K55HXEDE-695億佳有圖
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(shí)和計(jì)數(shù)的時(shí)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(shí)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(gè)小小的例子來(lái)說(shuō)明.


每一個(gè)設(shè)備總是不會(huì)忘記有一個(gè)按鈕，它也是在我們遇到緊急情況時(shí)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(shí)我們只要按下它，機(jī)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(gè)外部觸發(fā)信號(hào)時(shí)，對(duì)I/O進(jìn)行再次檢測(cè)，當(dāng)確認(rèn)有外部觸發(fā)信號(hào)時(shí)，保護(hù)現(xiàn)場(chǎng)并將程序計(jì)數(shù)器自動(dòng)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(jì)數(shù)器返回到主程序繼續(xù)工作。有一點(diǎn)可以說(shuō)明的是我們一般會(huì)把急停按鈕的外部中斷升至別，從而保證安全。


當(dāng)我們?cè)诠ぷ魍暌粋€(gè)工件時(shí)，給PLC一個(gè)信號(hào)，將PLC的內(nèi)部計(jì)數(shù)器加1來(lái)計(jì)算我們的工作量時(shí)，一個(gè)簡(jiǎn)單的計(jì)數(shù)器能解決問(wèn)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(jì)數(shù)器的功能，當(dāng)我們?cè)诮邮芤恍└咚俚臄?shù)據(jù)時(shí)，這里所說(shuō)的高速是在在微秒級(jí)的數(shù)據(jù)，比如條碼掃描機(jī)在不斷的掃描數(shù)據(jù)，數(shù)據(jù)處理器DSP計(jì)算的高速信號(hào)等，我們就要采用到計(jì)數(shù)器來(lái)幫助我們進(jìn)行計(jì)數(shù)。它在PLC執(zhí)行程序時(shí)一旦發(fā)現(xiàn)計(jì)數(shù)器對(duì)應(yīng)的中斷，就會(huì)立即放下手上的工作。經(jīng)過(guò)再次編程的梯形圖程序說(shuō)明我們?cè)趫?zhí)行程序時(shí)計(jì)數(shù)器會(huì)自動(dòng)的執(zhí)行對(duì)應(yīng)的工作，從而將計(jì)數(shù)器的級(jí)別升至高一級(jí)別。

OMRON NT600S-ST121B-EV3    NT600SST121BEV3
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OMRON NT600S-ST211-V1    NT600SST211V1
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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
OSI Andrews Spinal Surgery Table SST-3000
OSI ANDREWS SPINAL SURGERY TABLE SST-3000
Osi Andrews Sst-3000 Spinal Surgery Table
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
Parker Hydraulic Coupler, 1/2 In NPT SST-4M
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,          
PARKER SST-6 Coupler Body, 3/4-14, 3/4 In. Body, 303 SS
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
PARKER SST-8 Coupler Body, 1-11-1/2, 1 In. Body, 303 SS
PARKER SST-8M Coupler Body, 1-11-1/2, 1 In. Body, 303 SS
PARKER SST-N8 Coupler Body, 1-11-1/2, 1 In. Body, 303 SS
PARKER SST-N8M Coupler Body, 1-11-1/2, 1 In. Body, 303 SS
Parker St Series Sst Quick Coupler + 1/2"
Parker ST Series Straight - Thru 1"inch Couplers #SST-6 (Qty of 2), 97E-4
Parker, Teledyne Republic Check Valve 483-1-1/4SST-1/2
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,
PRG540-44SS POP, JAWS [2 PC SET] FOR SST RIVETS, SCH B:8466.92.0080/ECCN:EAR99
PRG540-46SS POP, JAWS [2 PC SET] FOR SST RIVETS, 1/8-3/16 SST RIVETS
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