A multiaxial motor control system (100, 110, 200, 300, 400, 500) configured to control motors for a plurality of shafts included in a multiaxial machine, the multiaxial motor control system comprising: a plurality of motor control devices (201, 202, 203) each configured to drive a corresponding one of the motor; and a controller having network connection with the motor control devices (201, 202, 203) and configured to transmit a command signal for control of the motor control devices (201, 202, 203), wherein the motor control devices (201, 202, 203) each include a communication controller configured to receive the command signal, transmit the received command signal, and determine whether or not the command signal is received normally, a rotation controller configured to generate a torque command for operation of the corresponding one of the motors, and a drive unit (25, 55) configured to generate a drive voltage for electrification to drive the corresponding one of the motors in accordance with the torque command wherein when at least one of the motor control devices (201, 202, 203) detects failure in reception of the command signal, the at least one of the motor control devices (201, 202, 203) outputs the torque command for braking torque to stop the corresponding one of the motors, characterized in that the controller is configured to transmit a command signal for control of each of the motor control devices (201, 202, 203) at a period as N times of a reference period for control of the motor and communication by each of the motor control devices (201, 202, 203), where N is a natural number, and wherein the plurality of shafts is mechanically linked, wherein the link is a gantry structure, and wherein the at least one of the motor control devices (201, 202, 203) having detected the failure disconnects electrification to a corresponding one of the motors, and at least one of the motor control devices (201, 202, 203) not disconnecting electrification to the motor outputs the torque command for the braking torque preset in the rotation controller to stop the motor, and/or outputs braking torque according to a command signal received normally from the controller to stop the motor, and the braking torque set in the rotation controller has an amount satisfying a condition that a sum of the braking torque output from the at least one motor control device (201, 202, 203) not disconnecting electrification to the corresponding one of the motors is equal to or less than allowable maximum braking torque of the multiaxial motor control system. a plurality of motor control devices (201, 202, 203) each configured to drive a corresponding one of the motor; and a controller having network connection with the motor control devices (201, 202, 203) and configured to transmit a command signal for control of the motor control devices (201, 202, 203), wherein the motor control devices (201, 202, 203) each include a communication controller configured to receive the command signal, transmit the received command signal, and determine whether or not the command signal is received normally, a rotation controller configured to generate a torque command for operation of the corresponding one of the motors, and a drive unit (25, 55) configured to generate a drive voltage for electrification to drive the corresponding one of the motors in accordance with the torque command wherein when at least one of the motor control devices (201, 202, 203) detects failure in reception of the command signal, the at least one of the motor control devices (201, 202, 203) outputs the torque command for braking torque to stop the corresponding one of the motors, characterized in that the controller is configured to transmit a command signal for control of each of the motor control devices (201, 202, 203) at a period as N times of a reference period for control of the motor and communication by each of the motor control devices (201, 202, 203), where N is a natural number, and wherein the plurality of shafts is mechanically linked, wherein the link is a gantry structure, and wherein the at least one of the motor control devices (201, 202, 203) having detected the failure disconnects electrification to a corresponding one of the motors, and at least one of the motor control devices (201, 202, 203) not disconnecting electrification to the motor outputs the torque command for the braking torque preset in the rotation controller to stop the motor, and/or outputs braking torque according to a command signal received normally from the controller to stop the motor, and the braking torque set in the rotation controller has an amount satisfying a condition that a sum of the braking torque output from the at least one motor control device (201, 202, 203) not disconnecting electrification to the corresponding one of the motors is equal to or less than allowable maximum braking torque of the multiaxial motor control system.