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What is a "Sequential Flow Chart"?
What is a "Sequential Flow Chart"?
A Sequential Flow Chart (SFC) is a type of flowchart that shows the sequence of steps or actions that need to be taken to complete a process or task. It is a visual representation of the steps involved in a process, and it is used to understand how a process works and to identify potential problems or areas for improvement.
Sequential Flow Charts are excellent tools for Operators to use when understanding how Systems work
A sequential flow chart typically consists of a series of boxes or shapes connected by arrows, each box representing a step in the process. The arrows indicate the flow of the process, and they show the order in which the steps are performed. The flow chart typically starts with a start box and ends with an end box.
Sequential flow charts are important because they can help to:
Understand the process: By visualizing the process in a flowchart, it becomes easier to understand the steps involved, how they relate to one another and where the process begins and ends.
Identify problems: By reviewing a flowchart, it is possible to identify potential problems or areas for improvement in the process.
Improve efficiency: By identifying and removing unnecessary steps or bottlenecks in the process, the overall efficiency of the process can be improved.
Provide a clear communication: A flowchart provides a clear and easy-to-understand representation of a process, making it an effective tool for communication and training.
Facilitate automation: A flowchart can be used to design and implement automated systems, such as computer programs or robotic systems, by specifying the steps of the process in a logical and sequential manner.
Overall, a sequential flow chart is an important tool for understanding, analyzing, and improving processes in various fields including manufacturing, business, healthcare, software development and many others.
What is a "Sequential Function Chart"?
What is a "Sequential Function Chart"?
A Sequential Function Chart (also SFC) is a type of flowchart used to describe the sequence of functions or actions in a control system.
It is a graphical representation of the process logic and control functions of a system.
It is used to design and document control systems in industrial automation, and it is an international standard (IEC 61131-3) for PLCs.
Sequential Flow Charts are excellent tools for Technicians to use when modifying how Systems work
A SFC typically consists of a series of steps or actions represented by individual blocks, each block representing a specific function or a set of related functions.
The blocks are connected by transition arrows that indicate the flow of control between the functions. The SFC starts with an initial step, and ends with a final step.
SFC is important because it provides a clear representation of the process logic and control functions of a system, making it easy to understand, analyze and improve.
It also facilitates the design and implementation of automation systems by specifying the steps of the process in a logical and sequential manner.
An SFC differs from sequential flow chart in the following ways:
A flowchart is used to describe a process in general, while an SFC is specific to control systems and automation.
A flowchart can be used for a wide range of processes, while an SFC is specific to industrial automation systems.
A flowchart is a more general tool, and SFC is more specialized and technical.
A flowchart can be used to describe a process in a variety of ways, while an SFC has a specific and standardized format.
In summary, while both SFC and sequential flow charts are used to represent processes in a logical and sequential manner, SFC is specifically designed for industrial automation systems and it follows a standardized format.
Making an SFC
Making an SFC
When making a Sequential Flow Chart, there are some general rules of thumb to follow to make the job easy:
Start with the end in mind: Begin by identifying the end goal of the process, and then work backwards to identify the steps that need to be taken to reach that goal.
Keep it simple: Use simple and clear symbols and flow lines to represent the process. Avoid using too many shapes or lines, as this can make the flowchart difficult to understand.
Use consistent formatting: Use the same symbols and formatting throughout the flowchart to make it easy to read and understand.
Use swim lanes: Use swim lanes to separate different parts of the process and to show who is responsible for each step.
Keep it flow: Use arrows to indicate the flow of the process and make sure that the flow of the chart makes logical sense.
Use annotations: Use annotations to add additional information or explanations to the chart, such as notes or definitions of symbols used.
Review and test: Review the flowchart with stakeholders and test it with a small group of users to identify any issues or areas for improvement.
Keep it up-to-date: Update the flowchart as the process changes to ensure that it remains accurate and relevant.
Use software: There are many software programs available that can help to create flowcharts, such as Microsoft Visio, Lucidchart, and SmartDraw, which can help to make the process of creating flowcharts more efficient and effective.
Think visually: Don't be afraid to think creatively and use different visual elements, such as color coding or images, to make the flowchart more engaging and easier to understand.
3.2✔ CHECKPOINT
3.2✔ CHECKPOINT
SFC - Dispenser System
SFC - Dispenser System
For the Dispenser System pictured here & physically available in the IMO Lab (Room 114 in Building 24):
Record yourself operating the system in both Auto & Manual mode
Create a SFC of the steps of the "Dispenser" System in normal operation:
Note: Look to the example SFC of the "Pick 'N Place" System (pictured below & physically next to the Dispenser System)
Once done, upload documentation of your progress (text/pictures/gifs/videos) to your previously-created "Systems Approach Tools" project page on your portfolio website, including:
Your SFC, compared side-by-side to the system throughout a complete operating cycle
Descriptions/summaries of what you did/learned
"Pick 'N Place" System (Example Only, DO NOT Analyze)
Sample SFC of "Pick 'N Place" System (Example Only)
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