描述
PLC是一種監(jiān)控裝置,為了監(jiān)視及控制各項(xiàng)機(jī)電等設(shè)備,當(dāng)然必須與那些設(shè)備有相互溝通的方式.在這些機(jī)電設(shè)備的世界里,人類發(fā)明了各種形式的訊號(hào),以作為它們之間的溝通媒介.目前來說,人們研發(fā)出來的各種偵測(cè)如:溫度,濕度,壓力等自然現(xiàn)象的偵測(cè)元件,都是將所測(cè)得的數(shù)據(jù)轉(zhuǎn)換為線性對(duì)應(yīng)的電流信號(hào),通常是4~20mA.PLC接受這樣的信號(hào),就可依據(jù)電流的大小而知道偵測(cè)器偵得的目前狀況.Pulse(脈沖)信號(hào)是一種形式的接點(diǎn)信號(hào).它的意思是每”達(dá)到條件”時(shí),接點(diǎn)會(huì)閉合一次.例如:某個(gè)轉(zhuǎn)輪式的流量計(jì),可能被設(shè)計(jì)成–當(dāng)它計(jì)算出水流累計(jì)量達(dá)到一度時(shí),就將輸出接點(diǎn)閉合一次.至于所謂的RS232訊號(hào),乃是指一種”通訊”的方式(RS232是一種電氣規(guī)格).以上所提的各種信號(hào)都是電氣形式的訊號(hào).而且每個(gè)信號(hào)都需要獨(dú)立的線路來作傳遞.通訊的方式,則可以把它當(dāng)作設(shè)備用”交談”的方式來做溝通.它們彼此間以一串行的數(shù)值信號(hào)來組成所要傳遞的資料,使得多樣化的資料能夠借由一組通訊線路來達(dá)成.4~20mA算是通用規(guī)格.另外常見的還有0~20mA.另外還有電壓式的:0~5V,1~5V,0~10V,等等.當(dāng)然還有以其他形式來表達(dá)自然環(huán)境中各種”連續(xù)性”數(shù)值的方式,像是:電阻式,以及其他變化應(yīng)用.總之呢,4~20mA的規(guī)格最多.但是,事實(shí)上,4~20mA的電流信號(hào),在進(jìn)入電路板時(shí),還是會(huì)串上一個(gè)250或500歐姆的電阻,而獲得一個(gè)1~5V或2~10V的電壓,然后再由A/D(類比/數(shù)位)轉(zhuǎn)換IC得到一個(gè)對(duì)應(yīng)的數(shù)值.這個(gè)”5V”或”10V”的原因,乃是人們研發(fā)出來的A/DIC最容易且廉價(jià)的關(guān)系而已.至于為何以電流的方式較多,因?yàn)?~20mA控制電流不易因傳送距離較長(zhǎng)而導(dǎo)致訊號(hào)衰減。
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主營(yíng):世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國(guó)AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國(guó)西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(??怂共_):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場(chǎng)輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
REXROTH INDRAMAT DEA4.2 I/O DIGITAL INTERFACE CARD
REXROTH INDRAMAT DEA05.2 PC BOARD
REXROTH INDRAMAT DEF01.1 INCREMENTAL POSITION MODULE
REXROTH INDRAMAT DEP0000116 Item
REXROTH INDRAMAT DG-1604 5000 PPR ENCODER
REXROTH INDRAMAT DIV-03-0100 CABLE ASSEMBLY 3.1 METERS
REXROTH INDRAMAT DIV-04-0502 CABLE ASSEMBLY 3.1 METERS
REXROTH INDRAMAT DKC0.1-040-7-FW SERVO CONTROL
REXROTH INDRAMAT DKC01.1-030-3-FW DRIVE SERVO CONTROLLER DIGITAL AC
REXROTH INDRAMAT DKC01.1-040-7-FW SERVO DRIVE CONTROL
REXROTH INDRAMAT DKC01.3-040-7-FW SERVO DRIVE 3PH 40AMP 700VDC W/PARALLEL INTERFACE
REXROTH INDRAMAT DKC01.3-100-7-FW SERVO DRIVE AC
REXROTH INDRAMAT DKC0132007FW CONTROL
REXROTH INDRAMAT DKC01.3-LK-EAK02 INTERFACE CARD
REXROTH INDRAMAT DKC02.1-040-7-FW SERVO DRIVE 40AMP 700VDC
REXROTH INDRAMAT DKC0230407FM CONTROL
REXROTH INDRAMAT DKC02.3-040-7-FW SERVO DRIVE ECO DRIVE W/SERCOS INTERFACE
REXROTH INDRAMAT DKC0231007FW DRIVE CONTROL
REXROTH INDRAMAT DKC03.1-040-7-FW SERVO CONTROLLER DIGITAL AC
REXROTH INDRAMAT DKC03.3-040-7-FW SERVO DRIVE PROFIBUS DP INTERFACE ECO
REXROTH INDRAMAT DKC0331007FW UNIT
REXROTH INDRAMAT DKC03.3-LK-PBK02 INTERFACE CARD
REXROTH INDRAMAT DKC04.3-LK-ITB01 INTERFACE CARD
REXROTH INDRAMAT DKC0630407FW CONTROLLER
REXROTH INDRAMAT DKC0631007FW DRIVE
REXROTH INDRAMAT DKC06.3-LK-DVN01 INTERFACE CARD
REXROTH INDRAMAT DKC10.3-012-3-MGP-01VRS SERVO DRIVE 12AMP 300VDC MULTI INTERFACE GEN PURPO
REXROTH INDRAMAT DKC1.1-030-3 DIGITAL AC SERVO CONTROLLER
REXROTH INDRAMAT DKC110303FW DRIVE
REXROTH INDRAMAT DKC1.1-040-7-FW SERVO CONTROL AC ECODRIVE
REXROTH INDRAMAT DKC-11-100-7-FW SERVO DRIVE
REXROTH INDRAMAT DKC11.1-040-7-FW DRIVE 700VAC 40AMP
REXROTH INDRAMAT DKC11-3-040-7-FW DRIVE ECO 40AMP
REXROTH INDRAMAT DKC-11-3-100-7-FW SERVO DRIVE
REXROTH INDRAMAT DKR3.1-W100-BE12-01-FW SERVO VECTOR DRIVE W/SERCOS CARD
REXROTH INDRAMAT DKR3.1-W100N-BE12-01 FW SERVO DRIVE 100AMP
REXROTH INDRAMAT DKS01.1-W100A-DL01-00 DIGITAL AC SERVO COMPACT CONTROLLER
REXROTH INDRAMAT DKS011W100ADS010 SERVO
REXROTH INDRAMAT DKS01.2-W100A-DL01 SERVO AMPLIFIER DRIVE
REXROTH INDRAMAT DKS01.2-W100-ADL01 SERVO AMPLIFIER DRIVE
REXROTH INDRAMAT DKS012W100ADL01F DRIVE
REXROTH INDRAMAT DKS-1.1-W100A-DA01-00 SERVO CONTROL DIGITAL 100AMP
REXROTH INDRAMAT DKS-1.1-W100A-DA01-01 SERVO CONTROL DIGITAL 100AMP
REXROTH INDRAMAT DLC1.1-FW DLC CARD
REXROTH INDRAMAT DLF1.1 INTERFACE BOARD
REXROTH INDRAMAT DMD01.1-W082N DRIVE
REXROTH INDRAMAT DMD021W082N DRIVE
REXROTH INDRAMAT DSC1.5-50 SERVO DRIVE
REXROTH INDRAMAT DSC1.6-50-200 SERVO CONTROL
REXROTH INDRAMAT DSC1.7-050-115 SERVO DRIVE
REXROTH INDRAMAT DSC1750 MOTOR CONTROL
REXROTH INDRAMAT DSC1.7-50-115 SERVO CONTROLLER AC
REXROTH INDRAMAT DSC3.1-030-115 SERVO CONTROLLER 115V
REXROTH INDRAMAT DSC3.1-100-115 SERVO CONTROLLER AC
REXROTH INDRAMAT DSC31100115V DRIVE
REXROTH INDRAMAT DSC3.1-150-115 SERVO CONTROLLER
REXROTH INDRAMAT DSC3.1-150-115V SERVO CONTROLLER
REXROTH INDRAMAT DSI-1 COMMUNICATIONS MODULE
REXROTH INDRAMAT DSM02.1-FE MODULE
REXROTH INDRAMAT DSM02.1FW MODULE
REXROTH INDRAMAT DSM02.3-FW MODULE PARAMETER/SOFTWARE
REXROTH INDRAMAT DSM2.1-A11-01.RS PERSONALITY MODULE
REXROTH INDRAMAT DSM2.1-E11-01.RS MODULE
REXROTH INDRAMAT DSM-2.1-FW MODULE
REXROTH INDRAMAT DSM2.1-LNS-0.1RS MODULE
REXROTH INDRAMAT DSM2.1-S11-01.RS MODULE
REXROTH INDRAMAT DSM2.1-SSE-02V07 PERSONALITY MODULE
REXROTH INDRAMAT DSM2.1-SSE-02V08-MS MODULE
REXROTH INDRAMAT DSS01.3 MODULE
REXROTH INDRAMAT DSS01.3-FW MODULE
REXROTH INDRAMAT DSS02.1 INTERFACE MODULE SERCOS
REXROTH INDRAMAT DSS021M CIRCUIT CARD
REXROTH INDRAMAT DSS1 INTERFACE BOARD