Rockwell Automation Publication 1769-UM021G-EN-P - October 2015
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Develop Applications
Chapter 10
Add-On Instructions
You can design and configure sets of commonly used instructions to increase
project consistency. Similar to the built-in instructions contained in Logix5000
controllers, these instructions you create are called Add-On Instructions.
Add-On Instructions reuse common control algorithms. With them, you can do
the following:
•
Ease maintenance by animating logic for one instance.
•
Protect intellectual property with Source Protection.
•
Reduce documentation development time.
You can use Add-On Instructions across multiple projects. You can define your
instructions, obtain them from somebody else, or copy them from another
project.
This table explains some of the capabilities and advantages of use Add-On
Instructions.
Table 35 - Add-On Instruction Capabilities
Capability
Description
Save Time
With Add-On Instructions, you can combine your most commonly used logic into sets of reusable instructions. You save time when you
create instructions for your projects and share them with others. Add-On Instructions increase project consistency because commonly
used algorithms all work in the same manner, regardless of who implements the project.
Use Standard Editors
You create Add-On Instructions by using one of three editors:
•
Relay Ladder
•
Function Block Diagram
•
Structured Text
Once you have created instructions, you can use them in any editor.
Export Add-On Instructions
You can export Add-On Instructions to other projects and copy and paste them from one project to another. Give each instruction a
unique name so that you don’t accidentally overwrite another instruction of the same name.
Use Context Views
Context views let you visualize the logic of an instruction for an instant, which simplifies online troubleshooting of your Add-On
Instructions. Each instruction contains a revision, a change history, and an auto-generated help page.
Create Custom Help
When you create an instruction, you enter information for the description fields in dialogs, information that becomes what is known as
Custom Help. Custom Help makes it easier for you to get the help you need when implementing the instructions.
Apply Source Protection
As the creator of Add-On Instructions, you can limit users of your instructions to read-only access, or you can bar access to the internal
logic or local parameters that are used by the instructions. This source protection lets you stop unwanted changes to your instructions
and protects your intellectual property.
