The structure of the Input file is the same as the Output file.
File I1 represents the physical input device addresses possible.
Notice that there are six 16-bit input words available, representing the possible 96 inputs for the PLC.
In a later lesson, we will add descriptions and symbols for the input addresses.
The actual number of inputs and outputs in a MicroLogix 1100 system depends on the hardware configuration chosen for the PLC and the number and type of I/O cards installed.
For this program example, only the embedded I/O will be considered.
Other features of the data file window for inputs and outputs will be demonstrated in a later lesson, such as the Forces button.