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PLC在程序执行阶段：按用户程序指令存放的先后顺序扫描执行每条指令，经相应的运算和处理后，其结果再写入输出状态寄存器中，输出状态寄存器中所有的内容随着程序的执行而改变。
输出刷新阶段：当所有指令执行完毕，输出状态寄存器的通断状态在输出刷新阶段送至输出锁存器中，并通过一定的方式（继电器、晶体管或晶闸管）输出，驱动相应输出设备工作。
Napa 1816 Gold Hydraulic Filter
Napa 1826 Hydraulic Filter
Napa 613 Stick Hose Radiator Coolant 2 ID 3 Foot Length
Napa 813-1235 Steel Brake Line 5/16 OD 60 L 5/16 Fittings
NAPA IC18 Ignition Coil Replacement 12V
Napa NBH 632 FleetFlex Gold Coolant Stick Hose 1.5 ID 3' Length
Napa/GE 4419 Incandescent Sealed Beam Lamp 35W 12V PAR 46 Lot of 8
Napa/GE 4419 Incandescent Sealed Beam Lamp 35W 12V PAR 46 Lot of 8
Nason SP-17B-30F Low Pressure Switch Snap action 1/4 NPT
NATIONAL 2-3/8 Morse Taper No.5MT Shank Drill Bit 16-1/2 OAL
NATIONAL 2-3/8 Morse Taper No.5MT Shank Drill Bit 16-1/2 OAL
National 473239 Oil Seal 1.875 ID 3 OD
National Detroit 2-23/64 Morse Taper No.4MT Shank Drill Bit 15 OAL
National MFG Size 212 1 Long 3/16 Eye Screw Eyes Steel/Zinc Plated Box of 100
National Scientific C4015-99 Amber Glass Shell Vial 8x40mm 1.25mL Box of 200
NCC Q1F-00005-311 Solid State Relay Module National Controls Corporation
Nemicon RFH1024-22-1M Optical Shaft Endcoder Has Some Shaft Fretting
Nemicon RFH1024-22-1M Optical Shaft Endcoder Has Some Shaft Fretting
Neo-Dyn 200P16C3 Internal Adjustment Pressure Switch 1/4 NPT Port
Neptune 002719 Series 560 to 568 Pump Spare Parts Rebuild Kit
Neptune 100078 Valve Ball Pump Repair replacement Part Lot of 4
Neptune 100078 Valve Ball Pump Repair replacement Part Lot of 4
Netsuren 30mm single open end metric wrench 12 OAL
Holland 47135972 Filter OEM Element (Outer)
Holland 47135972 Filter OEM Element (Outer)
age Industries 5611844 CAM operated coupling insert type-F 1-1/4 MNPT
co 12B 1-3/8 &1-1/2 Wire Rope Sling Bottom Saddle & Corner Protector Lot of 4
comer TPG322 Carbide insert grade-NT5 Style 25764322 8 pcs
en CNC Fixed-Turning Valve Seat Cutting Tool Holder Cylinder Head
port Electronics MTX-J09 Thermocouple J transmitter -0to250°c
Nexen Horton Air Champ Hub 856100 599291 NIB
NFS1254A Phenolic Non-metal Spur Gear 12 Pitch 14.5 Deg Pressure Angle 54-Teeth
Niagra Cutter 35ZA-844 4 Side Mill Milling Cutter 1 Arbor 5/16 Wide
Nile RH20 Air Shot Hammer Pneumatic Tool
Nilfisk 61390600 GS83 & GB733 Industrial Vacuum Cleaner Main Filter Cotton
Nippon Chemi-Con 600442-31TS Capacitor 36DA 47000uF 50VDC 9745L 33 UCC +95 C
Nissan P5-9MH62 Forklift Engine K25 195533 Intake Manifold Assy 93G20-31030
No 40 Single Strand Stainless Steel M1 Attachment Roller Chain 10' Hollow Pin
No.1MT Adaptor Collet For No.2 Magic Chuck Collis Bendix Modern 63921 USA
No.3MT Adaptor Collet For No.2 Magic Chuck Bendix Collis Modern 2-AA-3 USA
Nopak 3X5 E Pneumatic Air Cylinder 3 Bore 5 Stroke Clevis Mount Model
Nord SK92372AZDSH Right Angle Hollow Shaft Bevel Gearbox Speed Reducer 49.73:1
Nordson 1056358A DuraBlue L Glue Adhesive Melter Drive Motor 30:1 Ratio 55.3 RPM
Nordson 295971A 295971 |
