| 摘要 |
PURPOSE:To improve economical efficiency and maintenance/inspection performances by displaying the content of data stored in the input/output (I/O) port register of a microcomputor when the operation thereof is checked. CONSTITUTION:Normal mode is set by selecting a select switch 15S to position '0' while I/O state display mode is set by selecting the select switch 15S to the other positions. Under normal mode, a processor 25 performs a predetermined control operation and outputs a display signal to a monitor display 20 and control output signals to controllers 27 at respective sections. Under I/O state display mode, the conditions of an input port data having a number corresponding to the select position of the select switch 15S are expressed on the monitor display 20. |
