| 摘要 |
PROBLEM TO BE SOLVED: To prevent the operation error of a signal light change-over switch and to prevent the division of work. SOLUTION: The keyboard 21 of a booth collection machine 3 is provided with a work change-over switch 22 and a work auxiliary switch 31. The operation modes of 'cut', 'red' and 'green' are displayed on the work change-over switch 22, and a work state and the display color of a signal light are simultaneously switched. The work auxiliary switch 31 is for deciding the validity of switching at the time of changing over the work change-over switch 22 from a work state to work stop. Thus, work division can be prevented even if the work change-over switch 22 is erroneously operated at the time of interrupting work with such constitution. Namely, recognition is displayed on a screen when the work change-over switch 22 is erroneously turned to the position of 'cut' at the time of turning it from 'green' to 'red' while work is interrupted. Thus, work division can be prevented by executing a cancel operation. |
