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ʱ䣺2019.03.16 188ע|188ƽ̨appԴ

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 1

1.1

    Ǵ188ע|188ƽ̨appһ֣Ҫе˶188ע|188ƽ̨appٶȡλáǶȡͼȣƾ䱸ԹΪࡢٶȼλ188ע|188ƽ̨appȣӦ÷Χ൱㷺ղͬ188ע|188ƽ̨app෽ԷΪ¼ͣ

? ݼԭɷΪѧʽŵʽӦʽ͵ʽ

? źʽԷΪģ

? ݱʽΪʽʽͻʽ

    Ǽ⡢缼һ188ע|188ƽ̨appֻҪùդ188ע|188ƽ̨appԭʵλơֱ任ͨת188ע|188ƽ̨appеλת188ע|188ƽ̨app188ע|188ƽ̨app̡դת·Դźת·еɡнṹ򵥡ȸߡŵ㣬㷺Ӧھܶλٶȡȡٶȡ񶯵ȷ档

1.2ʽ

    ʽṩһֶλɢԼλƱ仯ٶȣ188ע|188ƽ̨appзʽ188ע|188ƽ̨appصÿһźžͶӦһλƣܹλֵ188ע|188ƽ̨appźšʽ188ע|188ƽ̨appij׼188ע|188ƽ̨appλֱܹӼλϢ

    ͼ1-1 ʾʽҪɹԴ̡դת·ɡϿнھ188ע|188ƽ̨app״͸϶͸϶֮һڡդϿAB Ӧ188ע|188ƽ̨app͸϶ͨ赲Դ͹֮188ע|188ƽ̨appߣ188ע|188ƽ̨appھ188ע|188ƽ̨appھȣ͸϶1/4 ھ࣬ʹù188ע|188ƽ̨appźλ 90㡣űתתʱդ͸̺ͼդ188ע|188ƽ̨app͸϶䵽ϣλ 90188ע|188ƽ̨appҲ188ע|188ƽ̨appźţźžת·188ע|188ƽ̨appźŴͿԵõ188ע|188ƽ̨appתǻٶϢ

 ͼ1-1ʽԭͼ

    һ˵ʽ AB λΪ 90188ע|188ƽ̨appźţν188ע|188ƽ̨appźţ AB 188ע|188ƽ̨appȺλùϵԷжϳ188ע|188ƽ̨appת⣬һ㻹ṩολ188ע|188ƽ̨app N ־ָʾźţÿתһܣᷢһλ־źš

 ͼ1-2 ʽźţ

1.3ʽ

    ʽ188ע|188ƽ̨appԭɲʽͬʽͬ188ע|188ƽ̨appǣʽòͬ188ע|188ƽ̨appָʾÿͬ188ע|188ƽ̨appλãһֱ188ע|188ƽ̨app

 ͼ1-3ʽԭͼ

    ͼ1-3ʾʽ188ע|188ƽ̨appԲؾͬÿ͸Ͳ͸188ע|188ƽ̨appɣ188ע|188ƽ̨appĿ˫ϵ188ע|188ƽ̨app188ע|188ƽ̨app188ע|188ƽ̨appλ188ע|188ƽ̨appһǹԴһӦÿһһԪ̴ڲͬλʱԪܹתӦ188ע|188ƽ̨appƽźţγɶȻԽֱ࣬ʾԽߣһ n λƷֱ188ע|188ƽ̨app̱ n

 ͼ1-4ʽ̣

    ݱ뷽ʽ188ע|188ƽ̨appͬʽ188ע|188ƽ̨app̣̺͸̣ͼ1-4 ʾ

    ʽ188ע|188ƽ̨appصDzҪת188ע|188ƽ̨appλöɶһ̶188ע|188ƽ̨appλӦ188ע|188ƽ̨app룬ֱӶǶ188ע|188ƽ̨appֵ⣬ʽʽۻҵԴгλϢҲᶪʧ

 2 ź

    һ£ӱ188ע|188ƽ̨appȡ188ע|188ƽ̨appźŵƽϵͣҲ򣬲ֱڿơźŴԶ봫䣬ڱڻҪźŽзŴεȴ188ע|188ƽ̨appźһҲβΪβź׽ִڿϵͳӦñȽϹ㷺

    ʽ188ע|188ƽ̨appźм缫·ѹʽȶźʽ

    2.1缫·

    缫··188ע|188ƽ̨appܷ伫ΪˣҼ缫188ע|188ƽ̨app·ʹ188ע|188ƽ̨appͲͬԷΪNPN缫·Ҳ©߼ 1 ʱѹΪ 0Vͼ2-1ʾPNP缫·ҲԴ߼ 1 ʱѹΪԴѹͼ2-2ʾʽڱѹźŽװ188ע|188ƽ̨appѹһ188ע|188ƽ̨app¿ʹ188ע|188ƽ̨app·

 ͼ2-1 NPN 缫·

 ͼ2-2 PNP缫·

    PNP188ע|188ƽ̨app缫·188ע|188ƽ̨appźţԽ뵽©188ע|188ƽ̨appУ188ע|188ƽ̨appԭͼ2-3ʾ

    ע⣺PNP188ע|188ƽ̨app缫·188ע|188ƽ̨appźŲֱӽԴ188ע|188ƽ̨appС

 ͼ2-3 PNP188ע|188ƽ̨appԭ

    NPN188ע|188ƽ̨app缫·188ע|188ƽ̨appźţԽ뵽Դ188ע|188ƽ̨appУ188ע|188ƽ̨appԭͼ2-4ʾ

    ע⣺NPN188ע|188ƽ̨app缫·188ע|188ƽ̨appźŲֱӽ©188ע|188ƽ̨appС

 ͼ2-4 NPN188ע|188ƽ̨appԭ

    2.2 ѹ

    ѹڼ缫··188ע|188ƽ̨appϣڵԴͼ缫֮һ裬ʹü缫͵Դ֮һȶ188ע|188ƽ̨appѹ״̬ͼ2-5һڱѹźŽװ188ע|188ƽ̨appѹһ188ע|188ƽ̨appʹ188ע|188ƽ̨app·

 ͼ2-5 ѹͣ

    2.3 ʽ

    ʽʽֱΪ PNP ͺ NPN 188ע|188ƽ̨appɣͼ2-6ʾһܵͨʱһضϣܽж

    ʽи迹͵迹ڵ迹ҲṩΧ188ע|188ƽ̨appԴ롢źλͬƵʷΧڳ봫䡣

    ʽ·ֱ NPN PNP 缫·188ע|188ƽ̨app·ӣԽԴͻ©188ע|188ƽ̨appС

 ͼ2-6 ʽ

    2.4

    ͼ 2-7ʾӿڲר188ע|188ƽ̨app IC оƬźŷRS-422 ׼Բ188ע|188ƽ̨appʽźſǿӦڸ١ݴ188ע|188ƽ̨appϣͬʱӦٶȿͿǿ188ע|188ƽ̨appص㡣

 ͼ2-7

     ˵188ע|188ƽ̨appֱ188ע|188ƽ̨appӿ⣬ںö೧188ע|188ƽ̨appͨŽӿڣPROFIBUS߽ӿڡ188ע|188ƽ̨appֱӽӦ188ע|188ƽ̨app磬ͨͨ188ע|188ƽ̨appʽʵ188ע|188ƽ̨appֵֵﲻ˵

 3 ټ188ע|188ƽ̨app

    ټҪ188ע|188ƽ̨appźţڶԱ188ע|188ƽ̨appźŽмͲȡSIMATIC S7188ע|188ƽ̨appȫϵвƷָ֧ټ188ע|188ƽ̨app飬Ӧڸֲͬ188ע|188ƽ̨appӦá

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