A model-based human machine interface (HMI) system deployable in a system-under-control (SUC), the SUC being an engineered system comprising multiple SUC components , comprising: a plurality of output devices each having output capabilities that include at least one unique output capability level to render and present for user interaction and interfacing a given textual or graphic display; a plurality of interfaces to multiple programmable logic interfaces (PLCs), wherein the PLCs are distributed throughout the SUC to sense various operational conditions of at least the SUC components , and the PLCs generate PLC data reflective of the sensing; and a computing device disposable in signal communication with the output devices , the computing device comprising a semantics library that is configured to receive SUC component models , the SUC component models being engineering models of the SUC components each having an output format; wherein the SUC component models are updateable in real-time wherein the semantics library is configured to: execute algorithms stored in the semantics library for analyzing the PLC data with regard to the SUC component models , wherein the PLC data is classified and contextualized with regard to the SUC component models , compute, from the classified and contextualized PLC data, the SUC component models in their current operational condition in accordance with the algorithms , transmit each of the computed SUC component models to one or more of the plurality of output devices , wherein the one or more of the plurality of output devices are selected based on a correlation between the output capabilities of the plurality of output devices and the output format of the SUC component models. a plurality of output devices each having output capabilities that include at least one unique output capability level to render and present for user interaction and interfacing a given textual or graphic display; a plurality of interfaces to multiple programmable logic interfaces (PLCs), wherein the PLCs are distributed throughout the SUC to sense various operational conditions of at least the SUC components , and the PLCs generate PLC data reflective of the sensing; and a computing device disposable in signal communication with the output devices , the computing device comprising a semantics library that is configured to receive SUC component models , the SUC component models being engineering models of the SUC components each having an output format; wherein the SUC component models are updateable in real-time wherein the semantics library is configured to: execute algorithms stored in the semantics library for analyzing the PLC data with regard to the SUC component models , wherein the PLC data is classified and contextualized with regard to the SUC component models , compute, from the classified and contextualized PLC data, the SUC component models in their current operational condition in accordance with the algorithms , transmit each of the computed SUC component models to one or more of the plurality of output devices , wherein the one or more of the plurality of output devices are selected based on a correlation between the output capabilities of the plurality of output devices and the output format of the SUC component models. execute algorithms stored in the semantics library for analyzing the PLC data with regard to the SUC component models , wherein the PLC data is classified and contextualized with regard to the SUC component models , compute, from the classified and contextualized PLC data, the SUC component models in their current operational condition in accordance with the algorithms , transmit each of the computed SUC component models to one or more of the plurality of output devices , wherein the one or more of the plurality of output devices are selected based on a correlation between the output capabilities of the plurality of output devices and the output format of the SUC component models. <EOS>