Computerized diagnostic and monitoring system

An apparatus for indicating levels of sensed parameters related to machine operation, warning conditions, and fault conditions on any of a plurality of machines having an instrument panel and a plurality of switch-type inputs and diagnostic inputs, said instrument panel operating in one of a plurality of modes including a normal display mode, a service mode, a status mode, and a numeric readout mode, comprising:

• means for producing an identification code, each of the plurality of machines having a unique identification code for identifying the machine to which the apparatus is connected;
• a plurality of diagnostic sensor means for sensing a plurality of parameter levels and responsively producing a plurality of diagnostic sensor signals;
• a plurality of gauge means for indicating a level of the sensed parameters;
• a plurality of symbol means for identifying the sensed parameter being indicated on each of said gauge means, said plurality of gauge and symbol means being substantially visible to an operator only when illuminated;
• means for selecting the normal display mode;
• means for selecting the numeric readout mode;
• control means for receiving said identification code and selectively illuminating one or more of said plurality of gauge and symbol means in response to said identification code and the instrument panel being in the normal display mode or the numeric readout mode;
• a plurality of warning lights, each of said warning lights being associated with one of the switch-type inputs;
• means for selecting the status mode;
• display means for selectively indicating a pin code for each switch-type input having a fault condition;
• means for flashing each of said warning lights having an associated switch-type input in the fault condition in response to the instrument panel being in the status mode;
• means for selecting the service mode;
• means for indicating a pin code in response to each of the diagnostic inputs having a present or a previous fault condition in response to the instrument panel being in the service mode;
• a digital display;
• means for selecting one of said plurality of diagnostic sensor signals corresponding to the one or more of said plurality of gauge and symbol means illuminated in response to said identification code;
• and
• means for displaying the selected sensor signal in digital form on said digital display in response to the instrument panel being in the numeric readout mode.