Mazuva ano, PLC inogona kugamuchira encoder uye sensor masaini pasina amplifier, saka zvinonakidza zve "sosi" uye "dhizaini"? Chete kubuda kwePLC ichave nePfungwa dze "Tsime" uye "kubhururuka".

Muchokwadi, kunze kweJapan plc, hazvidikanwe kuti mamwe maPLD kuti ashandise zvipfupiso se "sosi" uye "dhizaini", npn uye npn inogona kushandiswa zvakananga.

PNP ndiyo yakaderera-voltage yeruzhinji mutsara, uye npn ishe-voltage yeruzhinji mutsara. Chero bedzi kubatana uku kwakarurama, zvinoita sekunge hazvina basa kana pfungwa dze "sosi" uye "dhiza" dzadzoreredzwa. Nekudaro, imwe pfungwa "yakanaka pfungwa uye isina kunaka pfungwa" iri kutadzawo, iyo ichaita kuti chiratidzo chibatwe.

Yakanaka pfungwa uye yakaipa pfungwa

MuPNP-mhando matunhu, iyo yakajairika terminal yekupa simba uye chiratidzo iri pane yakaderera chikamu che0V. Kana iyo yekuisa iri padanho rakaderera, hapana mutsauko weVoltage neyakajairwa terminal, saka hapana Akakwirisa Switching Signal Signut (digital huwandu ndeye 0). Chete kana iyo yekuisa iri padanho repamusoro, pane musiyano weVoltge neiyo yakajairika terminal uye yakamisikidzwa switching chiratidzo ndeyekubuda pane yakakwirira. Iyi digital mode (yedhijitari huwandu ndeye 1) iyo inoshanda kana chiratidzo chiri padanho repamusoro hunonzi PNP yakanaka pfungwa.

MuDunhu reNPN, iyo yakajairika terminal yekuisa simba uye chiratidzo chiri padanho repamusoro (hunhu hwechitima ichi amplifier). Kana iyo yekuisa iri padanho repamusoro, hapana musiyano weVoltage pakati peiyo yekuisa uye yekubuda, saka hapana chinoshandura chiratidzo chekubuda (iyo digital huwandu ndeye 0). Chete kana iyo yekuisa iri padanho rakaderera (kugadzira funnel), pane signing signal chiratidzo, uye ichi huwandu hwechiratidzo (dhijitari remuti pane yakaderera nhanho, iyo inonzi nPN isina kunaka pfungwa.