描述
PLC由哪幾個主要部分組成?各部分的作用是什么?
PLC由中央處理器CPU、存儲器、輸入輸出接口和編程器組成。
中央處理器CPU是核心,它的作用是接收輸入的程序并存儲程序。掃描現(xiàn)場的輸入狀態(tài),執(zhí)行用戶程序,并自診斷,
存儲器用來存放程序和數(shù)據(jù);
輸入接口采集現(xiàn)場各種開關(guān)接點的信號狀態(tài),并將其轉(zhuǎn)化成標(biāo)準(zhǔn)的邏輯電平。
輸出接口用于輸出電信號來控制對象;
編程器用于用戶程序的編制、編輯、調(diào)試、檢查和監(jiān)視,還可以顯示PLC的各種狀態(tài)。
歐美品牌停產(chǎn)的,常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域:
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
?
5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列
本特利,英維思,伍德沃德,??怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂,ACSO,力士樂等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。
RADVISION MCU-323/20 Conferecing Unit MCU-323
CISCO IP/VC 3520 VIDEO GATEWAY W/MW-V.35-2T
RADVISION MCU-323/20 CONFERENCING UNIT MCU-323
CISCO IP/VC-3540-MC06 MULTIPOINT CONTROL UNIT IPVC3540
CISCO IP/VC-3540-MC03 MULTIPOINT CONTROL UNIT IPVC3540
CISCO IP/VC-3540-MC10 MULTIPOINT CONTROL UNIT IPVC3540
Performance Technologies CPC4411F CompactPCI Blade
RADVISION L2W-323 PRI GATEWAY L2W-323/4X
RADVISION L2W-323/8X PRI GATEWAY L2W-323P/8X
RADVISION L2W-323P Conferecing Unit L2W-323P/8X
RADVISION L2W-323 Conferecing Unit L2W-323/4E
RADVISION L2W-323V Conferecing Unit L2W-323
RADVISION MCU-323/20 Conferecing Unit MCU-323
Sun Microsystems CP2080-500 Netra CP2080 cPCI Blade
Sun Microsystems CP2300S-650 Telecom blade Netra CP2300
RADVISION VIU-323/1E VIU-323 55421-00001
RADVISION L2W-323/4X L2W-323 55285-00002
DATAKINETICS SPCI4/02 SS7 4 PORTS SEPTEL PCI CARD SPCI4
ERICSSON RAYNET TGM MODULE+ERIPOWER PKC 4131 PI DC/DC
ERICSSON/Tellabs MARTIS SXU-C MODULE ROA 117 3001/2
ERICSSON 2100RU212130 KRC 118 16/1 CELLULAR MODULE
ERICSSON 2100FU1221 KRC 118 17/1 CELLULAR MODULE R2B
ERICSSON ROAH219102/1 MODULE PULLED FROM BFD CHASSIS
ERICSSON ROHA219101/1 MODULE PULLED FROM BFD CHASSIS
ERICSSON ROA219651/1 MODULE PULLED FROM BFD CHASSIS
ERICSSON PKM4610PIDC/DC CONVERTER MINT LOT OF 19
ERICSSON BMR601014 PWR MODULE PULLED FROM BFD CHASSIS
HUAWEI QUIDWAY S1016 SWITCH 16 PORT S1000 SERIES
HUAWEI AOLYNK EP201 BROADBAND SIP PHONE NEW EP201S
HUAWEI RT-1ADSL 1 PORT ADSL OVER POTS MODULE 1ADSL
HUAWEI QUIDWAY AR 18-30 ROUTER BRAND NEW AR 18 30
HUAWEI RT-SIC-1FEA 10/100M ETHERNET INTERFACE CARD
HUAWEI QUIDWAY S1026T SWITCH 26 PORT S1000 SERIES
HUAWEI RT-SIC-2FXO 2 PORT VOICE INTERFACE MODULE
HUAWEI QUIDWAY S2403H SWITCH 24 PORT S2000 SERIES
HUAWEI RT-SIC-1BS 1PORT ISDN BRI S/T INTERFACE CARD
HUAWEI QUIDWAY S1024 SWITCH 24 PORT S1000 SERIES
HUAWEI RT-SIC-1E1-F 1x E1 INTERFACE SIC E1-F CARD
HUAWEI AOLYNK DR814 ADSL2+BROADBAND ROUTER BRAND
HUAWEI QUIDWAY S3026G SWITCH 24 PORT+2x GBIC S3000
HUAWEI 3COM SFP-GE-SX-MM850-A 1000BASE-SX SFP LOT OF 2
HUAWEI QUIDWAY S1024 SWITCH 24 PORT S1000 SERIES
Huawei RT-SIC-2FXS Voice Interface Card new in box
HUAWEI S3952P ETHERNET SWITCH WITH 48 10/100 BASE-TX
Motorola MVME162-210 MVME 162-210 VME Board 01-W3866B
Optibase MGW 5100 MGW5100 Internet Video Broadcasting s
HP PC BLADE SWITCH 142354410000 PCA 410400-001
TOKIO KEISO TM-1000 CONVERTER
LUCENT SUPERPIPE 155 SP155-2S-V35 0710-0292-006
Artesyn PCBA,BAJASPAN,E1,1-860MH,66MHZ CPCI
Packard Cyclone B431201 Storage Phosphor Screen
DIGITAL DECSERVER 900TM 76-200-0001 W/DECHUB ONE
DIGITAL DECSERVER 700 DSRVM-ZC
POWER ONE SLI-48-115 SLI INVERTER 48V SL48-115
MOTOROLA FORCE CPCI-6750 CPCI-6750/128s-400-l 1024-8
Imperative Networks 802 fibre channel switch
Secure Computing SafeWord SecureWire 100 model 220 new
Secure Computing SafeWord SecureWire 2500 525-SYS
VARIAN TV 301 AMAT SQ424 VACUUM PUMP
NETOPTICS 908009 OPTICAL BYPASS SWITCH
NORTEL PASSPORT 8010CO BREAKER INTERFACE PANEL 8010
NORTEL ALTEON EB1404017 AD4 WEB SWITCH DC BRAND NEW
DATACOM LAN SWITCH MX8100BTsl-1071
ECI TELECOM ExLINE 2 NTU 2P DT X.21 MODEM
MOTOROLA SUPER LAN S-LANE1/B1/D/S DC 48V
AUDIOCODES MP-100 MEDIA GATEWAY 8 FXS PORTS MP100B-8S
PARALAN SCSI EXAPNDER BOX MODEL EB1-AAA NEW
SHORE MICROSYSTEMS SM-2400 ETHERNET BYPASS SWITCH MINT
SHORE MICROSYSTEMS SM-2402 MULTIPORT BYPASS SWITCH MINT
DEC VT525 A6 DIGITAL COLOR TERMINAL BASE TESTED VT 525
MRV EM2003-2FO AS44694S-M OPTICAL SWITCH MODULE
RAMIX CP944 Layer 2 Ethernet switch P/N 14-2610E00
LOT OF 4 IBM 23L3337 GBIC 21H9834 Optical Converter