單價(jià): | 面議 |
發(fā)貨期限: | 自買(mǎi)家付款之日起 天內(nèi)發(fā)貨 |
所在地: | 福建 福州 |
有效期至: | 長(zhǎng)期有效 |
發(fā)布時(shí)間: | 2023-12-21 04:11 |
最后更新: | 2023-12-21 04:11 |
瀏覽次數(shù): | 77 |
采購(gòu)咨詢(xún): |
請(qǐng)賣(mài)家聯(lián)系我
|
推送:SP省市縣區(qū)域/直送2023全+境+派+送
福建中立恒自動(dòng)化設(shè)備有限公司
一、摘要 PLC是一種專(zhuān)門(mén)在工業(yè)環(huán)境下應(yīng)用而設(shè)計(jì)的數(shù)字運(yùn)算操作的電子裝置。
它采用可以編制程序的存儲(chǔ)器,用來(lái)在其內(nèi)部存儲(chǔ)執(zhí)行邏輯運(yùn)算、順序運(yùn)算、計(jì)時(shí)、計(jì)數(shù)和算術(shù)運(yùn)算等操作的指令,并能通過(guò)數(shù)字式或模擬式的輸入和輸出,控制各種類(lèi)型的機(jī)械或生產(chǎn)過(guò)程。PLC及其有關(guān)的外圍設(shè)備都應(yīng)按照易于與工業(yè)控制系統(tǒng)形成一個(gè)整體,易于擴(kuò)展其功能的原則而設(shè)計(jì)。在工業(yè)生產(chǎn)的各個(gè)領(lǐng)域,機(jī)械加工企業(yè)為了提高生產(chǎn)效率,采用機(jī)械化流水作業(yè)的方式,對(duì)不同類(lèi)型的零件分別組成的自動(dòng)生產(chǎn)線(xiàn)。隨著產(chǎn)品機(jī)型的更新?lián)Q代,生產(chǎn)線(xiàn)承擔(dān)的加工對(duì)象也隨之改變,這就需要改變控制程序,使生產(chǎn)線(xiàn)的機(jī)械設(shè)備按新的工藝過(guò)程運(yùn)行,而繼電接觸器控制器系統(tǒng)是采用固定接線(xiàn),很難適應(yīng)這個(gè)要求。大型自動(dòng)生產(chǎn)線(xiàn)的控制系統(tǒng)使用的繼電器數(shù)量很多,隨著PLC的應(yīng)用日益普及,其使用方法簡(jiǎn)單,便于掌握,且可靠性,抗干擾性很強(qiáng),自身具有完善的功能.模塊化的結(jié)構(gòu),使其在工業(yè)生產(chǎn)線(xiàn)上的應(yīng)用越來(lái)越廣泛。
發(fā)展趨勢(shì):1.向高速度、大容量方向發(fā)展
為了提高PLC的處理能力,要求PLC具有的響應(yīng)速度和更大的存儲(chǔ)容量。目前,有的PLC的掃描速度可達(dá)0.1ms/k步左右。PLC的掃描速度已成為很重要的一個(gè)性能指標(biāo)。
在存儲(chǔ)容量方面,有的PLC可達(dá)幾十兆字節(jié)。為了擴(kuò)大存儲(chǔ)容量,有的公司已使用了磁泡存儲(chǔ)器或硬盤(pán)。
2.向超大型、超小型兩個(gè)方向發(fā)展
當(dāng)前中小型PLC比較多,為了適應(yīng)市場(chǎng)的多種需要,今后PLC要向多品種方向發(fā)展,特別是向超大型和超小型兩個(gè)方向發(fā)展?,F(xiàn)已有I/O點(diǎn)數(shù)達(dá)14336點(diǎn)的超大型PLC,其使用32位微處理器,多CPU并行工作和大容量存儲(chǔ)器,功能強(qiáng)。
AUTOLOG 29339 PC BOARD FF-E AL PIC
AUTOLOG 30067 PC BOARD AL ORO
AUTOLOG 30067 PC BOARD AL ORO
AUTOLOG 6028785 PC BOARD
AUTOLOG 6028785 PC BOARD
AUTOLOG 6028785 PC BOARD
AUTOLOG 6028785 PC BOARD
AUTOLOG 6028789 PC BOARD
AUTOLOG 6028789 PC BOARD
AUTO-MASKIN 500-1 PCB CIRCUIT
AUTO-MASKIN 500-1 PCB CIRCUIT
AUTO-MASKIN 500-1 PCB CIRCUIT
AUTO-MASKIN 500-1 PCB CIRCUIT
AUTO-MASKIN 500-1 PCB MODULE
AUTO-MASKIN 500-1 PCB MODULE
AUTO-MASKIN 500-1 PCB MODULE
AUTO-MASKIN 500-1 PCB MODULE
AUTOMATIC POWER PCB CARD REV.E
AUTOMATIC POWER PCB CARD REV.E
AUTOMATIC POWER PCB CARD REV.E
AUTOMATIC POWER PCB CARD REV.E
AUTOMATIC POWER PCB CARD REV.E
AUTOMATIC POWER PCB CARD REV.E
AUTOMATION DIRECT D0-05AR DIRECTLOGIC DL05 KOYO PLC UNIT
AUTOMATION DIRECT D3-08TA-1 DISCRETE OUTPUT MODULE 110-220VAC
AUTOMATION DIRECT D4-08B-1 I/O base 8 SLOT PANEL MOUNT
AUTOMATION DIRECT D4-440DC-1 KOYO DIRECT LOGIC 405 CPU UNIT
AUTOMATION DIRECT D4-DCM DATA COMMUNICATION MODULE 232C/422
AUTRonICA AKN-21A/2 PCB CARD 7255-016.0002 AKN21A2
AUTRonICA BD-501 HEAT DETECTOR 000220
AUTRonICA BD-501 HEAT DETECTOR 000220
AUTRonICA BD-501 HEAT DETECTOR 000220
AUTRonICA BD-501 HEAT DETECTOR 000220
AUTRonICA BHH-300 SMOKE DETECTOR HEAD 000
AUTRonICA BHH-31A/EX SMOKE DETECTOR WITH base
AUTRonICA BHH-31A/EX SMOKE DETECTOR WITH base
AUTRonICA BHH-31A/EX SMOKE DETECTOR WITH base
AUTRonICA BHH-31A/EX SMOKE DETECTOR WITH base
AUTRonICA BHH-31A/EXN OPTICAL SMOKE DETECTOR IP44
AUTRonICA BHH-31A/EXN OPTICAL SMOKE DETECTOR IP44
AUTRonICA BHH-500/EX SMOKE DETECTOR HEAD 000
AUTRonICA BJH-31 SMOKE DETECTOR
AUTRonICA BJH-31 SMOKE DETECTOR
AUTRonICA BJH-31/EX SMOKE DETECTOR 89.220
AUTRonICA BJH-31/EX SMOKE DETECTOR 89.220
AUTRonICA BJH-31/EX SMOKE DETECTOR 89.220
AUTRonICA BJH-31/EX SMOKE DETECTOR 89.220
AUTRonICA BJH-33 SMOKE DETECTOR A
AUTRonICA BJH-33 SMOKE DETECTOR A
AUTRonICA BJH-33 SMOKE DETECTOR A
AUTRonICA BJH-33 SMOKE DETECTOR A
AUTRonICA BNB-300/01 INTERFACE MODULE FOR MANUAL CALL POINT BNA-303/02 REV.3
AUTRonICA BS-1346 MAIN TERMINAL BLOCK 04.
AUTRonICA BSB-310A MonITORED OUTPUT MODULE 09.
AUTRonICA BSD-200 LOOP EXTENSION CARD
AUTRonICA BSD-200 LOOP EXTENSION CARD
AUTRonICA BSJ-100 PCB MODULE
AUTRonICA BSJ-100 PCB MODULE
AUTRonICA BSL-100 COMMUNICATION MODULE 72
AUTRonICA BSL-100 COMMUNICATION MODULE 72
AUTRonICA BSL-100 PCB MODULE 72
AUTRonICA BSL-112 PCB CARD SFF-4/24 92
AUTRonICA BSL-112 PCB CARD SFF-4/24 92
AUTRonICA BSR-310A FRONT DISPLAY OPERETOR CARD 72 BSR-310A
AUTRonICA BSS-103A POWER SUPPLY CIRCUIT BOARD 72
AUTRonICA BSS-103A POWER SUPPLY CIRCUIT BOARD 72
AUTRonICA BUS-10 PCB CARD 72
AUTRonICA BUS-10 PCB CARD 72
AUTRonICA BUS-10 PCB CARD 72
AUTRonICA BUS-10 PCB CARD 72
AUTRonICA BUS-10 PCB CARD 72 / FAST SHIP DHL OR FEDEX
AUTRonICA BXA-40 PCB 72 REV 5 / FAST SHIP DHL OR FEDEX
AUTRonICA BZB-500 INTERFACE UNIT
AUTRonICA BZB-500 INTERFACE UNIT
AUTRonICA BZB-500 INTERFACE UNIT
AUTRonICA BZB-500 INTERFACE UNIT
AUTRonICA EN1575A PCB CARD
AUTRonICA EN1575A PCB CARD
AUTRonICA EN1575A PCB CARD
AUTRonICA EN1575A PCB CARD
AUTRonICA KDA-2/R1 ANALOG INPUT BOARD 7252-003.0001
AUTRonICA KDB-1A BINARY INPUT CARD 7252-004.0001
AUTRonICA KDB-1A BINARY INPUT CARD 7252-004.0001
AUTRonICA KDC-3B/87-C3 MICRO PROCESSOR BOARD 7252-074.0001
AUTRonICA KDS-5B POWER SUPPLY PCB UNIT 725
AUTRonICA KMG-200 PCB CARD 7252-019.0003
AUTRonICA KRC-2/6 PCB CARD 72
AUTRonICA KRC-2/6 PCB CARD 72
AUTRonICA KRESTMODUL PCB CARD KMK-200 725 / FAST SHIP DHL OR FEDEX
AUTRonICA KRETSKORTMODUL PCB KME-210/E 725 / FAST SHIP DHL OR FEDEX
AUTRonICA PCB CARD EAS-1 38 / FAST SHIP DHL OR FEDEX
AUTRonICA PCB CARD KMB-201/NL 725 / FAST SHIP DHL OR FEDEX
AUTRonICA PCB CARD KMC-210/2XTBAR 7252-013.0002 / FAST SHIP DHL OR FEDEX
AUTRonICA PCB CARD KMG-200/G 7252-019.0000 / FAST SHIP DHL OR FEDEX
AUTRonICA PCB CARD KRR-1 7225-036.0002 / FAST SHIP DHL OR FEDEX
AUTRonICA PCB KDL-20/D32 72 / FAST SHIP DHL OR FEDEX
AUTRonICA PCB MAS KMA-200/A / FAST SHIP DHL OR FEDEX
AUTRonICA PCB NKA-110 72 E.I.E ALT-101 / FAST BY DHL / FEDEX
Autronica WAS-2000 Fire and Security Test unit was2000 bsd-310 bls-310 bss-310a
AUXILIARY ConSOLE PCB REV A / FAST SHIP DHL OR FEDEX
AVATECH PCB MODULE EM-711-9108E / FAST SHIP DHL OR FEDEX
AVC FCSTD016-C BOARD
AVC FCSTD016-C BOARD
AVC FCSTD016-C BOARD
AVC FCSTD016-C BOARD
AVC PASTDBOARD
AVC PASTDBOARD
AVERY DENNISON A2292 A2292-06 ConTROL BOARD A229206
AVERY DENNISON KW-46-JJ10 AE11M10 A4455-05 ConTROL BOARD
AVTRON A10459 CALIBRATION BOARD
AVTRON A10459 CALIBRATION BOARD
AVTRON A14702 AMPLIFIER ConTROL BOARD
AVTRON A14702 AMPLIFIER ConTROL BOARD
AVTRON A14813 2 BOARD ASSY. A14783
AVTRON A14813 2 BOARD ASSY. A14783
AVTRON A22829 PC BOARD REV.T