Browsing by Author "Snader, John Andrew"

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    Toward the development of a universal programming/documentation system for programmable controllers on a host microcomputer
    Snader, John Andrew (Virginia Tech, 1985-10-04)
    This thesis presents methodologies for the operation of a programming/documentation system for a Texas Instruments Model 530 programmable controller. The methodologies include: 1) a means to store information about the structure of a ladder diagram and display the ladder diagram on a CRT screen, 2) a means to convert the ladder diagram information into its equivalent Boolean code, and 3) a means to convert Boolean code into its equivalent ladder diagram information.