Servo driver, servo system, and sensor recognition processing method

A servo driver configured to drive a first motor,

• wherein the first motor includes
• a motor body including an output axis, and
• an encoder including a signal generation unit configured to detect an operation of the motor body driven by the servo driver and generate a feedback signal indicating a detected operation,
• a first sensor configured to detect a parameter relating to displacement of a first drive target driven via the output axis of the first motor is connected to the encoder via a sensor cable, and via this connection, a detection signal from the first sensor is transmitted to the encoder and the first sensor is supplied with electric power from the encoder via the sensor cable, and
• the servo driver acquires, via a communication cable connected to the encoder, the feedback signal generated by the signal generation unit and the detection signal from the first sensor transmitted via the sensor cable.

A servo system comprising:

• a first servo driver configured to drive a first motor;
• and
• a second servo driver communicatively connected to the first servo driver and configured to drive a second motor,
• wherein the first servo driver is configured to receive a detection signal from a first sensor configured to detect a parameter relating to displacement of a first drive target driven via an output axis of the first motor,
• the second servo driver is configured to receive a detection signal from a different sensor configured to detect a different parameter relating to displacement of the first drive target,
• the second servo driver is configured to, in a case in which the second servo driver receives the detection signal from the different sensor when a first predetermined operation of driving only the output axis of the first motor to displace the first drive target is performed in a state in which sensor recognition processing is not complete, transmit to the first servo driver information relating to the different sensor for enabling the first servo driver to recognize the different sensor as a different corresponding sensor associated with the first servo driver, and
• the first servo driver is configured to recognize the different sensor as the different corresponding sensor on the basis of the information relating to the different sensor.

A sensor recognition processing method executed by a servo system including a first servo driver configured to drive a first motor and a second servo driver communicatively connected to the first servo driver and configured to drive a second motor, the first servo driver being configured to receive a detection signal from a first sensor configured to detect a parameter relating to displacement of a first drive target driven via an output axis of the first motor, and the second servo driver being configured to receive a detection signal from a different sensor configured to detect a different parameter relating to displacement of the first drive target, the method comprising:

• transmitting, in a case in which the second servo driver receives the detection signal from the different sensor when a first predetermined operation of driving only the output axis of the first motor to displace the first drive target is performed in a state in which sensor recognition processing is not complete, from the second servo driver to the first servo driver information relating to the different sensor for enabling the first servo driver to recognize the different sensor as a different corresponding sensor associated with the first servo driver, and
• recognizing the different sensor as the different corresponding sensor on the basis of the information relating to the different sensor by the first servo driver.