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西門子 6AR1001-3BG20-0AA0
咨詢熱線--17750626260
dcs和plc的設(shè)計原理區(qū)別較大，plc是由繼電器控制原理發(fā)展起來的，它以存儲執(zhí)行邏輯運算、順序控制、定時、計數(shù)和運算等操作的指令；并通過數(shù)字輸入和輸出操作，來控
制各類機械或生產(chǎn)過程。用戶編制的控制程序表達了生產(chǎn)過程的工藝要求，并事先存入plc的用戶程序存儲器中。運行時按存儲程序的內(nèi)容逐條執(zhí)行，以完成工藝流程要求的操作。plc的cpu內(nèi)有指示程序步存儲地址的程序計數(shù)器，在程序運行過程中，執(zhí)行一步該計數(shù)器自動加1，程序從起始步（步序號為零）起依次執(zhí)行到終步（通常為end指令），然后再返回起始步循環(huán)運算。plc每完成一次循環(huán)操作所需的時間稱為一個掃描周期。不同型號的plc，循環(huán)掃描周期在1微秒到幾十微秒之間。
【誠信經(jīng)營】【質(zhì)量可靠】【進口原裝】【拆包防偽】
【超大庫存】【當天付款】【順豐速運】【歡迎搶購】
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廈門莫格電氣自動化有限公司
張芳（銷售工程師）
電 話：0592-6514182/17750626260
Q Q：177763184
郵 箱：177763184@qq.cm
傳 真：0592-6514751
網(wǎng)址：http://www.mogget.cn
誠信經(jīng)營，質(zhì)量為首，誠信至上，莫格電氣竭誠為您服務(wù)！
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HONEYWELL 8-1/4" PROBE 1/2"NPT 140°F HIGH ACCURACY TEMPERATURE TRANSMITTER H4139
MARTIN 3/8" PITCH 1" WIDE BELTS 5/8" BORE TIMING PULLEY, 30L100 *NEW*
O-Z GEDNEY 3/4" HUB MALLEABLE IRON CONDUIT BODY, LB27 *NEW*
EUCHNER 230V 4A SAFETY LIMIT SWITCH, NZ1RS21319C-GMM?F *NEW*
CAMERON & BARKELY PROFIBUS STATION 8IN/4OUT 1C675PDM841A NIB
BRAD HARRISON 40908 MINI-CHANGE RECEPTACLE, LOT OF 2, NEW IN BAG
HONEYWELL 1/2" NPT MICRO SWITCH, BZE-2AQ *NEW*
HOFFMAN TERMINAL BLOCK BRACKET ASSEMBLY FOR JUNCTION BOX, A12JTMA *NEW*
BRAD HARRISON 250V 4A 4P 5M MICRO-CHANGE FEMALE CORDSET, 804000A09M050 *NEW*
HUBBELL 250V 15A 2P 3W NYLON FACE TWIST-LOCK SINGLE RECEPTACLE, 4560 *NEW*
HALEX 3/4" CLAMP-COMBINATI?ON CONNECTORS, 05703B *NEW LOT OF 32*
FESTO HB 1/4 QS-6 TUBE PUN AND PAN 153451 NIB
TURCK 250V 4A EUROFAST CORDSET, RK 4.5T-5-RS 4.5T/S653
IDEAL 5-900 MHz 2-WAY CATV CABLE SPLITTER, 85-032 *NEW*
BOSTON GEAR 5/8" BORE 1-1/2" O.D. SHAFT COUPLING, FC15-5/8
BRAD HARRISON 8R4006A18A120 MICRO-CHANGE RECEPTACLE 4P MALE, NEW IN BAG SEALED
FESTO 250V 5A 14-176 PSI PRESSURE SWITCH, PEV-1/4-B
SIMPSON 0-2000 RPM PANEL METER, SK 525-447-3 *NEW*
TRERICE 4.5" DIAL 160 PSI 1/4" NPT GLYCERINE FILLED PRESSURE GAUGE, 450LFB *NEW*
DIXON MINI HOSE CLAMPS MH4 7/32"-5/8 5.6-16MM QUANITY 10 NIB
MASTER PNEUMATIC POLYCARBONATE BOWL W GAUGE 5/8"NPT 150SPI 125F NEW
ALLEN BRADLEY PUSH BUTTON GUARDS, 800T-N13 SER. N *NEW LOT OF 2*
THOMAS & BETTS RUSSELLSTOLL 125V 20A EVER-LOK PLUG, 8013U1 *NEW*
GENERAL ELECTRIC 115V 60HZ RENEWAL COIL, 22D164G2 *NEW*
OMRON E3S-AD12 PHOTOELECTRIC SWITCH 10 TO 30V DC NIB
WINTERS INSTRUMENTS 4.5"X1/4" NPT 160 PSI PRESSURE GAUGE, 324 *NEW*
HONEYWELL .5V 3000PSI TRANSDUCER 142439A *NEW*
JOSLYN CLARK 600VAC 10A PM CONTROL RELAY, 5UK8-76 *NEW*
MURR ELEKTRONIK ART NO. 236082 3x575VAC/ 4kW-50/ 60Hz
ILME 2-1/4" NPT CONNECTOR HOODS, 23780, NEW LOT OF 2
INTER
CROUSE-HINDS CONDULET BODY 1/2" FSCC1 1 3/4" FSCC2 NNB
ASHCROFT DURALIFE 2-1/2" 200PSI GLYCERIN PRESSURE GAUGE, 25-1009SW-02L-X?LJ *NEW*
AMPHENOL CONNECTORS PTO6A-10-6S
SIEMENS SIMATIC CONNECTOR 6ES7 392-1AM00-0AA0 NNB
GENERAL ELECTRIC BLACK RECESSED PUSH BUTTON CR104P *NEW*
DALTON 100LB MAX TORQUE 1-3/4" BORE TORQUE LIMITER, OSDC-337 *NEW*
PHD INC. 3-JAW GRIPPER, 7934-01-0101 SERIES 7900
HOFFMAN HOL-TITE OIL TIGHT STEEL HOLE SEAL, A-S150 *NEW SEALED*
ALLEN BRADLEY PRE-WIRED FACTORY SEALED LIMIT SWITCH 802M-NX10 SER. F *NEW*
PHD PNEUMATIC ACTUATOR SLIDE SA06 3X1-J2-R2
AERO 8 CONTACT FEMALE CRIMP CONNECTOR, MS3476L12-8S *NEW*
HOFFMAN 12 BLOCK TERMINAL BLOCK STRIP FOR JUNCTION BOX, A10JBNS *NEW*
CROUSE-HINDS 1/2" NPT TYPE GU 3-PORT OUTLET BOX, 0101639
TURCK 250V 4AMAX WKBE 3T-6/S600 NIB
COOPER CROUSE-HINDS 3/4" NPT STRAIGHT BODY MALE CORD/CABLE FITTING, CGB292 *NEW*
INDUSTRIAL SCIENTIFIC PPM-SULFUR DIOXIDE METER S0261
APPLETON 1 1/4" RIGID PULLING ELBOW NNB
3M GRAY G ELECTRICAL SPRING CONNECTORS, *NEW LOT OF 96*
FAUVER 1000 PSI 2.5" SS 1/4" NPT GLYCERIN FILLED GAUGE, LFG-2-100S *NEW*
COLONIAL ELECTRIC 600VAC OPEN/CLOSE/STOP PUSH BUTTON, 18-3
AMETEK USG 2" 100 PSI 1/4" NPT PRESSURE GAUGE, 5HK58 *NEW*
NADELLA LINEAR SCREW SLIDER, FROR32-2 *NEW*
BEC CONTROLS 125VAC 10A .08-2.0"WC PRESSURE SWITCH, A902-1P-0QA4 *NEW*
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