SFC Instructions
The Sequential Function Chart (SFC) is a flowchart of your process. It defines the steps or states through which your system progresses.
Available Instructions
SFC instructions are available in these editors.
Ladder Diagram |
Not Available |
Function Block |
Not available |
Structured Text |
Not Available |
Sequential Function Chart |
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By using an SFC to specify your process, you gain these advantages:
- An SFC provides a graphical representation of your process. This makes it easier to organize and read. In addition, theLogix Designerapplication lets you:
- add notes that clarify steps or capture important information
- print the SFC
- BecauseLogix 5000controllers support SFCs, you do not have to enter the specification a second time. You are programming your system as you specify it.
The SFC instructions are:
If you want to: | Use this instruction: |
represent a language construct consisting of a step wired to a transition. | |
represent a major function of your process. It contains the events that occur during a particular time, phase, or station. | |
represent a true or false condition that tells the controller when to go to the next step | |
represent a functional division of a step | |
represent an action that contains no logic for the action | |
represent two or more alternate paths of execution depending on which transition condition is true. | |
represent two or more alternate paths of execution executed in parallel. | |
wire the selected elements together to create a branch convergence | |
create a new branch or extend the selected branch. | |
pauses the execution of the SFC | |
Start electronic camming as a function of time. | |
Use to add descriptions or comments to SFC elements. |
A sequential function chart (SFC) is a flowchart that controls your machine or process. An SFC uses steps and transitions to perform specific operations or actions. The following examples show the elements of an SFC.
Example 1
Example 2
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