| 摘要 |
A digital controller obtains manipulation variable corresponding to a difference between a process variable and its set value based on a predetermined function and parameter. A front panel of the digital controller comprises: first display means for displaying in analog form at least one of the process variable, the set value, and the manipulation variable; second display means for displaying a numerical value of at least one of the process variable, the set value, and the maniplulation variable; first selecting means for selecting the set value, secont selecting means for selecting the manipulation variable.
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