| 摘要 |
PURPOSE:To cope with the change in scale of a program setter, by expressing a set signal in terms of a correct set value in accordance with the scale stored in the memory. CONSTITUTION:A program setter P is connected to a controller C, the scale of the controller is taken sufficiently wide, e.g. 0-1,600 deg.C, the minimum value is taken as 0 deg.C and the maximum value as 500 deg.C by referencing a display 5 with a set switch 4 and the result is stored in a memory 6. A CPU7 expresses a set signal in terms of to what temperature it corresponds, compares the result with an input signal and outputs a control signal e via an output circuit 8. Generally, the width of the output signal of the program setter P is taken constant, the set value to be obtained is operated with the CPU7 from the minimum and maximum values of the scale and the set signal of the program setter P, the set value and the input signal are compared and operated to generate a control signal. |
