Numerical control device and numerical control system

A numerical control system including a numerical control device which executes a numerical control program for controlling operations of a machine tool and a robot, and a robot control device which controls the robot based on the numerical control program, the numerical control device comprising:

• an analyzer that analyzes a robot numerical control command in the numerical control program;
• a safe operation setting selector that, in a case of the robot numerical control command analyzed by the analyzer including a safe operation setting, selects the safe operation setting in the robot numerical control command, and reads safe operation setting information corresponding to the safe operation setting;
• and
• a robot command signal generator that generates a robot command signal based on the robot numerical control command and the safe operation setting information, and
• wherein the robot control device comprises:
• an input analyzer that analyzes the robot command signal inputted from the numerical control device;
• a safe operation setting update controller that, in a case of the robot command signal analyzed by the input analyzer including a signal corresponding to the safe operation setting information, updates a safe operation setting of the robot, based on the signal corresponding to the safe operation setting information;
• and
• a servo controller that, if detecting operation of the robot deviating from the safe operation setting which is updated, executes processing of decelerating or stopping a servo motor of the robot.