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7. Configuring the PLC Processor

Introduction to Allen Bradley PLCs - RSLogix 500 • 2m 23s

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  • 8. Data File Concepts

    The PLC processor contains several areas of memory.
    The program memory is where the program instructions are stored. Values of I/O points and internal memory, such as bit values, integer values, floating-point values, timers, and counters are organized in Data Files, separated by type of data.
    ...

  • 9. IO Concepts

    There are two data files, O0, which stores values from digital output cards, and I1, which stores values from digital output cards.
    The addresses within each data file are set by the I/O rack and module in which the I/O card resides.
    The MicroLogix 1100 comes with 10 digital inputs, 2 analog inp...

  • 10. Forcing File Concepts

    There are two special files, called forcing files, one for inputs and one for outputs.
    These files are used for troubleshooting or when I/O is not available, such as when a sensor fails.
    The forcing files allow the value supplied by the I/O subsystem to be over-written by the programmer in orde...