Rockwell Automation AutoMax Enhanced Ladder Editor - Manual (Page 47)

5Ć1
5.0 Editing Programs Online
Editing a program online lets you modify ladder logic and the initial
values of variables as well as set, force, and unforce variables. You
can be connected to a Processor via a serial connection or a PC
Link interface connection. If you are connected via the PC Link
module, you can have multiple online programs from different
networked racks opened simultaneously.
While a program is running, you can view the power flow of
executing logic, variable state information, and any instruction
runtime error codes generated.
An Overview of Editing and Downloading the Changes
Step 1.
Open the program by using the Monitor PC Program
command from the Editor, Task Manager, or System
Configurator.
Step 2. Make your changes to the online program.
Step 3. Accept the changes.
Step 4. Download the program modifications to the Processor.
About the Changes You Can Make
While editing an online program, you can add new variables with
some limitations and restrictions, but you cannot add or edit variable
or rung descriptions. See About the Limitations for Inserting and
Modifying Rungs in Online Programs" in Appendix D for more
information. When you add global variables, make sure the variables
are nonĆvolatile and do not have retained initialization data. You
must define global variables in the Variable Configurator database. If
you enter a global variable in an online ladder program and that
variable is not in the Variable Configurator database, you get a verify
error when you commit the online changes.
I
MPORTANT
Add global variables to the Variable Configurator database before
making the online changes.
You can also view rung and variable descriptions. When opening an
online program, you can choose whether or not you want to display
rung and variable descriptions. When you open an online program,
the logic is uploaded from the Processor to your computer. If you
choose to display the variable and rung descriptions, these are
extracted from the program's source file, which must be accessible
by located on the computer you are using to edit the online version
of the program. For more information, see Choosing To Display
Descriptions While Editing/Viewing an Online Ladder Program" in
the AutoMax Ladder Editor and Enhanced Ladder Language online
help.