IC693MDL643RR/IC693MDL643
IC693MDL643RR/IC693MDL643
IC693MDL643RR/IC693MDL643
常開點就會閉合。即邏輯值為“1”Y0=(Y0+X001)×X000×X002只要按下啟動按鈕SB1後，X001的邏輯值為“1”，Y0邏輯值就為“1”。松開啟動按鈕SB1，X001的邏輯值為“0”但Y0邏輯值為“1”，Y0與X001是或的關係，保證了Y0邏輯值始終為“1”，即自鎖。直至按下停止按鈕或出現過載 (FR0動作），Y0的邏輯值才變為“0”。
通過上面的簡單示例可知，新手可能還未弄懂外部為常閉輸入時，經PLC內部輸入電路後邏輯值發生了“非”的變化。以及繼電器電氣控制固有思維影響，老手是出於疏忽。這雖然是低級錯誤，也易發生在程序編制過程中。
140DAI74000C Quantum
140DAI75300 Quantum
140DAI75300C Quantum
140DDI15310 Quantum
140DDI15310C Quantum
140DDI35300 Quantum
140DDI35300C Quantum
140DDI35310 Quantum
140DDI35310C Quantum
140DDI36400 Quantum
140DDI36400C Quantum
140DDI67300 Quantum
140DDI67300C Quantum
140DDI84100 Quantum
140DDI84100C Quantum
140DDI85300 Quantum
140DDI85300C Quantum
140DII33000 Quantum
140DII33000C Quantum
140DSI35300 Quantum
140DSI35300C Quantum
Quantum Digital Output Module 開關量輸出模板
140DAO84000 Quantum
140DAO84000C Quantum
140DAO84010 Quantum
140DAO84010C Quantum
140DAO84210 Quantum
140DAO84210C Quantum
140DAO84220 Quantum
140DAO84220C Quantum
140DAO85300 Quantum
140DAO85300C Quantum
140DDO15310 Quantum
140DDO15310C Quantum
140DDO35300 Quantum
140DDO35300C Quantum
140DDO35301 Quantum
140DDO35301C Quantum
140DDO35310 Quantum
140DDO35310C Quantum
140DDO36400 Quantum
140DDO84300 Quantum