob ntau yam rau cov uas tsis yog - cov ntaub ntawv tsis hloov pauv yog feem ntau R0 txog R255, tso cai rau khaws tag nrho 256 cov ntaub ntawv thaiv.
III. Cov yam ntxwv ntawm Lub Hwj Chim -Off Data Retention Area
1. Kev ntseeg siab
Cov ntaub ntawv hauv lub zog-tawm cov ntaub ntawv khaws cia thaj chaw tseem tsis hloov pauv txawm tias lub zog raug txiav tawm, uas ua rau muaj kev ntseeg siab ntawm PLC system. Tshwj xeeb tshaj yog hauv cov ntawv thov tseem ceeb, xws li kev tswj cov kab ntau lawm thiab kev saib xyuas cov khoom siv, lub zog -tawm cov ntaub ntawv khaws cia hauv cheeb tsam kom ntseeg tau cov ntaub ntawv ncaj ncees thiab raug.
2. Yooj yim
Omron PLCs 'lub zog-tawm cov ntaub ntawv khaws cia thaj chaw muaj ntau hom ntaub ntawv khaws cia kom tau raws li qhov xav tau ntawm ntau yam kev thov. Cov neeg siv tuaj yeem xaiv lub zog tsim nyog-tawm chav tsev khaws ntaub ntawv raws li lawv cov kev xav tau tshwj xeeb, ua kom cov ntaub ntawv hloov pauv thiab kev tswj hwm.
3. Yooj yim siv
Omron PLCs muaj cov txheej txheem nplua nuj ntawm cov lus qhia thiab kev ua haujlwm uas pab txhawb kev teeb tsa thiab siv lub zog -tawm - thaj chaw khaws cov ntaub ntawv. Cov neeg siv tau yooj yim teeb tsa lub zog- tawm- thaj chaw khaws cov ntaub ntawv siv cov programming software los ua cov haujlwm xws li khaws cov ntaub ntawv, nyeem ntawv, thiab hloov kho.
IV. Daim ntawv thov scenarios rau qhov tsis yog -Volatile Data Area
1. Ntau lawm kab tswj
Hauv kev tswj cov kab ntau lawm, cov ntaub ntawv tsis yog - thaj chaw tsis hloov pauv tuaj yeem siv los khaws cov ntaub ntawv xws li cov kab ntau lawm kev ua haujlwm thiab cov ntaub ntawv ntim khoom. Txawm nyob rau hauv qhov xwm txheej ntawm hluav taws xob hluav taws xob, cov ntaub ntawv no tseem nyob twj ywm, pab nyob rau hauv cov kab ntau lawm rov qab thiab kev kuaj mob.
2. Cov khoom siv saib xyuas
Hauv kev soj ntsuam cov cuab yeej siv, cov ntaub ntawv tsis yog - thaj chaw tsis hloov pauv tuaj yeem siv los khaws cov ntaub ntawv xws li cov cuab yeej ua haujlwm tsis zoo thiab cov ntaub ntawv tsis raug. Cov ntaub ntawv no yog qhov tseem ceeb rau kev saib xyuas cov cuab yeej thiab kev kuaj xyuas qhov tsis raug, thiab lub zog -tawm cov ntaub ntawv khaws cia hauv cheeb tsam kom ntseeg tau tias nws muaj kev ncaj ncees thiab raug.
3. Cov ntaub ntawv kaw lus
Hauv cov ntawv thov uas xav tau ntev - cov ntaub ntawv khaws cia ntev - xws li kev saib xyuas ib puag ncig thiab kev tswj hwm lub zog - lub zog - thaj chaw khaws cov ntaub ntawv tuaj yeem siv los khaws cov ntaub ntawv teev tseg. Cov cav no txhawb nqa cov ntaub ntawv txheeb xyuas thiab kev txiav txim siab- ua, thiab lub hwj chim- tawm ntawm cov ntaub ntawv khaws cia kom ntseeg tau cov ntaub ntawv.
4. Qhov System Recovery
Nyob rau hauv qhov xwm txheej ntawm PLC system tsis ua hauj lwm lossis thaum yuav tsum tau rov pib dua, lub zog -off- thaj chaw cov ntaub ntawv khaws cia tuaj yeem siv los khaws cov ntaub ntawv xov xwm xwm txheej, xws li kev ua haujlwm raws li txoj cai thiab kev tawm tswv yim / tso tawm. Cov ntaub ntawv no pab kom lub kaw lus rov qab sai sai rau nws ua ntej - lub xeev tsis ua haujlwm, yog li txo qis lub sijhawm ua haujlwm.
V. Configuration thiab siv lub hwj chim-Tawm-Retentive Data Area
1. Configuring lub hwj chim-Tawm Retention Data Area
Hauv Omron PLC programming software, cov neeg siv tuaj yeem txhais lub zog -tawm qhov chaw khaws cov ntaub ntawv los ntawm kev teeb tsa lub hwj chim - tawm ntawm kev tuav pov hwm. Cov kauj ruam tshwj xeeb yog raws li nram no:
a. Qhib cov programming software thiab xaiv cov ntaub ntawv khaws cia uas koj xav ua kom muaj zog -tawm tuav.
b. Hauv chav tsev khaws ntaub ntawv cov cuab yeej teeb tsa, kos qhov "Power-Off Retention" kev xaiv.
c. Txuag cov chaw kom ua tiav cov ntsiab lus ntawm lub hwj chim -tawm qhov chaw khaws ntaub ntawv.
2. Siv Lub Hwj Chim -Off Retention Data Areas
Hauv PLC cov kev pab cuam, cov neeg siv tuaj yeem siv ntau cov lus qhia los khiav lub zog -tawm cov ntaub ntawv khaws cia, xws li kev nyeem ntawv, sau ntawv, thiab sib piv. Cov hauv qab no yog qee cov lus qhia siv rau lub zog -tawm cov ntaub ntawv khaws cia hauv cheeb tsam:
a. Kev nyeem ntawv tsis yog- tsis hloov pauv: Siv cov lus qhia DMOV los nyeem cov ntaub ntawv los ntawm cov ntawv sau npe tsis hloov pauv mus rau hauv accumulator lossis lwm lub npe.
b. Sau ntawv mus rau lub npe tsis yog- tsis hloov pauv: Siv cov lus qhia DMOV los sau cov ntaub ntawv los ntawm cov accumulator lossis lwm qhov sau npe rau hauv cov npe tsis muaj -volatile register.