描述

當(dāng)然，若純?yōu)槟M量的系統(tǒng)，用PLC可能在性能價(jià)格比上不如用調(diào)節(jié)器。這也是應(yīng)當(dāng)看到的。

3用于數(shù)字量控制

實(shí)際的物理量，除了開關(guān)量、模擬量，還有數(shù)字量。如機(jī)床部件的位移，常以數(shù)字量表示。

數(shù)字量的控制，有效的辦法是NC，即數(shù)字控制技術(shù)。這是50年代誕生于美國的基于計(jì)算機(jī)的控制技術(shù)。當(dāng)今已很普及，并也很完善。目前，先進(jìn)國家的金屬切削機(jī)床，數(shù)控化的比率已超過40％～80％，有的甚至更高。

PLC也是基于計(jì)算機(jī)的技術(shù)，并日益完善。故它也完全可以用于數(shù)字量控制。

PLC可接收計(jì)數(shù)脈沖，頻率可高達(dá)幾k到幾十k赫茲?？捎枚喾N方式接收這脈沖，還可多路接收。有的PLC還有脈沖輸出功能，脈沖頻率也可達(dá)幾十k。有了這兩種功能，加上PLC有數(shù)據(jù)處理及運(yùn)算能力，若再配備相應(yīng)的傳感器（如旋轉(zhuǎn)編碼器）或脈沖伺服裝置（如環(huán)形分配器、功放、步進(jìn)電機(jī)），則完全可以依NC的原理實(shí)現(xiàn)種種控制。

高、中檔的PLC，還開發(fā)有NC單元，或運(yùn)動單元，可實(shí)現(xiàn)點(diǎn)位控制。運(yùn)動單元還可實(shí)現(xiàn)曲線插補(bǔ)，可控制曲線運(yùn)動。所以，若PLC配置了這種單元，則完全可以用NC的辦法，進(jìn)行數(shù)字量的控制。

新開發(fā)的運(yùn)動單元，甚至還發(fā)行了NC技術(shù)的編程語言，為更好地用PLC進(jìn)行數(shù)字控制提供了方便。

4用于數(shù)據(jù)采集

隨著PLC技術(shù)的發(fā)展，其數(shù)據(jù)存儲區(qū)越來越大。如OMRON公司的PLC，前期產(chǎn)品C60P的DM區(qū)僅64個(gè)字，而后來的C60H達(dá)到1000個(gè)字；到了CQMI可多達(dá)6000個(gè)字。這樣龐大的數(shù)據(jù)存儲區(qū)，可以存儲大量數(shù)據(jù)。

數(shù)據(jù)采集可以用計(jì)數(shù)器，累計(jì)記錄采集到的脈沖數(shù)，并定時(shí)地轉(zhuǎn)存到DM區(qū)中去。

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(jì)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。

ADVANCED ENERGY ENI DCG-200 PLASMA GENERATOR 20kW#6

Advanced Energy Inverter Focus,AE 3000-000

AE Advanced Energy 12cm MCIS Multi-Cell Ion source gun

Advanced Energy RFG1250 Halo,6000-00467,3155027-010

AE Advanced Energy 94cm Linear Ion Beam Source LIS 84cm

Advanced Energy Circuit Board 1302149 1302149D

DC GENERATOR ADVANCED ENERGY PINNACLE 3152415-107K

Advanced Energy Magnetron MDX-10K Master,2012-041-AB

Advanced Energy Focus High Voltage AE 3006-000

Advanced Energy 3151802-001 AE Rapid-O Toroidal Plasma

ADVANCED ENERGY 3150301-002 CONTROLLER W LINE CORD

ADVANCED ENERGY ENI DCG-200 PLASMA GENERATOR 20kW#1

Advanced Energy PDX 500

AE Advanced Energy Apex 7 10kW Gen.Manual 5708010-D

ADVANCED ENERGY ENI DCG-200 PLASMA GENERATOR 20kW#3

ADVANCED ENERGY ENI DCG-200 PLASMA GENERATOR 20kW#2

Advanced Energy Ovation 35162 3150861 AMAT:0190-16109

AE Advanced Energy MDX-L6

ADVANCED ENERGY ENI DCG-200 PLASMA GENERATOR 20KMASTER

ADVANCED ENERGY ENI DCG-200 PLASMA GENERATOR 20kW#4

Advanced Energy 3151801-001 Remote Plasma Source Rapid

ADVANCED ENERGY ENI DCG-200 PLASMA GENERATOR 20K MASTER

Advanced Energy Verteq AE-6023-0000

ADVANCED ENERGY ENI DCG-200 PLASMA GENERATOR 20kW#5

Advanced Energy Apex 3013 RF Plasma Generator 3kW AE

Advanced Energy RFPP AM-10 Automatch Network 8400003010

DC GENERATOR ADVANCED ENERGY PINNACLE 3152415-107A

ADVANCED ENERGY MDX II 3152264-000 CONTROL UNIT NEW

AMAT 0920-01041 ADVANCED ENERGY RF GNRTR RFG 2000-2V

Advanced Energy 3152194-043 A

Advanced Energy Veeco FSJ4-50B 32’Cable DIN 1340186

ADVANCED ENERGY MDX MAGNETRON DRIVE#MDX20K-MRC

ADVANCED ENERGY MAGNETRON DRIVE MDX-5K-PARTS/REPAIR

Advanced Energy AZX63 RF Match 3155031-014 AMAT

DC GENERATOR ADVANCED ENERGY PINNACLE 3152415-107J

ADVANCED ENERGY MAGNETRON DRIVE#2194-008-01

ADVANCED ENERGY MAGNETRON DRIVE-SLAVE-#3152194-00

ADVANCED ENERGY MAGNETRON DRIVE-SLAVE-#2194-008-0

ADVANCED ENERGY MAGNETRON DRIVE-SLAVE-#2194-008-B

HYDROXYCUT ADVANCED THERMOGENIC LEMONADE ENERGY BOOST

AE ADVANCED ENERGY 3152412-218 MDX PINNACLE 6kW

TESLA TACHYON PENDANT ADVANCED STRENGTHEN ENERGY SHIELD

ADVANCED ENERGY MATCH,RF FIXED 3155054-003B

AE ADVANCED ENERGY PLASMA 3151802-0030 AMAT 0920-0008

AE,ADVANCED ENERGY PDX 1250 PLASMA POWER RF GENERATOR

AE Advanced Energy MDX 500 500W Power Supply

Advanced Energy RFG 3000 3155038-000 E Power supply

NEW Advanced Energy Navigator RF MATCH 3155132-001 D

Advanced Energy MDX 500 M/N 3152261-000F Power Supply

Advanced Energy RFG 1250 RF Generator AE 3155027-000 S

ADVANCED ENERGY PE-1000 PLASMA POWER RF GENERATOR

Advanced Energy MDX 500 Power Supply Warranty Mint

ADVANCED ENERGY PDX 2500 RF SOURCE

AE ADVANCED ENERGY MDX PINNACLE 3152326-100B 6kW SUPPLY

AE ADVANCED ENERGY RF MATCH 3155031-037 NAVIGATOR AMAT

ADVANCED ENERGY Navigator RF Bias Match 3155126-008A

Advanced Energy MDX 20kW/10kW DC Generator/Power Supply

AE ADVANCED ENERGY MDX PINNACLE 3152353-011B Pwr SUPPLY

MDX 1K DC Advanced Energy Power Supply for sputtering

ADVANCED ENERGY PE-2500 GEN,RF1500W100KHZ 3157504-012C

Advanced Energy RFX-600 RF Generator S/N:72806

AE,ADVANCED ENERGY PE-5000 PLASMA POWER RF GENERATOR

ADVANCED ENERGY PE-2500 GEN RF 1500W100KHZ 3157504-012C

Advanced Energy Ideas 1 lot of 5 Light Fixtures

Advanced Energy MDX-L12-650-ONE-YEAR Warranty

AE Advanced Energy RFG 1251 RF Generator 3155107-001 B

Advanced Energy MDX-II 15K

Advanced Energy MDX-II 30K

Advanced Energy RFX-600 RF Generator S/N:150353

ADVANCED SOLAR ENERGY&WIRING APPLICATIONS MANUAL

ADVANCED ENERGY MDX-10K and MDX-20K,lots of 16,used

AE ADVANCED ENERGY RF MATCH 3155031-037 NAVIGATOR AMAT

Advanced Energy RFG-2000-2V-ONE-YEAR Warranty

ADVANCED ENERGY POWER SUPPLY,BESC 1000VDC 1303125 E

Advanced Energy PEP-2500

Advanced Energy FixedMatch RF Match 3155077-001A AMAT

4 used AE Advanced Energy HFV 8000 RF

Advanced Energy MDX 5KW DC Power Supply

Advanced Energy MDX-20K Delta Master 20K 3152194-013 AE

Advanced Energy(AE)3152012-002W MDX Magnatron Drive

ADVANCED ENERGY PDW 2200 AE 3156011 Lam 853-015516-002

ADVANCED ENERGY RFG-1250 HALO

AE Advanced Energy MDX 1.5K Power Supply 3152164-000 K

ADVANCED ENERGY MDX 500 MDX500 POWER SUPPLY DC 3152384

AE Advanced Energy ATN 500 RF Match Network Auto Tuner

Advanced Energy RF Match Assembly#31555094-003

ADVANCED ENERGY MDX 5K DC Power Supply

Advanced Energy PDW-2200-ONE-YEAR Warranty

AE Advanced Energy Pinnacle 6kW Manual 5702195-B

Advanced Energy RFX-600 RF Generator 120VOLT INC CABLES

Advanced Energy AE PDW-600 Low Freq RF Generator

Advanced Energy AE 3155039-000A TCM

AE Advanced Energy MDX-20K Master 3152223-003-Y,used