[优秀毕业设计精品]交通指挥信号灯控制系统设计

学生课程设计（论文）题目交通指挥信号灯控制系统设计学生姓名学号所在院系机电工程学院专业07级机械设计及其自动化班级3班指导教师职称高级工程师2010年12月26日教务本科学生课程设计任务书A1A3交通指挥信号灯控制系统设计1A4A4A5A0A2A6A7A3A7A5A0A6A7A5A10A8A9A11A12A13A14A15A16A17A8A9A12A13A14A15A18A19A20A21A22A23A24A25A26A21A27A28A29A30A31A32A33A34A35A36A37A38A19A39A40A41A42A43A44A45A46A47A48A32A49A50A51A52A53A54A55A56A33A34A57A36A26A21A32A38A58A59A60A61A62A37A63A41A54A64A65A21A22A32A49A50A62A66A37A67A68A21A22A69A70A62A66A37A64A65A45A46A47A48A71A72A49A50A32A73A74A75A60A76A77A78A79A80A62A66A562A81A9A11A82A83A17A84A85A86A87A88A84A85A86A87A88A89A89A90A91A92A93A94A95A91A92A93A94A81A96A97A87A88A97A87A81A81A98A99A87A88A100A98A99A88A100A98A88A100A101A101A102A49A50A41A103A104A105A106A107A108A23A109A110A111A112A113A114A115A116A45A46A47A48A37A113A32A117A44A44A118A119A120A120A121A122A56A49A50A123A124A125A64A108A126A127A128A129A121A121A121A105A130A131A32A31A78A49A50A132A133A134A120A135A44A136A137A138A139A140A134A141A135A142A46A77A143A144A145A146A135A45A46A147A148A146A149A150A119A114A115A116A45A46A37A142A46A114A115A116A32A151A152A146A153A154A155A146A53A78A156A56A157A134A129A135A158A43A159A49A50A32A160A161A49A50A71A72A50A162A53A116A163A164A46A146A563A81A165A87A166A167A168A169A167A168A170A127A171A172A173A174A175A37A176A43A44A41A74A177A47A48A49A50A178A37A179A180A126A65A175A181A182A183A184A185A128A120A121A121A120A186A170A120A171A187A188A189A37A176A43A44A47A48A49A50A178A37A179A180A126A43A159A77A30A183A184A185A128A120A121A121A129A186A170A141A171A190A191A192A37A176A193A194A195A196A43A197A198A132A178A37A179A180A128A43A159A77A30A183A184A185A128A127A199A199A141A1864A200A201A202A203A204PLCA205A206A207A208A209A210A211A212A203A213A214A203A215A216A217A218A219A220A221A2032004A2225A223A224A225A203A204A226A227A228A229A230A231A232A212A203A233A234A203A233A234A235A236A219A220A221A2032003A2226A237A238A239A203A204A240A241A242A215A232A243A211A244A245A212A203A246A247A248A215A219A220A221A2032004A2224A249A249A250A251A252A253A254A255A5A0A253A1A250A251A253A254A250A179A2A4A3A6A7A8A9A10A11A12A13A14A15A16A17A18A19A20A21A22A23A248A25A26A27A28A29A30A31A32A33A34A35A16A17A18A29A30A31A32A36A37A38A36A39A40A41A33A27A28A42A43A44A45A33A46A47A48A49A50A51A5248A27A28A29A30A31A32A53A54,A55A28A56A57A29A30A5816A59A60A61A62A63A64A65A66A67A68A69A70A71A72A63A64A73A748A75A76A77A78A79A624A80A81A82A83A72A84A85A86A87A88A81A89A90A91A7420A71A613A92A93A94A95A96A112A182A97A120A98A992010A14412A1833A184A100A101A102A103A104A102A103A105A144A183A184A106A107A108A109A110A111A105A114A113A115A116A117A118A119A144A183A184课程设计（论文）指导教师成绩评定表A121A122A123A124A123A124交通指挥信号灯控制系统设计A125A126A127A122A126A127A126A128A129A126A125A130A131A132A130A131A133A134A135A1892001A136A137A138A139A140A141A142A143A145A146A147A148A149A150A151A152A153A154A148A155A156A157A158A159A160A161A149A150A162A163A16402A192A136A165A166A167A193A168A169A170A171A172A173A174A175A173A174A176A177A178A180A174A181A185A186A187A172A188A190A191A194A195A196A197A198A199A200A201A156A202A159A203A204A16403A205A206A207A208A209A169A210A211A212A213A214A215A216A217A159A218A219A148A149A150A220A221A213A164A222A223A224A2253504A226A227A228A229A230A231A232A222A223A233A234A233A234A235A236A237A238A161A239A240A241A242A235A243A244A245A197A246A247A172A248A249A250A148A235A251A252A253A254A172A173A255A58A148A235A0A198A250A1A2A254A3A4A5A148A138A6A156A7A8A159A9A3A16405A18A229A10A11A232A222A223A68A235A12A13A176A177A14A202A178A180A241A15A16A17A19A20A21A151A235A22A6A23A153A158A24A3A25A198A250A159A172A26A27A28A151A156A82A29A174A158A149A143A30A159A31A32A195A196A33A239A240A159A235A154A16406A34A35A112A165A62A120A222A223A36A37A38A232A34A35A222A223A68A235A251A252A200A201A172A173A27A28A148A12A13A1A2A142A39A40A142A174A20A175A174A164A150A190A172A173A149A150A148A255A58A251A252A174A165A41A151A21A150A42A43A44A171A174A214A114A16407A35A45A46A35A45A47A18A229A222A223A68A155A156A153A81A159A255A58A236A48A197A253A254A235A154A151A235A236A237A201A48A49A1A2A50A204A51A29A174A158A149A174A253A254A241A134A52A200A201A190A16408A53A35A45A54A165A62A55A56A232A57A59A222A223A112A226A227A57A59A222A223A167A60A204A61A63A57A59A222A223A120A233A234A233A234A155A156A153A81A159A255A58A82A29A174A4A5A174A253A254A174A179A64A159A235A154A164A124A56A207A2094509A208A65A112A54A65A202A120A207A209A167A210A211A167A34A35A112A95A10A120A212A66A67A69A139A68A180A64A70A71A72A14A202A216A73A74A216A217A75A76A151A216A73A116A180A64A70A178A77A78A79A80A75A76A16410A34A35A83A84A85A112A95A10A120A207A209A86A234A179A25A87A88A214A114A148A156A89A246A151A13A3A251A252A148A3A25A137A4A148A9A3A141A90A64A254A151A172A173A251A252A148A4A5A253A254A160A161A16411A91A92A233A234A233A234A0A93A94A149A150A156A96A1A74A97A98A148A74A156A12A185A89A246A164A99A100A99A100A101A102A103A104A105A106A107A108A109A110A111A113A115A144A183A184A174A117A118A119A121A122A123A125A126A127A128I摘要PLC可编程序控制器是以微处理器为基础,综合了计算机技术、自动控制技术和通讯技术发展而来的一种新型工业控制装置。它具有结构简单、编程方便、可靠性高等优点,已广泛用于工业过程和位置的自动控制中。据统计,可编程控制器是工业自动化装置中应用最多的一种设备。专家认为,可编程控制器将成为今后工业控制的主要手段和重要的基础设备之一,PLC、机器人、CAD/CAM将成为工业生产的三大支柱。由于PLC具有对使用环境适应性强的特性,同时其内部定时器资源十分丰富,可对目前普遍使用的“渐G17839G5347G257信号灯G17839G15904G12946G11842控制,特G2047对多G4712G17347G2487的控制可方便G3332G4466G10628。G3252G8504G10628G3324G17246来G17246多G3332将PLC应用于交通灯系统中。同时,PLCG7424G17535G17836具有通讯G13864G13605G2163G14033,将同一G7477G17959G17347G990的信号灯G13464成一G4628G3507G13605G17839G15904统一G16855G5242G12661理,可G13565G11713G17722G17754通G15904等G1517时G19400,G4466G10628G12197G4410化G12661理关键词G726交通灯G3G3G51G47G38G3程序G3设计A174A117A118A119A121A122A123A125A126A205A1291目录G3摘要I目录1前言31交通信号控制系统任务分析411A130A131A132A133A135A136A139A131A132A133A135421A140A143A130A131A143A13042设计背景521A145A146A147A148A146A147522A149A152A154A155A156A157A160A161A162A163A152A154A155A156A160A16153PLC的特点及应A166631A167A168632PLCA169A170A172A170A172633PLCA169A173A175A173A1756A176A177A176A177A178A219A181A182A186A187A188A189A1907A176A177A176A177A191A223A192A182A189A1907A176A177A176A177A176A193A194A195A1967A197A198A197A198A199A200A201A195A1967A197A198A197A198A203A227A206A209A2137A197A198A197A198A214A215A216A217A218A22084PLC的结构及原理941PLCA221A222A224A222A224942PLCA225A226A228A226A228943PLCA225A229A230A231A232A229A230A231A2321044PLCA233A234A235A236A234A23510A237A238A237A238A239A240A241A24210A237A238A237A238A243A244A245A2461145PLCA225A247A248A249A250A247A248A249A25011A237A238A251A238A239A252A253A252A254A255A235A112A78A0A1A78A0A2A1A3A4A5A12011452A243A6A7A8A9A10A112AND/ANDIA120A11A247A12A9A10A112OR/ORIA12012453A27A13A14A15A247A12A16A7A12A9A10A112ORBA11ANBA12013454A61A17A18A19A9A10A112ENDA120145丁字路口交通信号灯PLC控制系统简介1551A85A20A21A22A23A24A25A20A21A22A2315511A28A26A29A3015512A28A26A31A321652A106A33A34A35A33A341753A108A36A37A38A36A37186系统I/O分配2061A39A40I/OA58A41A42A41A4220A174A43A44A45A46A47A48A49A50A205A51262PLCA114A52A53A54A55A52A53217软件设计2271A119A56A57A59A56A572372A123A60A62A63A64A65A66A67A68A123A60A63A64A65A66PLCA130A69A65A130A692973A132A70A130A69A65A71A67A68A72A73A132A70A130A69338总结3481A74A62A75A76A74A62A75A763482A136A77A79A80A136A77A79A803483A138A81A82A83A84A81A82A83A8435参考文献36A86A87A88A89A90A91A92A93A94A207A95A96A97A98A99A100A101A102A103A104A1053前言G5415今G712G13430G13523灯G4445装G3324G2520G1022G17959G2487G990G712已G13475成为G11107G4560交通G17722G17754最G5132G16277和最有G6940的手段。G1306G17837一技术G332419G1002G13438G4613已G1998G10628了。1858G5192G712G3324G14533G3281G1274G6970主要G15915G3848G4445装了以G10135G10040G8680为G1821源的G13430G712G15025G1016G14406的机G7812G6215手G5347信号灯G712用以指挥G20544G17722通G15904。G17837是G1002G11040G990最G7101的交通信号灯。1868G5192G712G14533G3281机G7812工程G5084G13447G1246特G3324G1274G6970G4053G7043G6947G7043特G2318的G16770G1262大G2426前的广G3342G990G712G4445装了G1002G11040G990最G7101的G10040G8680G13430G13523灯。它由G13430G13523G1016以G7071G17728G5347方G5430G10639G10839G6564灯G13464成G712G13430G14406G15932G12046“G1584G8502”G712G13523G14406G15932G12046“G8892G5859”。1869G51921G73882G7097G712G10040G8680灯G10202G9868G712使G16698G4531G2475G1272G712G17942G15999G2474G9052。G11017G8680G2563动的G13430G13523灯G1998G10628G3324G13666G3281G712G17837种G13430G13523灯由G13430G13523G21656三G14406G3290G5430的G6249G1821器G13464成G7121914G5192G3999G4445装于G13457约市5号大G15915的一座高塔G990。G13430灯亮G15932G12046“G1584G8502”G712G13523灯亮G15932G12046“通G15904”。1918G5192G712又G1998G10628了带控制的G13430G13523灯和G13430外线G13430G13523灯。带控制的G13430G13523灯G712一种是把压力探测器G4445G3324G3332下G712G17722G17754一接近G13430灯便变为G13523灯；另一种是用扩音器来G2563动G13430G13523灯G712司机遇G13430灯时按一下嗽叭G712G4613使G13430灯变为G13523灯。G13430外线G13430G13523灯G5415G15904人踏G990对压力G6947感的G17347面时G712它G4613G14033G4531觉到有人要过G20544G17347。G13430外G1821束G14033把信号灯的G13430灯延长一段时G19400G712推迟汽G17722放G15904G712以免发生交通事故。信号灯的G1998G10628G712使交通得以有G6940G12661制G712对于G11107G4560交通流量、G6564高G17959G17347通G15904G14033力G712减少交通事故有明显G6940果。A107A109A110A111A113A115A116A117A118A121A122A124A125A126A127A128A129A131A133A134A13541交通信号控制系统任务分析11设计任务和内容任务试设计一G1022十字G17347G2487交通指挥信号灯PLC控制系统G712灯的供G11017G11017压220V。G3内容G3252为G7424课程设计是交通灯的PLC控制设计G712所以要了解G4466际交通灯的变化情况和规律。假设一G1022十字G17347G2487为东西南北走向。然后南北G13430灯G712东西G13523灯通G17722。过一段时G19400东西G13523灯灭G712G21656灯闪烁几次G712南北仍然G13430灯。再G17728南北G13523灯通G17722G712东西G13430灯。过一段时G19400G712南北G13523灯灭G712闪几次G21656灯G712东西仍然G13430灯。最后循环。21方案设计G3324G7097G5132生活中我们可以看G16277十字G17347G2487有很多种G5430G5347G712而最G5132G16277的有G1016种G726十字G5430和丁字G17347G5430。我们以G17837G1016种方案来设计交通指挥信号灯控制系统。方案一G726G3G3G3G3G3G3G3G3G3G3G3G13430G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G21656G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G13430G3G21656G3G13523G3G3G3G3G3G3G3G3G3G3G3G3G13523G3G3G3G3G3G3G3G3G3G3G3北G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3西G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3东G3G3G3G3G3G3G3G3G3G3G3G13430G3G21656G3G13523G3G3G3G3G3G3南G3G3G3G3G3G3G3G3G3G3G3G13430G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G21656G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G13523十字G17347G2487G12046G5859图方案二丁字G17347G2487G12046G5859图A137A139A140A141A142A143A144A145A146A145A146A147A14852设计背景21背景概述随着汽G17722G17839入家庭步伐的加快和城市汽G17722数量的增多G712城市G17959G17347交通问题显得G17246来G17246重要。G20544G17347G990G13475G5132G1262看到G17837种G10628象一旦整G1022G17347G2487的交通信号灯G1998G10628故障G712若没有交G16698的及时G11107G4560G712该G17347G2487G4613G1262塞得一塌糊涂G712甚至造成严重的交通事故。原交通信号控制大都采用继G11017器或单片机G4466G10628G712存G3324着G2163G14033少、可靠性差、维护量大等缺点G15G17246来G17246G993G14033适应城市G17959G17347交通高G17907发展的要G8726。另外G712G7693据人G17722流量的多少G712可G14033随时增加G17347G2487的交通信号G712G8616G3926增加G17728G5379或人G15904G17959交通信号G712原有系统的制约性G4613G7368加明显了。为了G5369G15929原交通信号灯系统存G3324的以G990缺点G712我们G5353入了基于G51G47G38控制的交通信号灯控制系统。G3G7424G7003对十字G17347G2487交通信号灯控制系统G712G17828用可编程G17935G17765器G1226G51G47G38G1582了G17731G1226G994G11840G1226的设计G712G14033基G7424G17810到控制要G8726。系统G1177G4466G10628了G4579型G51G47G38系统的一G1022G19619G5430G712G3324G4448G2904G2520G20045G2163G14033方面都G17836G19668要G17839一步的分G7524、G11752G12362和G16855试工G1328。G3926果G17839一步结合工业控制的要G8726G712G5430成一G1022G17751为成型的产G2709G712G2029G19668要G1328G7368多、G7368G9157入的G11752G12362。G3G322可编程逻辑控制器简介可编程G17935G17765控制器G11G51G85G82G74G85G68G80G80G68G69G79G72G3G47G82G74G76G70G3G38G82G81G87G85G82G79G79G72G85G15简G12228G3G51G47G38G12G3G7693据G3281际G11017工G4008G2604G1262G11G44G40G38G12G3324G20G28G27G26G5192的可编程控制器G3281际G7643G1946G12544三G12307中G712对其G1328了G3926下定G1053G726“可编程控制器是一种数字G17828算G6817G1328的G11017G4388系统G712专为G3324工业环境应用而设计的。它采用可编程序的存G1660器G712用来G3324其内部存G1660G6203G15904G17935G17765G17828算G712G20046序控制G712定时G712计数G994算术G17828算等G6817G1328的指G1208G712G5194通过数字G5347、G8181G6323G5347的G17767入和G17767G1998G712控制G2520种G12879型的机G7812或生产过程。可编程控制器及其有G1863外部设备G712都应按G7143于使工业控制系统G5430成一G1022整G1319G712G7143于扩G1817其G2163G14033的原G2029设计。G257可编程控制器G1328为目前工业自动化的重要基础设备G712G15999G12228为“工业自动化三大支柱性产业之一G257G712G3324G2520工业生产G20058G3507发挥着G5852来G5852大的G1328用。A149A150A151A152A153A154A155A156A157PLCA158A159A160A161A162A16363PLC的特点及应用31概述G3可编程控制器G708G51G85G82G74G85G68G80G80G68G69G79G72G3G38G82G81G87G85G82G79G79G72G85G709是计算机家G7075中的一G2604G712是为工业控制应用而设计制造的。G7101G7411的可编程控制器G12228G1328可编程G17935G17765控制器G708G51G85G82G74G85G68G80G80G68G69G79G72G3G47G82G74G76G70G3G38G82G81G87G85G82G79G79G72G85G709G712简G12228G51G47G38G712它主要用来G1207G7379继G11017器G4466G10628G17935G17765控制。随着技术的发展G712G17837种装置的G2163G14033已G13475大大G17241过了G17935G17765控制的G14551G3272G712G3252G8504G712今G3837G17837种装置G12228G1328可编程控制器G712简G12228G51G38。G1306是为了G18003免G994G1022人计算机G708G51G72G85G86G82G81G68G79G3G38G82G80G83G88G87G72G85G709的简G12228G9163G9114G712所以将可编程控制器简G12228G51G47G38。G3G332PLC的特点G20可靠性高G712G6251G5190G6212G14033力强；G3G21G3通用性高G712使用方便；G3G22程序设计简单G712G7143G4410G712G7143G6038；G3G23采用G1820G17839的G8181G3371化结构G712系统G13464合G9801活方便；G3G24系统设计G2620G7411G11713；G3G25G4445装简便G712G16855试方便G712维护工G1328量G4579；G3G26对生产工G14414G6925变适应性强G712可G17839G15904G7592性生产；G3G333PLC的应用目前G712G51G47G38G3324G3281内外已广泛应用于G19062G19093、G11719G8845、化工、G11017力、G5326G7460、机G7812制造、汽G17722、G17743G13454、交通G17828G17767、环G1457及G7003化G4101G1060等G2520G1022G15904业G712使用情况大G14280可G5414G13447为G3926下几G12879。G3G3A164A165A166A167A168A169A170A171A172PLCA173A175A176A177A178A1797331开关量的逻辑控制G17837是G51G47G38最基G7424、最广泛的应用G20058G3507G712它G2474G1207传统的继G11017器G11017G17347G712G4466G10628G17935G17765控制、G20046序控制G712既可用于单台设备的控制G712也可用于多机群控及自动化流水线。G3926G8892塑机、印刷机、订书机G7812、G13464合机床、磨床、包装生产线、G11017镀流水线等。G3G3332模拟量控制G3324工业生产过程G5415中G712有许多连续变化的量G712G3926温G5242、压力、流量、液位和G17907G5242等都是G8181G6323量。为了使可编程控制器处理G8181G6323量G712必须G4466G10628G8181G6323量G708AG81G68G79G82G74G709和数字量G708DG76G74G76G87G68G79G709之G19400的A/DG17728换及D/AG17728换。G51G47G38厂家都生产配套的A/D和D/AG17728换G8181G3371G712使可编程控制器用于G8181G6323量控制。G3G3G3333运动控制G51G47G38可以用于G3290G2620G17828动或直线G17828动的控制。从控制机构配置来说G712G7101G7411直接用于开G1863量G44/OG8181G3371连接位置传感器和G6203G15904机构G712G10628G3324一般使用专用的G17828动控制G8181G3371。G3926可驱动步G17839G11017机或伺服G11017机的单轴或多轴位置控制G8181G3371。G1002G11040G990G2520主要G51G47G38厂家的产G2709几乎都有G17828动控制G2163G14033G712广泛用于G2520种机G7812、机床、机器人、G11017梯等G3342合。G3G3G3334过程控制过程控制是指对温G5242、压力、流量等G8181G6323量的闭环控制。G1328为工业控制计算机G712G51G47G38G14033编制G2520种G2520样的控制算法程序G712G4448成闭环控制。G51G44DG16855节是一般闭环控制系统中用得G17751多的G16855节方法。大中型G51G47G38都有G51G44DG8181G3371G712目前许多G4579型G51G47G38也具有G8504G2163G14033G8181G3371。G51G44D处理一般是G17828G15904专用的G51G44DG4388程序。过程控制G3324冶金、化工、热处理、锅炉控制等G3342合有非G5132广泛的应用。G3G3G3G3335数据处理现代PLC具有数G4410G17828算G708含矩阵G17828算、函数G17828算、G17935G17765G17828算G709、数据传送、数A180A181A182A183A184A185A186A187A188PLCA173A175A176A177A178A1798据G17728换、排序、查G15932、位G6817G1328等G2163G14033G712可以G4448成数据的采集、分G7524及处理。G17837些数据可以G994存G1660G3324存G1660器中的参考值G8616G17751G712G4448成一定的控制G6817G1328G712也可以利用通信G2163G14033传送到G2047的智G14033装置G712或将它们打印制G15932。数据处理一般用于大型控制系统G712G3926无人控制的G7592性制造系统；也可用于过程控制系统G712G3926造纸、冶金、食G2709工业中的一些大型控制系统。G3G3G3336通信及联网G51G47G38通信含G51G47G38G19400的通信及G51G47G38G994其它智G14033设备G19400的通信。随着计算机控制的发展G712工厂自动化G13605络发展得很快G712G2520G51G47G38厂商都十分重视G51G47G38的通信G2163G14033G712纷纷推G1998G2520自的G13605络系统。新近生产的G51G47G38都具有通信接G2487G712通信非G5132方便。G3G3G3G3G3G3G3G3A180A181A182A183A184A185A186A187A188PLCA173A175A176A177A189A19094PLC的结构及原理41PLC的分类G20G3按G83G79G70的结构G5430G5347分G12879G726G20G709整G1319G5347；G21G709G8181G3371G5347。G3G21G3按G83G79G70的G44/O点数分G12879G726G20G709G4579型G21G24G25点以下；G21G709中型G21G24G25点以G990G712G210G23G27点以下；G22G709大型G210G23G27点以G990。G3G22按G83G79G70G2163G14033分G12879G726抵挡型G712中挡型G712高档型。G3G342PLC的结构PLCG4466质是一种专用于工业控制的计算机其G11840G1226结构基G7424G990G994微型计算机从结构G990分G712G51G47G38分为固定G5347和G13464合G5347G708G8181G3371G5347G709G1016种。固定G5347G51G47G38包括G38G51U板、G44/O板、显G12046面板、内存G3371、G11017源等G712G17837些元素G13464合成一G1022G993可拆卸的整G1319。G8181G3371G5347G51G47G38包括G38G51UG8181G3371、G44/OG8181G3371、内存、G11017源G8181G3371、底板或机架G712G17837些G8181G3371可以按照一定规G2029G13464合配置。G3G51G47G38的基G7424结构框图G3926下G726G3G3G3G3G3G3G3接G2475G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3驱动G3G3G3G3G10628G3342信号G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G2475控元G1226G3G3G3G3G3G3G3G3A191A236A192A193A251A194A252A195A196A197A198A199CPUA200A201A202A251A194A192A193A251A194A191A203A180A181A182A183A184A185A186A187A188PLCA173A175A176A177A189A1901043PLC的工作原理G3G3G3G3G3G20G17767入采样阶段G712G3324G8504阶段G712G20046序读入所有G17767入缎G4388通断状态G712G5194将读入的信息存入内存G712接着G17839入程序G6203G15904阶段G712G3324程序G6203G15904时G712即使G17767入信号发生变化G712内存中G17767入信息也G993变化G712只有G3324下一G1022扫描G2620G7411的G17767入采样阶段才G14033读入信息。G3G3G3G3G3G3G21G3程序G6203G15904阶段G726G83G79G70对用户程序扫描。G33A191A203A204A206A208A209A210A211A212A213A214A215A216A217A218A219A220A221A222A223A201A224A225A226A227A228A229A230A231A232A225A201A224A233A191A203A234A237A238A239A240A191A203A241A242A244A245A226A227A239A251A246A248A249G344PLC汇编语言采用面向控制过程G712面向问题G712简单直观的G83G79G70编写横语言G712G5132用的有G726梯G5430图G712语句G15932G712G2163G14033图等。G3441梯形图由继G11017器控制G17935G17765演变而来G712G1016者具有一定程G5242的相似性G712G1306梯G5430图编程语言G2163G14033G7368强G7368方便。G3主要特点G726G3G20自G990而下G712从左到右的G20046序排列G712G1016列垂直线为母线。每一G17935G17765G15904G712起使左母线。G3G3G3G21G3梯G5430图中采用继G11017器名G12228G712G1306G993是真G4466物理继G11017器G12228为“G17731继G11017器G257G3G3G3G22G3每G1022梯级流过的是概念G11017流G712从左向右G712其G1016端母线设有G11017源。G34A191A236A250A201A232A225A253A254A192A236A244A245A225A255A23A115A25A225A191A236A250A201A232A225A220A221A191A236A192A236A6A250A201A232A225A26A57A0A26A1A2A3A45A4A5A249G3A180A181A182A183A184A185A186A187A188PLCA173A175A176A177A189A19011442语句表又G2495指G1208G15932G712G12879似计算机G8731编语言G5430G5347G712用指G1208的G16772G2173G12538编程。G3梯G5430图G994G2173G16772G12538的对应G1863系G726G3G2173G16772G12538指G1208G994梯G5430图指G1208有严G7696的对应G1863系G712而梯G5430图的连线又可把指G1208的G20046序G1116以G1319G10628。一般G16774G712其G20046序为G726G1820G17767入G712后G17767G1998G708含其G1194处理G709；G1820G990G712后下；G1820左G712后右。有了梯G5430图G4613可将其G13775G16805成G2173G16772G12538程序。G990图的G2173G16772G12538程序为G726G3G3G3332G3348指G1208变量0000LDX0000001ORX0100002ANDX0010003OUTY0000004ENDG2465之G7693据G2173G16772G12538G712也可G11023G1998G994其对应的梯G5430图G3G345PLC的基本指令451输入输出指令（LD/LDI/OUT）下面把G47D/G47DG44/OUG55三G7477指G1208的G2163G14033、梯G5430图G15932G12046G5430G5347、G6817G1328元G1226G3以列G15932的G5430G5347加以说明G726G3G3G3G3G3G12538号G3G3G3G3G3G3G3G3G2163G3G3G3G14033G3G3G3G3G3G3G3G3梯G5430图G15932G12046G3G3G3G3G6817G1328元G1226G3G3G3G3G3G47DG708G2474G709G3G3G5132开G16314点G994母线相连G3G3G3G3G3G3G3G3G3G3G3G3G3G59G712G60G712G48G712G55G712G38G15G54G3G3G3G3G3G47DG44G708G2474G2465G709G5132闭G16314点G994母线相连G3G3G3G3G3G3G3G3G3G3G3G3G59G712G60G7