Rockwell Automation Logix5000 Controllers Ladder Diagram Programming Manual - Manual (Page 15)

Program ladder diagram Chapter 1
For a structure within a structure, add .member_name.
Example:
Choose a Tag Name for an Operand
To Access: The tag name looks like this:
machine_on tag
bit number 1 of the one_shots tag
DN member (bit) of the running_seconds timer
mix member of the north_tank tag
element 2 in the recipe array and element 1,1 in the tanks array
element 2 in the preset array within the north_tank tag
part_advance member of element 1 in the drill array
A new routine contains a rung that is ready for instructions.
Use the Language Element toolbar to add a ladder diagram element.
Enter ladder logic
Rockwell Automation Publication 1756-PM008E-EN-P - October 2014 15