| 摘要 |
PURPOSE:To continue a setting value indicating function at a setting operation and display unit even though an abnormal state occurs at an interface. CONSTITUTION:A display memory 5 is arranged at a setting operation and display unit 1, and setting data to be sent to a arithmetic portion 2 are branched and stored in the display memory 5. The setting operation and display unit 1 takes out setting data from the display memory 5 and displays the data. Thus, even though an abnormal state occurs at an interface 3, the function to display the setting values on the setting operation and display unit 1 is not lost. |
