| 摘要 |
PURPOSE:To easily and safely perform the operation by providing a display part on which an output part to be checked, the indication of checking operation, the checked result, etc., are displayed and select switches with which the selecting operation is performed in accordance with the display of the indication. CONSTITUTION:When a controller (CPU) of a working machine is set to the operatable state and a select switch S1 is turned on, the indication of output checking operation is displayed on a display part 3, and then, select switches S1-S4 are operated in accordance with this indication. When a concrete output part 5 to be checked is displayed checking of the output part 5 is designated by simultaneous turning-on of select switches S1 and S3 which are not adjacent to each other and the prescribed output part 5 is operated by the output from the controller (CPU). Normalcy or abnormality of the output part 5 is displayed on the display part 3. Thus, the control constitution of a checker 2 is simplified and the operation is easy and safe because it is performed in the checker 2. |
