One of the ways we utilize Structured Text to speed up machine development is through input and output assignment. In a typical system integration environment, one would have to create a rung dedicated for every input and output in order to pass the data to an internal tag of the PLC. The reason for this practice was discussed in a tutorial on tag aliasing we've released before. In short, by doing so, we can easily reassign and expand our tags as the program changes.
This is a companion discussion topic for the original entry at https://www.solisplc.com/tutorials/structured-text-example-for-input-output-tag-aliasing-assignments