Production system

A production system comprising:

• a workpiece transfer device that transfers a workpiece;
• a robot;
• a rail on which the robot is placed;
• a robot moving device that moves the robot along the rail;
• and
• a system controller comprising a processor configured to function such that while the workpiece is being transferred by the workpiece transfer device, the robot moving device moves the robot along the rail and the robot performs an operation while following the workpiece,
• wherein the processor is configured to:
• determine whether a position of the workpiece relative to the robot has exceeded an operable range in which the robot is capable of performing work on the workpiece while the robot is moving along the rail to follow the workpiece;
• and
• perform, in a case of determining that the position of the workpiece relative to the robot has exceeded the operable range, position compensation by controlling at least one of driving of the workpiece transfer device or driving of the robot moving device such that the position of the workpiece relative to the robot becomes within the operable range,
• the operable range comprises at least two ranges including a first operable range and a second operable range that is larger than the first operable range, and
• the processor sets a larger amount of position compensation in a case of determining that the position of the workpiece relative to the robot has exceeded the second operable range than in a case of determining that the position of the workpiece relative to the robot has exceeded the first operable range.