| 摘要 |
PURPOSE:To eliminate the burying work of both a power supply and a signal line, by connecting optically an external controller to a main body controller via an optical fiber. CONSTITUTION:An oil pump 5 supplies various types of oil and at the same time delivers an oil feeding quantity signal. An external controller 4 receives the oil feeding quantity signal from the pump 5 and transmits the oil feeding information to a main body controller 2. The controller 2 processes the data of the sales control, etc. of each customer on the basis of the oil feeding information given from the controller 4. The controller 4 is connected optically to the controller 2 via an optical fiber l. Then the power supply of the controller 4 is actuated with a data signal supplied from the controller 2 via the fiber l. |
