Muri iki gihe, PLC irashobora kwakira inyandiko na sensor ibimenyetso bidafite amplifier, none se bishimishije "n" "imiyoboro"? Gusa umusaruro wa PLC uzagira ibitekerezo bya "isoko" na "kumeneka".

Mubyukuri, usibye Abayapani plc, ntabwo ari ngombwa kubandi PLC kugirango bakoreshe amagambo ahinnye nka "Inkomoko" n "" Kunywa ", ariko PNP na NPN birashobora gukoreshwa muburyo butaziguye.

PNP numurongo wa voltage muto, kandi NPN numurongo wa voltage muremure. Igihe cyose iyi sano ari yo, bisa nkaho ntacyo bitwaye niba ibitekerezo bya "isoko" n "" imiyoboro "byahinduwe. Ariko, ikindi gitekerezo "logique nziza kandi kibi" nacyo ni kibi, kizatera ikimenyetso kimaze guhinduka.

Logique nziza na logique mbi

Muri PNP-Ubwoko bwanditse, Itunganijwe risanzwe ryo gutanga amashanyarazi ni ikimenyetso kiri kurwego rwo hasi rwa 0V. Iyo ibyinjijwe biri kurwego rwo hasi, nta tandukaniro vol voltage hamwe na terminal isanzwe, kuburyo ntakimenyetso cyo gufungura ibimenyetso bisohoka (ubwinshi bwa digitale ni 0). Gusa iyo ibyinjijwe biri kurwego rwo hejuru, hari itandukaniro rya voltage hamwe na terminal isanzwe hamwe nikimenyetso cyo guhinduranya kirimo gusohoka kurwego rwo hejuru. Iyi miterere ya digitale (ingano ya digitale ni 1) ikora neza mugihe ibimenyetso biri kurwego rwo hejuru rwitwa PNP logique nziza.

Mukarere ka NPN, imperuka isanzwe yo gutanga amashanyarazi nikimenyetso kiri kurwego rwo hejuru (biranga iyi oflifier; Iyo ibyinjijwe ari kurwego rwo hejuru, nta tandukaniro vol voltage hagati yinjiza nibisohoka, rero ntamahindura ibimenyetso bisohoka (ubwinshi bwa digitale ni 0). Gusa iyo ibyinjijwe biri kurwego rwo hasi (gukora feri), hari ibimenyetso byerekana ibimenyetso, kandi iki kimenyetso ni ikintu cyiza (cyitwa ubuyobozi bwa digitale.