車走到X2是光電開(kāi)關(guān)感應(yīng)開(kāi)門,X3是開(kāi)門到位信號(hào),當(dāng)車走進(jìn)倉(cāng)庫(kù)X4光電開(kāi)關(guān),感應(yīng)后關(guān)門-----x5是關(guān)門到位。
當(dāng)車從倉(cāng)庫(kù)出來(lái)時(shí)X4光電開(kāi)關(guān)感應(yīng)后開(kāi)門,開(kāi)門到位X3,車走去X2感應(yīng)關(guān)門--——關(guān)門到位X5.
x4既是關(guān)門信號(hào),又是開(kāi)門信號(hào),X3即是開(kāi)門信號(hào),又是關(guān)門信號(hào),如何編程?