| 摘要 |
PURPOSE:To elevate the reliability with an automatic accurate test, by positioning a rotary switch (RSW) at the starting point with a light receving transistor (RTr) depending on variations in the quantity of light of an LED on the basis of the sequence of a CPU. CONSTITUTION:An RSW2 is connected to a speed compensator 1 and the base section of a mobile contact 3 thereof 2 is mounted on a rotating shaft 5 of a step driving mechanism 4. A working arm rod 6 having an RTr 7 is mounted on the shaft 5 and moreover, a stationary wheel plate 8 is provided having a plurality of LEDs 9a, 9b... are connected to an input/output interface IF11 equipped with a CPU10. The IF11 is further connected to a quantity of light discriminator/controller 12, the TRr 7 and the mechanism 4. A control program is inputted into the CPU10 and the IF10 runs a control current according to data of the CPU10. The control currents of the LEDs 9a... are returned to a post light receiving 12 with RTr 7 to be computed with the CPU10 and transmitted to the device 12 again. With such an arrangement, as the contact 3 turns, automation can be made smply by determining the position of the RSW2 beforehand. |
