Ka whakamahia i roto i te Hyundai excavator parts pressure sensor 31Q4-40810
Nga korero
Momo hokohoko:Hua wera 2019
Wāhi Taketake:Zhejiang, Haina
Ingoa Waitohu:PURU RERE
Pūtāhui:1 Tau
Momo:pūoko pēhanga
Kounga:Kounga-Teitei
Ka whakaratohia he ratonga muri-hoko:Tautoko Online
Tapeke:Tarapi kūpapa
Wā tuku:5-15 Ra
Whakataki hua
I enei wa, ka taea e te PLC te tango i nga tohu encoder me nga tohu puoro kaore he whakanui, na he aha te ahuareka o te "puna" me te "whakaheke"?Ko te putanga o te PLC anake ka whai i nga ariā o te "puna" me te "leakage".
Ko te tikanga, haunga mo te Japanese PLC, kaore e tika kia whakamahia e etahi atu PLC nga whakapoto penei i te "puna" me te "whakaheke", engari ka taea te whakamahi tika a PNP me te NPN.
Ko te PNP he raina ngaohiko iti a te iwi, a ko te NPN he raina ngaohiko teitei.I te mea e tika ana tenei hononga, te ahua nei kare he aha mena ka huri ke nga kaupapa o te "puna" me te "whakaheke".Heoi ano, ko tetahi atu ariā "positive logic and negative logic" kei te he ano, ka huri te tohu.
Te arorau pai me te arorau kino
I roto i nga ara iahiko momo PNP, ko te tauranga noa o te tuku hiko me te tohu kei te taumata iti o te 0V.Ina he iti te whakaurunga, karekau he rerekee ngaohiko me te tauranga noa, no reira karekau he whakaputanga tohu whakawhiti whakakaha (he 0 te rahinga mamati).I te wa anake kei te taumata teitei te whakaurunga, he rereke nga ngaohiko me te tauranga noa me te tohu whakakaha kua puta ki te taumata teitei.Ko tenei aratau matihiko (he 1 te rahinga matihiko) e whai hua ana i te wa e eke ana te tohu ki te taumata teitei ka kiia ko te PNP positive logic.
I roto i te ara iahiko NPN, kei te taumata teitei te tauranga noa o te tuku hiko me te tohu (te ahuatanga o tenei iahiko whakakaha).I te mea kei te taumata teitei te whakaurunga, kaore he rereketanga ngaohiko i waenga i te whakauru me te putanga, na reira kaore he putanga tohu whakawhiti (ko te rahinga mamati ko 0).I te wa e iti ana te whakaurunga (te hanga i te kohanga), ka puta he whakaputanga tohu whakawhiti, ka whai hua tenei tohu (te rahinga matihiko he 1) te aratau mamati i te taumata iti, e kiia nei ko te NPN kino arorau.