| 摘要 |
<p>PURPOSE:To automatically detect abnormality by executing continuously an abnormality detection processing thereafter in accordance with an external instruction, and executing a warning, in case it is detected that there is abnormality. CONSTITUTION:A CPU 10 reads out the present status information through an interface 40, and decides whether generation of abnormality is shown or not. In the case an operator operates a key of a keyboard 60, and CPU 10 executes an arithmetic processing related to information subjected to key input. During this time, the abnormality detection processing is suspended, but after the arithmetic processing is finished, an executing means is migrated, and the abnormality detection processing is restarted. In such a state, in case it is detected that there is abnormality in a programmable controller, the CPU 10 reads in data for showing the contents of abnormality from the programmable controller through the interface 40, reads out message information corresponding to this data from a system program memory 20, and displays it on a display screen of a display device 70. Also, the CPU 10 turns on a buzzer 50, generates a warning sound, and continues it.</p> |
