| 摘要 |
A laser oscillator control device includes a controller having a transmitter section and a receiver section; a laser oscillator having a transmitter section and a receiver section and communicating with the controller via a communication line; wherein the laser oscillator control device outputs a control signal from the controller to the laser oscillator, based on a status signal indicating operational state of the laser oscillator sent from the laser oscillator to the controller. The controller has an alternating signal transmitter circuit that generates an alternating signal that changes at a predetermined period, and sends this alternating signal to the laser oscillator, and the laser oscillator has a return signal transmitter circuit which generates a return signal that changes periodically in correspondence to the alternating signal from the controller, and sends this return signal to the controller. Furthermore, the controller has a monitoring circuit monitoring the return signal from the laser oscillator, and if it determines that there is an abnormality in the return signal, outputs a stop control signal for stopping laser beam irradiation by the laser oscillator. |
