Ladder logic modeling and simulation

A computing device, comprising:

• a processor to:
• create a model comprising a ladder logic diagram, when creating the model, the processor is to:
• insert a plurality of rail objects into the model, and
• connect the plurality of rail objects with at least one rung object,
• when connecting the plurality of rail objects with the at least one rung object, the processor is to:
• insert at least one block between two or more of the plurality of rail objects, the at least one block being included in the ladder logic diagram and representing a function corresponding to the model, the function being based on a differential equation system or a difference equation system,
• create a functional connection between the at least one block and another block included in the ladder logic diagram by configuring the other block to include a parameter corresponding to the at least one block, and
• the functional connection being created without connecting the at least one block and the other block with a connector line in the ladder logic diagram,
• infer a value of a first attribute, associated with the at least one block, based on a value of a second attribute associated with the other block,
• execute the model to simulate behavior of a dynamic system, device, or process, when executing the model, the processor is to:
• execute the ladder logic diagram;
• and
• output results of the simulation of the behavior of the system, device, or process based on executing the model.

One or more non-transitory computer-readable storage media that stores instructions, the instructions comprising:

• one or more instructions that, when executed by a processor, cause the processor to:
• create a model comprising a ladder logic diagram, the one or more instructions to create the model cause the processor to:
• insert a plurality of rail objects into the model, and
• connect rung objects to the plurality of rail objects, the rung objects including a plurality of blocks,
• each of the plurality of blocks being positioned between the plurality of rail objects,
• each of the plurality of blocks representing a function corresponding to the model,
• at least one block, of the plurality of blocks, being included in the ladder logic diagram and functionally connected to another block included in the ladder logic diagram based on a functional association between the at least one block and the other block,
• the at least one block being functionally connected to the other block while being visually unconnected in the ladder logic diagram when the ladder logic diagram is presented for display,
• the at least one block corresponding to a differential equation system or a difference equation system;
• infer a value of a first attribute, associated with the at least one block, based on a value of a second attribute associated with the other block;
• and
• execute the model to generate results that represent behavior of the model.