問(wèn)答題
【簡(jiǎn)答題】TOF型定時(shí)器的定時(shí)規(guī)律怎樣?
答案:
TOF型定時(shí)器俗稱延時(shí)斷開(kāi)定時(shí)器,定時(shí)規(guī)律是當(dāng)驅(qū)動(dòng)定時(shí)器線圈時(shí)其常點(diǎn)開(kāi)始導(dǎo)通,當(dāng)斷開(kāi)驅(qū)動(dòng)信號(hào)開(kāi)始計(jì)時(shí),當(dāng)時(shí)間經(jīng)過(guò)值到達(dá)預(yù)...