A communication apparatus includes a communication unit configured to communicate with a control apparatus, which has a recording unit and executes processing in accordance with a command written to the recording unit, an accepting unit configured to accept selection of a command by a user, and a writing unit configured to write the selected command to the recording unit, and the communication apparatus comprises: a sensing unit configured to sense connection to the control apparatus via the communication unit; a determination unit configured to determine whether the recording unit has been set to a write inhibit state if the connection has been sensed by the sensing unit; and a notification unit configured to notify the user of the fact that the recording unit has been set to the write inhibit state, if the determination unit determines that the recording unit has been set to the write inhibit state.