7AM351.70億佳有
中斷的內(nèi)容有很多種，比如外部中斷、通信中的發(fā)送和接受中斷、定時和計數(shù)的時鐘中斷、還有WDT復(fù)位中斷等，它們豐富了在處理各種事務(wù)時響應(yīng)種類。這樣講也許你并不能完全理解中斷的內(nèi)部結(jié)構(gòu)和操作順序，我們做一個小小的例子來說明.


每一個設(shè)備總是不會忘記有一個按鈕，它也是在我們遇到緊急情況時使用的，那就是急停按鈕。當(dāng)我們遇到人身事故和意外情況時我們只要按下它，機器立即停止所有的操作，并等待處理完意外后再恢復(fù)操作。急停按鈕連接PLC內(nèi)部的內(nèi)部I/O接口上，當(dāng)按鈕給一個外部觸發(fā)信號時，對I/O進行再次檢測，當(dāng)確認(rèn)有外部觸發(fā)信號時，保護現(xiàn)場并將程序計數(shù)器自動轉(zhuǎn)到相應(yīng)的外部I/O中斷程序中去，當(dāng)外部中斷程序處理完畢，程序計數(shù)器返回到主程序繼續(xù)工作。有一點可以說明的是我們一般會把急停按鈕的外部中斷升至別，從而保證。


當(dāng)我們在工作完一個工件時，給PLC一個信號，將PLC的內(nèi)部計數(shù)器加1來計算我們的工作量時，一個簡單的計數(shù)器能解決問題，當(dāng)然它們也能夠在掉電的情況下保持?jǐn)?shù)據(jù)，促使數(shù)據(jù)不丟失，這也是我們所渴望的。


PLC還具有計數(shù)器的功能，當(dāng)我們在接受一些高速的數(shù)據(jù)時，這里所說的高速是在在微秒級的數(shù)據(jù)，比如條碼掃描機在不斷的掃描數(shù)據(jù)，數(shù)據(jù)處理器DSP計算的高速信號等，我們就要采用到計數(shù)器來幫助我們進行計數(shù)。它在PLC執(zhí)行程序時一旦發(fā)現(xiàn)計數(shù)器對應(yīng)的中斷，就會立即放下手上的工作。經(jīng)過再次編程的梯形圖程序說明我們在執(zhí)行程序時計數(shù)器會自動的執(zhí)行對應(yīng)的工作，從而將計數(shù)器的級別升至高一級別。

OMRON NT600S-ST121B-EV3    NT600SST121BEV3
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OMRON, NT20S-ST121B-EV3, (NT20SST121BEV3), DISPLAY,            
ONE           OLD STOCK BARDEN PRECISION BEARING 205SST5 G-6 K 19M
ONE           OLD STOCK BARDEN PRECISION BEARINGS 204SST5 G-6 K 7 A
OPW 3920-0301 - 3" FAB SST Swivel Joint Buna-N Main Felt Dust Seal
OPW Flowline Kamlok 3" 150 B16 F304-L A182 Twin-Kam 94078 633-DV 3-SST 634-A
OPW Kamlok Autolok Quick Coupler 3" 733-DL SST Female NPT
ORANGE RESEARCH 2221FGS-1C-2.5L-52 FLOWMETER GAUGE SST
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OSI ANDREWS SPINAL SURGERY TABLE SST-3000
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OSI ORTHOPEDIC SYSTEMS 5820 SST-3000 ANDREWS SPINAL SURGERY TABLE OR HYDRAULIC
OSI SST-3000 Andrews Spinal Surgery / O.R Table W/ Side Arms & Attachments
OSI SST-3000 ANDREWS SPINAL SURGERY TABLE 5820 ORTHOPEDIC SYSTEMS
OSI SST-3000 MANUAL O.R. (OR - OPERATING ROOM) ANDREWS SPINAL SURGERY TABLE !
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Pacific Pumps Spacer Sleeve A20835, NH63715144 SST
PACK OF 6 MICROAIRE K-02 SST BUR, EGG 10 flutes X 4mm EXP 2017
Pall 4HD4886-2301 N2 Filter             for PX02SST， BP01SST
PANDUIT - SST1.5M-M - CABLE TIE; RELEASABLE; 140MM L; NYLON; NAT; 18LB; PK1000
PANDUIT - SST1M-M0 - STA-STRAP RELEASABLE CABLE TIES
PANDUIT - SST2S-M - CABLE TIE; RELEASABLE; 172MM L; NYLON; NATURAL; 50LB; PK1000
Panduit Cable Tie PN SST3I-M, Pkg of 1000 each,          -OLD-STOCK
Panduit Nylonties SST1M-M And Mounts TM154-C
PANDUIT SST1.5M-M CABLE TIE, RELEASABLE, 140MM L, NYLON, NAT, 18LB, PK1500
Panduit SST3S-C Sta-Strap Cable Tie Nylon 6.6 Standard Cross Section Straight
PARKER - NON - VALVED COUPLER - SST-3M - 3/8" 18 NPT - Lot of 4 -           in Box
PARKER 01.75DSR1.000 AIR CYLINDER, 6.6IN SST, 250PSI 17 BAR FREESHIPSAMEDAY
Parker 40mm Bore 100mm Stroke Actuator w/ Built In Cylinder SST-1001T-AS NNB
PARKER 6M-V6LR-SS GENERAL PURPOSE NEEDLE VALVE, SST
PARKER COUPLING COMPRESSION CONNECTOR SST-4 SST SERIES 1" ID.            
Parker Hannifin Assortment Femal Adapter GBZ-SS-T-F Male Adapter FH4BZ-22 Tube
Parker High Flow SS Quick Connect Coupler SST-4 1/2" FNTP NOS
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PARKER HYDRAULIC COUPLING SST N4M NIB BOX OF 4
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PARKER PNEUMATIC HYDRAULIC P1C-4PRC P1C-4PRS P1C-4PRF SST-4 PARTS LOT
PARKER PSK-SST50 PISTON SEAL KIT,          
Parker SST 60 Series Hydraulic Quick Coupling Female Coupler 1-1/2"NPTF
PARKER SST-2M Coupler Body, 1/4-18, 1/4 In. Body, 303 SS
PARKER SST-2M Coupler Body, 1/4-18, 1/4 In. Body, 303 SS           !!!
PARKER SST-2M NON-VALVED COUPLER          
PARKER SST-3 Coupler Body, 3/8-18, 3/8 In. Body, 303 SS
PARKER SST-3M Coupler Body, 3/8-18, 3/8 In. Body, 303 SS
PARKER SST-4 Coupler Body, 1/2-14, 1/2 In. Body, 303 SS
PARKER SST-4M Coupler Body, 1/2-14, 1/2 In. Body, 303 SS
PARKER SST50-251TK-A Automation Actuator
PARKER SST50-501TK-A Automation Actuator
Parker SST50-503TE-A, Slide, AIR,          
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Parker SST63-1003T-A19 Pneumatic Cylinder 145psi            
PARKER SST-6M Coupler Body, 3/4-14, 3/4 In. Body, 303 SS
PARKER SST-8 AND SST-N8 QUICK COUPLE HYDRAULIC FITTING BOTH ENDS 1" FNPT
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PARKER SST-N8M Coupler Body, 1-11-1/2, 1 In. Body, 303 SS
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Parker ST Series Straight - Thru 1"inch Couplers #SST-6 (Qty of 2), 97E-4
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PCB CARD / PC7062 PCIP-SST 14105 REV.4
Peak (Est. 2000pcs) SST310-T1 16248744 D180 P9007 W08/2 Siliconix
PHOENIX CONTACT SST-CES        SSTCES
Pitco - B2005302 - Assembly Sst Bkup Sg Contl Box
Pitco - PP10574 - Ball 1/2 Sst Apollo Vlv
Pitco A4510902-C CTH SUBG SST with R/G
PITCO CONTROL BOX ASSY SST PRIM SG B2005301          
PN: 75SST240 (1 Piece Lot)
PN: SST1.5M-M (1 Piece Lot)
Powell 1/2, SS T-316, Needle Globe Valve Fig 1976, 3000 WOG
Powerseal All Stainless Pipe Repair Clamp Bolt Type SST 3121AS Check-O-Seal
POWERSEAL MODEL 3121CS BOLT TYPE SST PIPE REPAIR CLAMP 6" x 12"
PP&S INC 28518801 P02877-00 316SST 5195 ROTOR          
PREFILTER FOR SST-2000 20-3/8 X 13 X 5/16
PRG402-8SS POP, JAWS [2 PC SET] FOR SST RIVETS,
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PRO POWER - SST-008-2050-CLR - HEAT SHRINK TUBING; 3.175MM ID; FEP; TRANS; 100F
PRO POWER - SST-012-2025-CLR - HEAT SHRINK TUBING; 4.776MM ID; FEP; TRANS; 50FT
PRO POWER - SST-016-2025-CLR - HEAT SHRINK TUBING; 6.35MM ID; FEP; TRANS; 50FT;
PRO POWER - SST-032-2010-CLR - HEAT SHRINK TUBING; 12.7MM ID; FEP; TRANS; 20FT;
PRO POWER - SST-064-2005-CLR - HEAT SHRINK TUBING; 25.4MM ID; FEP; TRANS; 10FT;
Pro Power Sst-006-2050-Clr Heat Shrink Tubing,2.36mm Id,Fep,Trans,100ft,Pk50
Pro Power Sst-006-6025-Clr Heat Shrink Tubing,2.36mm Id,Fep,Trans,12.5ft,Pk25
Pro Power Sst-008-2050-Clr Heat Shrink Tubing,3.175mm Id,Fep,Trans,100ft,Pk50
Pro Power Sst-008-6025-Clr Heat Shrink Tubing,3.175mm Id,Fep,Trans,12.5ft,Pk25
Pro Power Sst-012-2025-Clr Heat Shrink Tubing,4.776mm Id,Fep,Trans,50ft,Pk25
Pro Power Sst-012-6025-Clr Heat Shrink Tubing,4.776mm Id,Fep,Trans,12.5ft,Pk25
Pro Power Sst-016-2025-Clr Heat Shrink Tubing, 6.35mm Id, Fep, Trans, 50ft, Pk25
Pro Power Sst-024-2010-Clr Heat Shrink Tubing,9.525mm Id,Fep,Trans,20ft,Pk10
Pro Power Sst-024-6010-Clr Heat Shrink Tubing, 9.525mm Id, Fep, Trans, 5ft, Pk10
Pro Power Sst-032-2010-Clr Heat Shrink Tubing, 12.7mm Id, Fep, Trans, 20ft, Pk10
Pro Power Sst-048-2005-Clr Heat Shrink Tubing, 19.1mm Id, Fep, Trans, 10ft, Pk5
Pro Power Sst-064-2005-Clr Heat Shrink Tubing, 25.4mm Id, Fep, Trans, 10ft, Pk5
Pro Power Sst-128-2001-Clr Heat Shrink Tubing, 50.8mm Id, Fep, Trans, 2ft
Process Technology HSL4420-R14-PLI 480V 4000W SST Coil 18" L-Shape Tank
PROCON PUMP SST 105B240R32BC099
Profacture PRO-99-287-003 Shuttle Interface PCB (SST-3) Tegal 99-287-003, 410382
Profacture PRO-99-287-003 Shuttle Interface PCB (SST-3) Tegal 99-28