A16B-1210-0510
A16B-1210-0510
光電開關與接近開關類似,不再詳述,下面介紹一下增量式光電編碼器。
1.光電編碼器的信號輸出有集電極開路輸出、總線驅動輸出(差分輸出)、推挽輸出及電壓輸出。因集電極開路輸出,易于電平匹配,外引線少,比較適合與PLC配合使用;
2.光電編碼器是精密光電器件,內部的光學棱鏡、光敏元件等都脆弱易損,使用時千萬不要受到撞擊;
3.與PLC連接使用的是高速數字輸入口,要根據編碼器分辨率和轉速,在軟件中配置合適的輸入點濾波時間,可直接選0.2 uS進行測試,選的時間長,可能會丟脈沖;
4.使用前需查閱廠商手冊,下面以PNP增量型編碼器與SMART PLC的連接為例
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