Koyo光洋電子:PLC、譯碼器(Encoder)、計數器(Counter)、編輯軟體(DirectSOFT)...等。Koyo:PLC/Tachometer/Proximity Sensor/Rotary Encoder/Electronic Counter/Programmable Cam Switch/DirectSOFT.Koyo-PLC:DL05:D0-05DR/D0-05DD,DL06:D0-06DR/D0-06DD1,DL105:F1-130DR,DL205:D2-230/D2-240/D2-250/D2-250-1/D2-260,DL305:D3-330/D3-330P/D3-340/D3-350,DL405:D4-430/D4-440/D4-450.