ACTISLAN-12IP-LAN-12敦煌县
中断的内容有很多种，比如外部中断、通信中的发送和接受中断、定时和计数的时钟中断、还有WDT复位中断等，它们丰富了在处理各种事务时响应种类。这样讲也许你并不能完全理解中断的内部结构和操作顺序，我们做一个小小的例子来说明.


每一个设备总是不会忘记有一个按钮，它也是在我们遇到紧急情况时使用的，那就是急停按钮。当我们遇到人身事故和意外情况时我们只要按下它，机器立即停止所有的操作，并等待处理完意外后再恢复操作。急停按钮连接PLC内部的内部I/O接口上，当按钮给一个外部触发信号时，对I/O进行再次检测，当确认有外部触发信号时，保护现场并将程序计数器自动转到相应的外部I/O中断程序中去，当外部中断程序处理完毕，程序计数器返回到主程序继续工作。有一点可以说明的是我们一般会把急停按钮的外部中断升至别，从而保证安全。


当我们在工作完一个工件时，给PLC一个信号，将PLC的内部计数器加1来计算我们的工作量时，一个简单的计数器能解决问题，当然它们也能够在掉电的情况下保持数据，促使数据不丢失，这也是我们所渴望的。


PLC还具有计数器的功能，当我们在接受一些高速的数据时，这里所说的高速是在在微秒级的数据，比如条码扫描机在不断的扫描数据，数据处理器DSP计算的高速信号等，我们就要采用到计数器来帮助我们进行计数。它在PLC执行程序时一旦发现计数器对应的中断，就会立即放下手上的工作。经过再次编程的梯形图程序说明我们在执行程序时计数器会自动的执行对应的工作，从而将计数器的级别升至高一级别。

  NO.92R4759 Microchip Sst39Vf040-70-4I-Nhe Flash Memory,4Mbit,70Ns,32-Plcc
2X NO.92R4668 Microchip Sst39Lf040-45-4C-Nhe Memory, Flash, 4Mbit, 45Ns, Plcc-32
2X NO.92R4668 Microchip Sst39Lf040-45-4C-Nhe Memory, Flash, 4Mbit, 45Ns, Plcc-32
2X NO.92R4683 Microchip Sst39Lf400A-55-4C-Eke Memory,Flash,4Mbit,55Ns,Tsop-48
2X NO.92R4683 Microchip Sst39Lf400A-55-4C-Eke Memory,Flash,4Mbit,55Ns,Tsop-48
2X NO.92R4698 Microchip Sst39Sf010A-70-4I-Nhe Memory,Flash,1Mbit,70Ns,Plcc-32
2X NO.92R4698 Microchip Sst39Sf010A-70-4I-Nhe Memory,Flash,1Mbit,70Ns,Plcc-32
2X NO.92R4708 Microchip Sst39Sf020A-70-4C-Nhe Memory,Flash,2Mbit,70Ns,Plcc-32
2X NO.92R4708 Microchip Sst39Sf020A-70-4C-Nhe Memory,Flash,2Mbit,70Ns,Plcc-32
2X NO.92R4727 Microchip Sst39Sf040-70-4C-Nhe Flash Memory, 4 Mbit, 70 Ns, 32-Lcc
2X NO.92R4727 Microchip Sst39Sf040-70-4C-Nhe Flash Memory, 4 Mbit, 70 Ns, 32-Lcc
2X NO.92R4744 Microchip Sst39Vf010-70-4I-Whe Memory, Flash, 1Mbit, 70Ns, Tsop-32
2X NO.92R4755 Microchip Sst39Vf040-70-4C-Nhe Flash Memory, 4 Mbit, 70 Ns, 32-Lcc
2X NO.92R4755 Microchip Sst39Vf040-70-4C-Nhe Flash Memory, 4 Mbit, 70 Ns, 32-Lcc
2X NO.92R4877 Microchip Sst39Vf800A-70-4C-Eke Flash Memory,8 Mbit,70 Ns,48-Tsop
2X NO.92R4877 Microchip Sst39Vf800A-70-4C-Eke Flash Memory,8 Mbit,70 Ns,48-Tsop
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3/4" Pipe Elbow 45 Degree 3000 PSI Socket Weld SA182 Gr. 304 SST Lot of 2
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30626          -No Box, Midco SST4901 Elbow 90 deg, 1'' NPT
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30707          -No Box, Midco SST44514F LOT-2 Pipe Elbow 1/4" NPT, SS 304
30W 20mm SST-90 3000k Luminus PhlatLight Led Light Lamp + DC3V~18V 7A LED Driver
30W SST-90 SST 90 Warm White 3000k Led Chip Light Lamp Blub 3.2-3.6V
30W SST90 SST-90 Luminus Warm White 3000K -3500K 9A Led on 20mm Star 1PCS
30W SST-90 Warm White PhlatLight Led Light Lamp 20mm + DC3V~18V 7A LED Driver
30W SST-90 Warm White PhlatLight Led Light Lamp 20mm + DC3V~18V 7A LED Driver
3219 Applied Materials 3690-02281 1/4-20X1.5L-SST/SLVR Hexagon Socket Cap Scrw
3220 6 Applied Materials 3090-01110 1/4-28X3/8-304/316 SST-SLVPT Bolt Screws
33 mic MESH STAINLESS STEEL 400 MESH 12"X12" FILTRATION SS T316 FREE SHIP
367989 ~ BD SST Sterile Blood Collection Tube (x) ~ Lot of 150
39VF040-70-4C-WHE SST Q'TY:2PCS/LOT
3M 2" UNITIZED WHEEL 3/16" ARBOR SST 38 FIN 1" OAL "QTY8" (LOC1337A) TS12
3M 65412SST Post-It Recycled Super Sticky Notes, 3"x3", 12/PK, Tropical Colors
3M 65412SST Super Sticky Pads 3 x 3 Five Tropical Colors 12 90-Sheet Pads Pack
3M 65412SST Super Sticky Tropical Note
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3M Scotch-Brite™ 12" SST Deburring Wheel(ST-WL) Silicon carbide minerals
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4           AMAT 3690-01627 SCR CAP SKT HD 10-24 x 1L HEX SKT SST
4           AMAT 3690-01956 SCRCAP SKT HD 10-24 x 7/8L HEX SKT SST SLVR-PLT
4           AMAT 3880-01007 Washer Flat #8 .3750D x .174ID x .031THK SST
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40mm Constant Current 5A Flashlight LED Driver 1 Mode,6-15v, XHP70 6V SST50
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4pcs SST SST37VF512-70-3C-NHE Many-Time Programmable Flash SST37VF512
4pcs SST29EE020-120-4C-PH SST29EE020 IC 29EE020 SST DIP-32
4pcs SST39SF010A IC SST39SF010 SST           Multi-Purpose Flash Memory
4pcs SST39SF020A IC SST39SF020 DIP-32
4X           Brand NO.83T0757 Ledil C10978_Lily-M Reflector, Medium, Luminous Sst50
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5 Packs Dental TAPERED FINGER SPREADER B Red 25mm SSt DENTSPLY MAILLEFER CE
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5 Packs DENTSPLY K-FILE 008/08 25mm SSt Endodontic Root Canal Files Hand Use
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