Riveting machine

A method for diagnosing faults in an industrial machine, comprising:

• identifying a change in an I/O signal associated with the industrial machine;
• assigning to a state indicator associated with the I/O signal a value indicative of the change, the assignment configured to persist for a predetermined time period;
• generating diagnostic information comprising an indication of a current value of the I/O signal and a current value of the state indicator;
• outputting a diagnostic output based on the diagnostic information in a user interface of the industrial machine.

An industrial machine comprising a controller and a memory storing computer readable instructions configured to cause the controller to:

• identify a first state associated with the industrial machine;
• identify at least one second state associated with the industrial machine based on the first state;
• for each identified second state, determine a state time associated with the second state;
• determine a fault indicator condition responsive to determining, based on the at least one second state and the respective state times, that the industrial machine spent a time period different to a predetermined time period in at least one of the at least one second states;
• generate, responsive to determining the fault indication, diagnostic information comprising an indication of the one of the at least one second state;
• and
• output the diagnostic information in a user interface of the industrial machine.