| 摘要 |
PURPOSE:To constitute the titled controller so that the number of input points is not limited by a physical condition of the controller, and also to execute easily ab increase of the number of input points by inputting plural digital signals as one analog signal to the controller. CONSTITUTION:In accordance with a set state of (n) pieces of switches D1-Dn, a D/A converter 1 outputs an analog input signal Vi to a controller 2. That is to say, in accordance with the set state of the switches D1-Dn, the analog input signal Vi is determined clearly. In the controller 2, this input analog input signal Vi is received by an analog inputting circuit 3, converted to a digital signal by an A/D converter 4, stored in a register 5, stored in a memory 9, and restored to the set state of the switches D1-Dn by referring to the contents of the memory 9 or the contents of the register 5 in a CPU 6. Therefore, the set state of many switches can be inputted without being subjected to a physical restriction. |
