In the last lesson, we briefly described the data files. Now, we will describe these files in more depth and show how they are used.
Note that each data file is described by a letter followed by a number.
The letter indicates the type of data represented by that file, and the number represents the file number.
For a MicroLogix 1100, data file numbers 0 to 255 are allowed. Files 0 through 8 are predefined. The remaining file numbers can be configured to any data type, except Input and Output.
Output file 0 and Input file 1 are defined to hold values from physical I/O cards.
All of the data files are presented in much the same way. The Output file holds values that are associated with physical output cards. For a MicroLogix 1100, up to 64 outputs, or four 16-bit output words, can be ...
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 f...
Binary files are structured very much in the same way as the Input and Output files.
Upon inspection, the only obvious difference is that the Binary file window does not have the Force button at the bottom of the window.
The other difference is in the way the address in the Binary file is show...
