| 摘要 |
<p>PURPOSE:To easily confirm whether a cable is connected or not by confirming the processing part of an electronic circuit device whether the cable is connected or not. CONSTITUTION:A program instruction to confirm connection of the cable is stored in a storage part 6, and a processing part 5 takes out and executes this instruction to confirm connection of the cable. The processing part 5 sets the output of a write register 8 to the high level through a common bus and confirms its high level by a read register 9, and the processing part 5 sets the output of the write register 8 to the low level and confirms its low level by the read register 9. When the high level and the low level are confirmed as the result, it is judged that the cable is connected; but when they are not confirmed, it is judged that the cable is not connected. Thus, trouble to visually recognize a junction part is eliminated.</p> |
