Numerical controller with an I/O control unit that generates control information using a processor of the I/O control unit

An I/O control system, comprising:

• at least one motor configured to drive moving parts of a machine including a peripheral device;
• at least one amplifier configured to drive the motor;
• a numerical controller configured to instruct the amplifier so as to control the motor;
• an I/O control unit connected to the peripheral device;
• and
• communication lines to which the numerical controller, the amplifier, and the I/O control unit are connected, wherein
• the I/O control unit includes
• a communication interface configured to perform communication through the communication lines,
• an I/O interface configured to carry out input and output of signals to and from the peripheral device,
• a processor configured to
• generate control information for control over the peripheral device based on (i) servo control information received through the communication interface and (ii) input data received from the peripheral device through the I/O interface, and
• output the generated control information to the peripheral device through the I/O interface, and
• a timer referable to from the processor, wherein
• the I/O control unit is configured to output the generated control information to the I/O interface with a time resolution shorter than a control cycle for communication through the communication lines,
• the numerical controller includes a further processor different from the processor of the I/O control unit, and
• the further processor is configured to generate a part of the servo control information.