| 摘要 |
<p>PURPOSE:To freely install I/O equipment and a main control part by installing only an alarm sound generator at a place which is convenient to an operator. CONSTITUTION:The alarm sound generation system consists of the I/O equipment 1 and alarm sound generator 2, and the sensor 3 of the I/O equipment 1 detects an error, and the CPU 4 controls the equipment and performs an interruption process with the signal from the sensor 3. The I/O controller 5 is controlled by the interruption process by the CPU 4 and controls a transmitter 6 with its output to perform FM transmission. The receiver 7 of the alarm sound generator 2 receives the FM wave from the transmitter, places the I/O controller 8 in operation with the signal from the receiver 7, and drives a speaker 9 with the output of the I/O controller 8 to generate an alarm sound.</p> |
