描述
對(duì)于一個(gè)自動(dòng)化工程(特別是中大規(guī)模控制系統(tǒng))來(lái)講,選擇網(wǎng)絡(luò)非常重要的。首先,網(wǎng)絡(luò)必須是開(kāi)放的,以方便不同設(shè)備的集成及未來(lái)系統(tǒng)規(guī)模的擴(kuò)展;其次,針對(duì)不同網(wǎng)絡(luò)層次的傳輸性能要求,選擇網(wǎng)絡(luò)的形式,這必須在較深入地了解該網(wǎng)絡(luò)標(biāo)準(zhǔn)的協(xié)議、機(jī)制的前提下進(jìn)行;再次綜合考慮系統(tǒng)成本、設(shè)備兼容性、現(xiàn)場(chǎng)環(huán)境適用性等具體問(wèn)題,確定不同層次所使用的網(wǎng)絡(luò)標(biāo)準(zhǔn)。?自從第一臺(tái)PLC出現(xiàn)以后,日本、德國(guó)、法國(guó)等也相繼開(kāi)始研制PLC,并得到了迅速的發(fā)展。目前,世界上有200多家PLC廠商,400多品種的PLC產(chǎn)品,按地域可分成美國(guó)、歐洲、和日本等三個(gè)流派產(chǎn)品,各流派PLC產(chǎn)品都各具特色,如日本主要發(fā)展中小型PLC,其小型PLC性能先進(jìn),結(jié)構(gòu)緊湊,價(jià)格便宜,在世界市場(chǎng)上占用重要地位。
產(chǎn)品承
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢(shì)價(jià)格,大量現(xiàn)貨。
主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌:ABB???,AB??,GE,FOXBORO,本特利,英維思,伍德沃德,西屋,瑞恩,施耐德,西門(mén)子,摩托羅拉,安川。力士樂(lè)。ACSO,橫河等進(jìn)口品牌。 專(zhuān)業(yè)銷(xiāo)售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專(zhuān)業(yè)銷(xiāo)售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家
NEW BAILEY PRESSURE TRANSMITTER 0-4500PSI PTPGQ72020E00
NEW BAILEY PRESSURE TRANSMITTER 0-2000PSI PTPGQ72020E00
SUPER LINE SF-JRV 3 PH MOTOR W/EMERWORM CSM370 REDUCER
WEIR 1-1/2″ ITT DIA FLO RUBBER LINED DIAPHRAGM VALVE
NEW IMO HYDRAULIC PUMP 3E 3240/245 D3EIC-95D CCW 1″NPT
SEW-EURODRIVE 0.5HP MOTOR 1700RPM 460V W/ GEAR REDUCER
FISHER RACK MOUNT POWER SUPPLY CONVERTER CP6121X1-A2
HUB BOSS FLUID COUPLING #3SCR25R #2518-8185
RELIANCE ELECTRIC 3HP DC MOTOR 1600RPM 500V HORSEPOWER
BABCOCK WILLCOX PUMP BUSHING 23079 18/20 BRONZE GLAND
GEMCO AMETEK 951AC10198XXE LINEAR TRANSDUCER 951
GE FANUC PC INTERFACE MODULE BOARD IC660ELB906M
BALDOR 10HP AC MOTOR T FRAME 3500RPM 460V 3PH M3711T
DYNAC KONECRANES AC DRIVE DAV0075NFL1N1P1 500V 7.5HP
CANIMEX MODEL CC WORM GEAR REDUCER 30:1 RATIO SIZE 6
PARKER HYDRAULIC DIRECTIONAL PILOT VALVE D61VW9C6NYCF4
PARKER CUSTOM SERVO SERVO MOTOR MPM892FRMM-AMB 39.6KE
LOT 2 JOHNSON CONTROLS ROTARY JOINT UNION 250LB 3/4″NPT
FISCHER & PORTER MAG X 10D1419A MAG FLOW METER TUBE
FOXBORO STAINLESS DIAPHRAGM EXTENSION 6″ A092678 13FEA
2 NEW ROSEMOUNT PH SENSOR 0399-05 USE 1181 TRANSMITTER
JOSLYN CLARK DEFINITE CONTACTOR 5DP3-11100 110A
FISHER ROSEMOUNT POWER SUPPLY CONVERTER DM6001X1-GA1
MICROMATIK ERN1387 2048 SINE-INCREMENTA?L ENCODER SIEGEN
AES BRASS CYLINDER 3 1/2″ BORE 3/4″ N2530 M-195-1 1 3/8
GORATOR DORR OLIVER TYPE GN ROTOR SHAFT ASSEMBLY
CUTLER-HAMMER D725 INDUSTRIAL COMPUTER D725SVPP16SDWNT
NEW AVTRON PULSE GENERATOR ENCODER M485L 240PPR M485-L
GE GENIUS 1 CHANNEL BUS CONTROLLER E 90-70 IC697BEM731T
NEW HONEYWELL SCT 3000 SMARTLINE CONFIGURATION TOOLKIT
REXNORD STRAIGHT BORE HUB 80 SHRB STD 7300710 FOR ES80
WESTINGHOUSE 20HP AC MOTOR T FRAME 1760RPM 575V 3PH 4P
VALMET FPUS A413346 BACKUP STANDBY BATTERY 250W 110VAC
ACTREA BALL VALVE 1/2″ PNEUMATIC ACTUATOR + SWITCHPAK
FLOWSERVE NT3000 TRANSDUCER VALTEK POSITIONER XL 150PSI
NEW FISHER PLUG & STEM ASSY 1V6584X0042 6″ ED ET EAD
ALLEN BRADLEY 520VE-XXX EO SIZE 4 MULTI 2 SPEED STARTER
SQUARE D 7T145HDIT TRANSFORMER 7.5KVA 3PH 460V/266V 9A
ALLEN BRADLEY VACCUM CONTACTOR 1502-V4DBDA-1 2500-7200V
ALLEN BRADLEY 1370-RFS REGENERATIVE FIELD SUPPLY 15A AB
PLC模塊,可編程控制器,CPU模塊,IO模塊,AI模塊,通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家