AdeptTechnology15350-00002適配器
PLCOPEN將PLC定義為：具有編程能力的固態(tài)控制系統(tǒng)
PLC主要的功能就是通過編程后實(shí)現(xiàn)用戶需要的各種類型的控制功能，前面已經(jīng)說過在沒有PLC之前，大家要通過很多專用電路或者繼電器組來完成控制功能?，F(xiàn)在PLC廣泛的應(yīng)用于幾乎所有的行業(yè)中，我們身邊的絕大多數(shù)產(chǎn)品都是由PLC控制的裝備制造出來的。比方說塑料、包裝、造紙、冶金、石化、電梯、木工、陶瓷等等。
因?yàn)榭刂频姆绞讲煌?，以前大家分為過程控制和順序控制或者離散控制兩類，其中過程控制來源于早期的過程儀表控制，后逐步發(fā)展為DCS，而順序控制來源于早期的繼電器組，后發(fā)展出了PLC，但隨著微電子、軟件、硬件和通信技術(shù)的發(fā)展，目前很多DCS和PLC都采用同樣的或者類似技術(shù)平臺，雙方之間區(qū)別越來越小，大多數(shù)新一代的控制系統(tǒng)都不再區(qū)分DCS或者PLC，不過新一代控制器是否叫PLC還是DCS或者FCS、PAC、NCS，這并沒有得到廣大廠商的認(rèn)同。特別是網(wǎng)絡(luò)和現(xiàn)場總線的發(fā)展，使DCS越來越?jīng)]有單獨(dú)存在的價值，很多的大公司都把新一代的控制系統(tǒng)合并了DCS、PLC、IPC、FCS功能。
為了簡化各種概念，我們根據(jù)項(xiàng)目的大小、項(xiàng)目的重復(fù)度把PLC的應(yīng)用分為工程和OEM兩部分，其中工程主要指造紙、石化、冶金、水泥、大型港機(jī)等項(xiàng)目特征明顯的自動化系統(tǒng)，而OEM主要指各種使用PLC的裝備，如電梯、擠出機(jī)、包裝機(jī)、回流焊、點(diǎn)膠機(jī)、特種車輛等，”這兩大塊構(gòu)成了PLC的主要的市場。



10 Dental Dentsply K-FILE Hand Use Endo Root Canal SST Files Endo 45-80# 25mm AS
10 Dental OCMEGA K-FILE Hand Use Endo Root Canal SSt Files Endo 45-80# 25mm AS
10 Dentsply K-File 31mm Assorted 15-40 SSt Dental Endo Root Canal Hand use Files
10 Dentsply Maillefer Hedstroem 21mm 015-040 SSt Endo Root Canal Hand H-Files
10 Dentsply Maillefer K-File 21mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 21mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 21mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 21mm 015-040 SSt Dental Endo Root Canal Hand Files.
10 Dentsply Maillefer K-File 21mm 015-040 SSt Dental Endo Root Canal Hand Files.
10 DENTSPLY MAILLEFER K-FILE 21mm 045-080 SSt Endo Root Canal Hand File A+++
10 Dentsply Maillefer K-File 25mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 015-040 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 015-040 SSt Dental Root Canal Hand Files GD
10 Dentsply Maillefer K-File 25mm 045-080 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 045-080 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 045-080 SSt Dental Endo Root Canal Hand Files
10 Dentsply Maillefer K-File 25mm 045-080 SSt Dental Endo Root Canal Hand Files.
10 Dentsply Maillefer K-File 25mm 045-080 SSt Dental Endo Root Canal Hand Files.
10 Dentsply Maillefer K-Files 21mm 015-040 SSt Dental Endo Root Canal Hand V-1
10 Dentsply Maillefer K-Files 25mm 015-040 SSt Dental Endo Root Canal Hand SUPER
10 Dentsply Maillefer K-Files 25mm 015-040 SSt Dental Endo Root Canal Hand SUPER
10           AMAT 3300-01134 backing ferrules, 3/8T sst
10           AMAT 3690-01942 SCRCAP SKT HD 1/4-20 x 3/4L HEX SKT SST SLVR-PL
10           Lasco 1/2" SCH 40 TEE SST Socket X FIPT 1 bag of 10 Made in USA
10           SST 6203Z C3 BALL BEARINGS NNB *MAKE OFFER*
10 Pack DENTSPLY MAILLEFER K-FILE 31mm #025 SSt Endo Root Canal Hand File
10 Pack DENTSPLY MAILLEFER K-FILE 31mm #030 SSt Endo Root Canal Hand File
10 Pack DENTSPLY MAILLEFER K-FILE 31mm #035 SSt Endo Root Canal Hand File
10 Pack DENTSPLY MAILLEFER K-FILE 31mm #040 SSt Endo Root Canal Hand File
10 Pack Dentsply Maillefer K-File Endo Dental Root Canal Files #010 21MM SST LDT
10 Packs Dental Endo K-FILE 006 Pink 25mm SSt DENTSPLY MAILLEFER CE          
10 Packs Dental Endo K-FILE 010 Purple 25mm SSt DENTSPLY MAILLEFER CE
10 Packs Dental Endo K-FILE 010 Purple 25mm SSt DENTSPLY MAILLEFER CE DBM
10 Packs Dental Endo K-FILE 010 Purple 25mm SSt DENTSPLY MAILLEFER CE D-Ss
10 Packs Dental Endo K-FILE 010 Purple 25mm SSt DENTSPLY MAILLEFER CE Hand 100%
10 Packs Dental Endo K-FILE 010 Purple 25mm SSt DENTSPLY MAILLEFER CE Hand 100%
10 Packs Dental Endo K-FILE 010 Purple 25mm SSt DENTSPLY MAILLEFER CE Super
10 Packs Dental Endo K-FILE 010 Purple 25mm SSt DENTSPLY MAILLEFER CE V-1
10 Packs Dental Endo K-FILE 010 Purple 25mm SSt DENTSPLY MAILLEFER CE VIP
10 Packs Dental Endo K-FILE 010 Purple 25mm SSt DENTSPLY MAILLEFER CE WLD
10 Packs Dental Endo K-FILE 045-080 21mm Assorted SSt DENTSPLY MAILLEFER Files
10 Packs Dental Endo K-FILES 010 Purple 25mm SSt DENTSPLY MAILLEFER CE SUPER          
10 Packs Dental Endo K-FILES 010 Purple 25mm SSt DENTSPLY MAILLEFER CE V-1
10 Packs Dental MACDENT K-File 010 Hand Use Endodontic Root Canal File SST 25mm
10 Packs Dental MACDENT K-File 030 Hand Use Endodontic Root Canal File SST 25mm
10 PACKS Dentsply Dental Endodontic K-files Sst Assorted #045-080 25mm
10 PACKS Dentsply Dental Endodontic K-files Sst Assorted #045-080 25mm V-1
10 Packs DENTSPLY HEDSTROEM #006 21mm SST Endo Root Canal H-File Hand Use V-1
10 Packs DENTSPLY HEDSTROEM #06 21mm SST Endo Root Canal H-File Hand Use Super
10 Packs DENTSPLY HEDSTROEM 21mm 006 SSt Endo Root Canal H-File Hand Use AS