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 87
Program a Project Offline Chapter 5
Enter a Sequential Function Chart
A sequential function chart (SFC) lets you define a sequence of states (steps) through which your machine or
process progresses. The steps can execute structured text, call subroutines, or simply serve as signals for
other logic.
Item Description
A Step is major function of your process. It contains the actions that occur at a particular time,
phase, or station.
B Action is one of the functions that a step performs. To program the action, either enter
structured text or call a subroutine.
C Transition is a true or false condition that tells the SFC when to go to the next step. To
specify the condition, either enter a BOOL expression in structured text or call a subroutine.
D Branch executes more than 1 step at the same time (simultaneous) or choose between
different steps (selective).
E Wire connects one element to another anywhere on the chart.
A
D
E
C
B