| 摘要 |
An error signal generator for generating a plurality of error signals for various control values, comprises a time controller for sequentially and periodically generating a plurality of status signals, the number of which corresponds to the number of the control values. A read-out signal generator receives reference signals and/or detection signals for generating a read-out signal in response to one of the reference signals selected by the associated status signal. There is provided a preset memory storing a plurality of preset digital values for the control values and responsive to the read-out signal so as to output to a bus the preset digital value designated by the associated status signal. A count memory responds to each status signal so as to read out the data to the bus from one of the memory areas designated by the associated status signal and then is rewritten with the data on the bus into the same memory area. An adder operates to periodically subtract a value of "1" from the data on the bus and to return the result of the subtraction to the bus. An error memory responds to each of the detection signals so as to write the data on the bus into one of the memory areas designated by the associated status signal. The respective memory areas provide the data stored therein as the error signals. |
