Motor control system, robot system, and communication method for motor control system

A robot system, comprising:

• a motor control system comprising first processing circuitry configured to control a motor, an upper-level communication path connecting an upper-level communication port of the first processing circuitry to second processing circuitry, the second processing circuitry being configured to send an instruction to the first processing circuitry via the upper-level communication path, and a lower-level communication path connecting a lower-level communication port of the first processing circuitry to a plurality of devices connected in series to each other, wherein the plurality of devices include rotational angle detection circuitry configured to detect a rotational angle of the motor, and output circuitry configured to output at least one piece of associated information among a first piece of associated information and a second piece of associated information, the first piece of associated information being associated with the motor and being different from the rotational angle of the motor, the second piece of associated information being associated with an industrial device associated with the motor, and the first processing circuitry is further configured to perform predetermined processing based on the rotational angle and the at least one piece of associated information received via the lower-level communication path, and send a result of the predetermined processing to the second processing circuitry via the upper-level communication path;
• and
• a robot.

A communication method for a motor control system, comprising:

• implementing, via an upper-level communication path, communication between an upper-level communication port of first processing circuitry that is configured to control a motor and second processing circuitry that is configured to send an instruction to the first processing circuitry via the upper-level communication path;
• implementing, via a lower-level communication path connecting a plurality of devices in series to each other, communication between the plurality of devices, the plurality of devices including rotational angle detection circuitry connected to a lower-level communication port and configured to detect a rotational angle of the motor, and output circuitry configured to output at least one piece of associated information among a first piece of associated information and a second piece of associated information, the first piece of associated information being associated with the motor and being different from the rotational angle of the motor, the second piece of associated information being associated with an industrial device associated with the motor;
• and
• causing the first processing circuitry to perform a predetermined processing based on the rotational angle and the at least one piece of associated information received via the lower-level communication path and to send a result of the predetermined processing to the second processing circuitry via the upper-level communication path.

A motor control system, comprising:

• first processing circuitry configured to control a motor;
• an upper-level communication path connecting the first processing circuitry to second processing circuitry, the second processing circuitry being configured to send an instruction to the first processing circuitry via the upper-level communication path;
• and
• a lower-level communication path connecting a lower-level communication port of the first processing circuitry to a plurality of devices connected in series to each other,
• wherein the plurality of devices include rotational angle detection circuitry configured to detect a rotational angle of the motor, and output circuitry configured to output at least one piece of associated information among a first piece of associated information and a second piece of associated information, the first piece of associated information being associated with the motor and being different from the rotational angle of the motor, the second piece of associated information being associated with an industrial device associated with the motor, and the first processing circuitry is further configured to reduce a load associated with the second processing circuitry based on the rotational angle and the at least one piece of associated information obtained via the lower-level communication path.