AB電池1756-BA1AB電池1756-BA1

對于PLC和DCS之間的區(qū)別我們必須有個清晰的界定，別看它們同為控制工具，實際功能卻大相徑庭。所謂分散控制系統(tǒng)(DCS)是融計算機技術、控制技術、通信技術、CRT技術為一體，它主要是針對生產(chǎn)過程進行監(jiān)視、控制、操作和管理的一種控制系統(tǒng)。而PLC叫可編程邏輯控制器。DCS和PLC用相似的地方，就是軟件組態(tài)的基本配置，但是DCS更強大。例如數(shù)據(jù)庫生成，歷史數(shù)據(jù)生成，圖形生成，報表生成和控制組態(tài)等。PLC控制的對象一般都比較簡單，DCS則可以控制企業(yè)的全部設備，成為*樞紐。在生產(chǎn)控制的戰(zhàn)場上它們一為將才，一為帥才，相互之間不存在誰控制誰。PLC可以給信號DCS，反過來DCS也可以給信號于PLC，兩者互相配合，其主從關系主要取決于對設備的要求。

　　PLC的發(fā)展十分迅速，隨之也從技術上帶來了各種挑戰(zhàn)，談到如何突破現(xiàn)階段PLC的發(fā)展瓶頸時，我們應該放寬眼界，思考如何實現(xiàn)一個國家層面的、通用的、共性的、全面的PLC平臺?一個PLC通用平臺，無論是作為信息化產(chǎn)品、控制技術產(chǎn)品還是兩化融合的骨干產(chǎn)品，都應該被重點關注。平臺包括研發(fā)/設計、制造、應用三部分，并給出通用PLC平臺具體產(chǎn)品目標要求(系統(tǒng)硬件、軟件)、功能要求(硬件、軟件的通用性技術指標，性能的*性與可靠性指標)。

PANDUIT PSL-DCJB DATA COMMUNICATION MODULE *SET OF 50* NEW CONDITION IN PKG

RUSSELLSTOLL 8303 RECEPTACLE 30A 250/600VAC 3P 4W NEW CONDITION NO BOX

3M MNG18-6FBX CRIMP FORK TERMINAL 22-18 AWG *SET OF 100* NEW CONDITION IN BOX

MOTOROLA MICROSYSTEMS 84DW6202X01 32 I/O MODULE EXCELLENT USED CONDITION NO BOX

VALBIA DA63 PNEUMATIC ACTUATOR W/MARWIN 8833F SS BALL VALVE NEW CONDITION NO BOX

GOULD SHAWMUT 66003 COPPER POWER DISTRIBUTION BLOCK 600V NEW CONDITION IN BOX

JERGENS M16X2.0 SWIVEL HOIST RING 1900 KG (4,188 LBS) NEW CONDITION NO BOX

SINE A416-1P00 16 PIN RECEPTACLE KIT A4161P00 NEW CONDITION IN PKG

ELECTROCUBE RG1782-6 SURGE SUPPRESSOR *SET OF 2* RG17826 NEW CONDITION NO BOX

GRACO 160-261 OEM VALVE NUTS 160261 *SET OF 5* NEW CONDITION IN PKG

APPLETON EXGJH-28 FLEXIBLE COUPLING 3/4" NPT FEMALE NEW CONDITION NO BOX

WHITE RODGERS S-13605 RELAY MODULE S13605 NEW CONDITION NO BOX

MICRO SWITCH DT-2RV212-A7 ROLLER LEVER SNAP LIMIT SWITCH NEW CONDITION NO BOX

GLENN BENNETT FGE-0298-BVPRE FILTER CARTRIDGE *SET OF 4* NEW CONDITION IN BOX

SUPERIOR BM-131805-1 SS50 MOTOR PLANETARY GEAR DRIVE KIT NEW CONDITION NO BOX

SYLVANIA 5A10N HEAVY DUTY MUSHROOM HD PUSHBUTTON MOMENTARY NEW CONDITION NO BOX

JB WEBB 45245G CIRCUIT BOARD IVS33561 REFURBISHED USED CONDITION NO BOX

OMEGA 233-05 PANELMOUNT PRESSURE GAUGE 0-30 PSI 1/4" NPT NEW CONDITION IN BOX

GRACO 170-249 FACTORY REPLACEMENT CYLINDER PISTON 170249 NEW CONDITION IN PKG

BURNDY YA6C-6L COPPER CRIMP LUG 5/8" HOLE BLUE *SET OF 10* NEW CONDITION NO BOX

GRACO 171-863 FACTORY REPLACEMENT VALVE STEM HOUSING 171863 NEW CONDITION NO BOX

HYDRO-LINE AC-2-08 ROD COUPLER AC208 NEW CONDITION NO BOX

HONEYWELL T631-1020 FARM-O-STAT THERMOSTAT 70-140F NEW CONDITION NO BOX

PRICE PUMP 0118 SERVICE REPAIR KIT NEW CONDITION IN BOX

CANAAN ELECTRIC CSA-A-01S PLUG IN RELAY MODULE CSAA01S NEW CONDITION NO BOX

KINGSTON 112C SAFETY RELIEF VALVE 10 PSI 1/2" NPT NEW CONDITION NO BOX

GRACO 160-240 AIR VALVE PACKING 160240 *SET OF 24* NEW CONDITION IN PKG

CHEMETRON 214H123 W/ W103MPCX-3 RELAY CIRCUIT BOARD USED CONDITION NO BOX

APPLIED ROBOTICS 94500-B1024 REPLACEMENT CONTACT *SET OF 2* NEW CONDITION IN PKG

APPLIED ROBOTICS 94500-B1023 REPLACEMENT CONTACT *SET OF 2* NEW CONDITION IN PKG

APPLIED ROBOTICS 95503-X1005A DIAMOND PINS *SET OF 2* NEW CONDITION IN PKG

APPLIED ROBOTICS 95503-X1007A BUSHINGS *SET OF 3* NEW CONDITION IN PKG

GRACO 161-794 REPLACEMENT PISTON BEARINGS *SET OF 2* 161794 NEW CONDITION IN PKG

SAGINAW CONTROL 580836 MOTOR / CONVEYOR CONTROL UNIT NEW CONDITION NO BOX

DADCO L300X2.0 NITROGEN GAS SPRING L300X20 NEW CONDITION NO BOX

GRACO 204-465 OEM PUMP CAP 204465 NEW CONDITION IN PKG

GRACO C32028 OEM INSULATOR FOR HOT MELT HANDGUN NEW CONDITION NO BOX

GRACO 218-309 OEM REPLACEMENT BEARING 218309 NEW CONDITION NO BOX

GRACO 172-496 FACTORY VALVE INTAKE HOUSING 172496 NEW CONDITION NO BOX

GRACO 617-230 FACTORY REPLACEMENT GASKETS 617230 *SET OF 3* NEW CONDITION IN PKG

GRACO 202-233 FACTORY FLOW CONTROL VALVE 1/4" NPT 202233 NEW CONDITION NO BOX

GRACO 168-211 CONNECTING ROD NUT 168211 FOR BULLDOG MOTOR NEW CONDITION NO BOX

GRACO 220-130 OEM PUMP CONVERSION KIT 2:1 RATIO 220130 NEW CONDITION IN PKG

GRACO 161-793 OEM REPLACEMENT PISTON SEAL 161793 *SET OF 5* NEW CONDITION NO BOX

GRACO 208-937 LOW PRESSURE BALL VALVE 208937 NEW CONDITION IN PKG

GRACO 172-406 OEM CYLINDER CAPS *SET OF 2* 172406 NEW CONDITION IN PKG

GRACO 181-299 REPLACEMENT FLUID NOZZLE 1.20 181299 NEW CONDITION NO BOX

GRACO C03035 OEM DISC ADAPTER NEW CONDITION NO BOX

GRACO 161-795 FACTORY REPLACEMENT PISTON 161795 NEW CONDITION IN PKG

GRACO 166-048 FACTORY REPLACEMENT COUPLING 166048 NEW CONDITION NO BOX

GRACO 171-862 OEM DIAPHRAGM WASHERS 171862 *SET OF 4* NEW CONDITION IN PKG

GRACO 162-305 REPLACEMENT PACKING NUTS 162305 *SET OF 3* NEW CONDITION IN PKG

GRACO 166-377 STAINLESS STEEL GLANDS 166377 *SET OF 2* NEW CONDITION IN PKG

GRACO 164-920 TEFLON CUP SEALS 164920 *SET OF 10* NEW CONDITION IN PKG

GRACO 158-367 REPLACEMENT GROMMETS 158367 *SET OF 24* NEW CONDITION IN PKG

GRACO 178-086 FACTORY REPLACEMENT ROD GUIDE 178086 NEW CONDITION NO BOX

GRACO 159-100 OEM BALL VALVE RETAINERS 159100 *SET OF 12* NEW CONDITION IN PKG

GRACO 110031 REPLACEMENT VEE PACKING 110-031 *SET OF 24* NEW CONDITION IN PKG

GRACO 607-495 FACTORY REPLACEMENT WASHER 607495 *SET OF 10* NEW CONDITION IN PKG

GRACO 177-717 OEM REPLACEMENT SPRING RETAINER 177717 NEW CONDITION IN PKG

GRACO 168210 OEM SHOULDER NUT 168-210 NEW CONDITION NO BOX

STEARNS 1-055-742-07-QG SPRING SET DISC BRAKE NEW CONDITION NO BOX

SIMPSON JW96L PERCENTAGE METER 0-100 PANEL MOUNT USED CONDITION NO BOX

NICHOLSON N300WR THERMOSTATIC STEAM TRAP 5173430 1/2" NPT NEW CONDITION IN BOX

SYLVANIA KPMT-2 CONTACT OPERATING LINK BRACKET NEW CONDITION IN BOX

INGERSOLL RAND 908-P314-3 REPLACEMENT IMPACT ANVIL 3/4" NEW CONDITION NO BOX

CLARK CONTROLLER KPMT-2 CONTACT OPERATING LINK ASSEMBLY NEW CONDITION IN BOX

HYDRO-LINE AC-2-5 ROD COUPLER AC25 NEW CONDITION NO BOX

SEMTECH C0049046-G POWER HYBRID VOLTAGE REGULATOR ASSEMBLY NEW CONDITION NO BOX

HONEYWELL SP670A1001 PNEUMATIC SWITCHING RELAY SP670A-1001 NEW CONDITION IN PKG

ALLEN BRADLEY 40394-472-01 DOOR HARDWARE KIT NEW CONDITION IN PKG

ALLEN BRADLEY 40394-312-51 DOOR HARDWARE KIT FOR 1494V-1 NEW CONDITION IN PKG

GRACO 220585 REPAIR KIT FOR HIGH-FLO PUMP 220-585 NEW CONDITION IN PKG

GRACO 236827 REPAIR KIT FOR MODEL PRO 5500WB 236-827 NEW CONDITION IN PKG

GRACO 178098 SOLVENT CUP 178-098 NEW CONDITION IN PKG

GRACO 161639 VALVE SEAT 161-639 *SET OF 3* NEW CONDITION IN PKG

GRACO C02051 FLANGE NOZZLE 15 DEG ANGLE *SET OF 2* NEW CONDITION IN PKG

GRACO 102637 CAP SCREW 102-637 *SET OF 4* NEW CONDITION IN PKG

GRACO 172131 GASKET 172-131 *SET OF 4* NEW CONDITION IN PKG

GRACO C32253 VALVE STEM *SET OF 4* NEW CONDITION IN PKG

ALLEN BRADLEY 00D156 FACTORY REPLACEMENT COIL 250 VDC NEW CONDITION NO BOX

CUTLER HAMMER 1323-2 COIL 208/220 VAC 60 HZ 13232 NEW CONDITION NO BOX

SNAP-ON TOOLS 9TQ9 POINTER FOR TORQOMETER *SET OF 8* NEW CONDITION NO BOX

SICK 7-020-208 ARC SUPPRESSOR KIT 7020208 NEW CONDITION NO BOX

DEUTSCH MS3470L14-12P CONNECTOR RECEPTACLE MS3470L1412P NEW CONDITION IN PKG

DEUTSCH MS3470L-19S CONNECTOR RECEPTACLE 9534B MS3470L19S NEW CONDITION IN PKG

CLARK TB16-1 2 WIRE COIL TB161 NEW CONDITION NO BOX

FIKE TYPE GD 4" P4904020 GRAPHITE RUPTURE DISC NEW CONDITION IN BOX

DANIEL WOODHEAD 103000A01F150 15' PVC CORD FEMALE 3P 16/3 NEW CONDITION NO BOX

HONEYWELL MICRO SWITCH EXH-AR33 SNAP ACTION LIMIT SWITCH USED CONDITION NO BOX

HONEYWELL MICRO SWITCH EXH-AR3 SNAP ACTION LIMIT SWITCH USED CONDITION NO BOX

WIEDMULLER SAK4 CLIP-ON TERMINAL BLOCKS 4MM *SET OF 6* NEW CONDITION NO BOX

PRO LOGIC B381390 DECODED I/O UTILITY CARD REV 001 NEW CONDITION NO BOX

CAPP 33606 POLARIZED REFLEX SENSOR 15' LEAD NEW CONDITION NO BOX

SQUARE D 40552-262-50 200A GROUNDING LUG NEUTRAL ASSEMBLY NEW CONDITION NO BOX

REES 41150-000 ILLUMINATED RED PUSHBUTTON MOMENTARY 41150 NEW CONDITION IN BOX

WIEDMULLER WS16 FUSIBLE TERMINAL BLOCKS 6MM 250V *SET OF 8* NEW CONDITION NO BOX

KEW G220210D FACTORY REPLACEMENT LEVEL SWITCH NEW CONDITION NO BOX

NAMCO K-109C FACTORY REPLACEMENT COIL 110V 60 HZ K109C NEW CONDITION NO BOX

GOULD SHAWMUT A6D60R TIME DELAY FUSE 60A 600 VAC *SET OF 2* NEW CONDITION NO BOX

GOULD SHAWMUT AJT70 AMP TRAP FUSE 70A 600 VAC 500 VDC NEW CONDITION NO BOX

GORDOS ODC5Q-II INPUT/OUTPUT MODULE INPUT 4-8 VDC 3A NEW CONDITION NO BOX

GOULD SHAWMUT AJT40 TIME DELAY FUSE 40A 600V *SET OF 2* NEW CONDITION NO BOX

MERCOID CONTROL 9-8107SC-8T REPLACEMENT SWITCH 2W 240V NEW CONDITION IN BOX

GOULD SHAWMUT CRS100 TIME DELAY FUSE 100A 600V *SET OF 3* NEW CONDITION NO BOX

FABCO-AIR C-221-0 PANCAKE PNEUMATIC CYLINDER C2210 NEW CONDITION NO BOX

PHOENIX CONTACT 2911676 PLUGGABLE INPUT OPTO COUPLER ST-0E2 NEW CONDITION NO BOX

OIL-RITE SOLENOID VALVE B-1725-1 1/4" NPT 24VDC NEW CONDITION NO BOX

EDYNE 1026 RELAY MODULE *SET OF 3* NEW CONDITION IN PKG

ALLEN BRADLEY 0D156 FACTORY REPLACEMENT COIL 230-250VDC NEW CONDITION NO BOX

KIMWOOD S-14 CYLINDER REPAIR SERVICE KIT S14 NEW CONDITION IN PKG

KIMWOOD S-16 CYLINDER REPAIR SERVICE KIT S16 NEW CONDITION IN PKG

CUTLER HAMMER CHB350 BOLT-ON CIRCUIT BREAKER 50A 3P 240V USED CONDITION NO BOX

CUTLER HAMMER CHB330 BOLT-ON CIRCUIT BREAKER 30A 3P 240V USED CONDITION NO BOX

CUTLER HAMMER CHB320 BOLT-ON CIRC BREAKER 20A 3P 120/240V USED CONDITION NO BOX

EFECTOR E20718 SENSOR BRACKET ACCESSORY KIT NEW CONDITION IN BOX

CUTLER HAMMER CHB315 BOLT-ON CIRCUIT BREAKER 15A 3P 240V USED CONDITION NO BOX

SQUARE D QOB360 CIRCUIT BREAKER 60A 240V 3 POLE Q0B360 NEW CONDITION NO BOX

AMPHENOL 10-825812-01P 2 PIN CONNECTOR *SET OF 5* NEW CONDITION IN PKG

MEAD LTV-MH-B 4-WAY MUSHROOM HEAD PUSHBUTTON 1/8" NPT NEW CONDITION NO BOX

FESTO SMTO-4-PS-S-LED-24B PROXIMITY SWITCH *W/O MNTG NUTS* NEW CONDITION IN PKG

JAMESBURY EW2B LIMIT SWITCH 15A 125/250V WATERTIGHT NEW CONDITION NO BOX

BUSSMANN LP-CC-1-4/10 TIME DELAY FUSE 1-4/10A 600V SET OF 5 NEW CONDITION IN BOX

BUSSMANN SAMI-71 FUSE COVERS W/ INDICATOR 30A 600V SET OF 2 NEW CONDITION NO BOX

CORNELL DUBILIER 422 RELAY 24 VDC 5 PIN NEW CONDITION NO BOX

MINERTIA YASKAWA UGTMEM-O1LB4 MINI SERIES MOTOR UGTMEMO1LB4 NEW CONDITION NO BOX

DUMONT 6SN7GT ELECTRONIC TUBE NEW CONDITION IN BOX

GENERAL ELECTRIC 22D101G2A SOLENOID COIL 230/250 VDC NEW CONDITION NO BOX

WOODHEAD 89290 TURNLOK CORD GRIP CONNECTOR 30A 250V L6-30P NEW CONDITION NO BOX

BURNDY RK152-2 TERMINAL BLOCKS 30A 300V 10 CKT *SET OF 2* NEW CONDITION IN PKG

DUMONT 6W6GT ELECTRONIC TUBE NEW CONDITION IN BOX

SIEMENS W68101 GROUNDING FINGER KIT NEW CONDITION IN PKG

PARKER CV161P20V REPLACEMENT VALVE CARTRIDGE NEW CONDITION IN PKG

AIRPAX APL13-681-4 CIRCUIT BREAKER NEW CONDITION NO BOX

OPTO 22 G4OAC5 OUTPUT MODULE 120V 3A 5V LOGIC NEW CONDITION NO BOX

ALLEN BRADLEY 61-6374 PHOTOELECTRIC ACCESSORY ADAPTER KIT NEW CONDITION IN PKG

SCHNEIDER 170-XTS-001-00 TERMINAL STRIP 088676 NEW CONDITION IN PKG

OHMITE F55J5R0 THIN RESISTOR 55 WATTS 5.0 OHMS NEW CONDITION IN BOX

SQUARE D 9007MS10S000685 COMPACT LIMIT SWITCH 125/250V 3A NEW CONDITION IN BOX

SNAP ON 99LTQP REPLACEMENT POINTER FOR TORQOMETER NEW CONDITION IN PKG

SNAP ON ITQP TORQOMETER REPLACEMENT TORQUE MECHANISM NEW CONDITION IN PKG

OPTO 22 OAC15 I/O RELAY MODULE *SET OF 2* NEW CONDITION NO BOX

WILLSON R73 BELT MOUNTED RESPIRATOR FILTER *SET OF 15* NEW CONDITION NO BOX

ELECTRO SWITCH 31702A ROTARY SNAP SWITCH *DAMAGED* USED CONDITION NO BOX