Quick Start Owner's manual
Table Of Contents
- 1756-QS001E-EN-P, Logix5000 Controllers Quick Start
- Summary of Changes
- Table of Contents
- 1 - Program and Test a Simple Project
- What You Need
- Before You Begin
- Follow These Steps
- Create a Project for the Controller
- Add Your I/O Modules
- Look at Your I/O Data
- Ladder Logic
- Enter a Function Block Diagram
- Assign Alias Tags for Your Devices
- Establish a Serial Connection to the Controller
- Download a Project to the Controller
- Select the Operating Mode of the Controller
- 2 - Organize a Project
- 3 - Program Add-On Instructions
- What You Need
- Follow These Steps
- Insert an Add-On Instruction
- Copy an Add-On Instruction Definition
- Import an Add-On Instruction Definition
- Access a Parameter That Is Not Visible
- Monitor or Change the Value of a Parameter of an Add-On Instruction
- View the Logic of an Add-On Instruction
- Edit and Monitor an Add-On Instruction
- Update an Add-On Instruction to a Newer Revision
- 4 - Program an Equipment Phase
- 5 - Program a Project Offline
- 6 - Document a Project
- 7 - Go Online to the Controller
- 8 - Program a Project Online
- 9 - Troubleshoot the Controller
- Index
- Back Cover

Publication 1756-QS001E-EN-P - October 2009 55
Program Add-On Instructions Chapter 3
Access a Parameter That Is Not Visible
How you read or write to a parameter of an Add-On Instruction that is not visible depends on the
programming language.
Function Block
1. Click the Properties button for the instruction.
2. Check the Vis box for the parameter and click OK.
3. Wire to the pin for the parameter.
Ladder Logic and Structured Text
Use another instruction, an assignment, or an expression to read or write to the tag name of the parameter.
Use this format for the tag name of the parameter.
Add_On_Tag.Parameter
Where Is
Add_On_Tag Add-on-defined tag for the add-on instruction
Parameter Name of the parameter