We assume that any program we write will eventually need to be modified or maintained by a different programmer. Knowing this, how do we make it easier for another programmer to understand what we have programmed?
The answer is documentation.
RSLogix provides several methods for documenting ladder logic.
We have already used two of those methods: “adding descriptions” to each data table address and “adding symbols” to those same addresses.
Another way to document the ladder program is to use “rung comments” and “page comment”.