Work machine

A work machine comprising:

• a body;
• a work implement attached to the body;
• and
• a controller that executes a transmission process of transmitting machine-body data to an external apparatus installed outside the body,
• wherein the controller is configured to:
• measure a speed of communication with the external apparatus,
• place a functional restriction on the transmission process when the speed of communication is lower than a predetermined required speed,
• reinforce the functional restriction on the transmission process as the speed of communication lowers,
• reinforce the functional restriction on the transmission process when a state of the work machine is an operation state, as compared to a case where the state of the work machine is not the operation state,
• reinforce the functional restriction on the transmission process as the speed of communication lowers, by executing a data-reduced transmission process of transmitting the machine-body data while regularly thinning out the data at predetermined time intervals, when the speed of communication is lower than the required speed but equal to or higher than a predetermined allowable speed, and executing a transmission suspension process of suspending the transmission of the machine-body data, when the speed of communication is lower than the allowable speed, and
• reinforce the functional restriction on the transmission process when the state of the work machine is the operation state, as compared to the case where the state of the work machine is not the operation state, by making a data reduction amount, in the data-reduced transmission process executed when the state of the work machine is the operation state, greater than the data reduction amount in the data-reduced transmission process executed when the state of the work machine is not the operation state.