▶ C'mon over to https://realpars.com/ where you can learn PLC programming faster and easier than you ever thought possible! ▶ You can read the full post here https://realpars.com/sequential-function-chart ⌚Timestamps: 00:00 - Intro 00:51 - What is a sequence in SFC? 01:36 - Init step 02:02 - Step or State 02:08 - Transition 03:20 - Action and Qualifiers 04:14 - SFC example ============================= In this video, we’ll introduce you to a PLC programming language called Sequential Function Chart, or SFC for short. We will also look at an SFC example. The PLC programming standard IEC 61131-3 includes five programming languages: – Ladder Diagram – Function Block Diagram – Instruction List – Structured Text – Sequential Function Chart The SFC programming language is different compared to the four other languages. The SFC is used to program a sequence directly in the PLC. An SFC program is composed of graphic symbols. Each graphic symbol represents one step. A step is the same as a state. - Init step: The first graphic symbol is used for initialization. This is named the init step. This is a square that is double-lined. Inside the square is a step name. When the PLC turns on the program will go into the initialization step and stay there. - Step or State: A Step is a single-lined square. - Transition: Each step is connected to the next step by a connection line. And a small horizontal line is added and this is called the transition. At the transition line, there must be a condition. - Action: An action can be added to a step if required. A line connects the Step to the Action. - Qualifiers: Inside the action box is a qualifier: – An N qualifier means that the variable is TRUE only when the step is active. Therefore you don’t need to set the variable to FALSE when leaving the Step action. – When using S as a qualifier, a TRUE will be stored for the variable inside the memory. This is used to keep the variable TRUE when leaving the step. – If you need to reset the stored variable value, you can use R as a qualifier. ============================= Get a RealPars pro membership: https://learn.realpars.com/bundles/pro ============================= Missed our most recent videos? Watch them here: https://realpars.com/laser-sensor https://realpars.com/u-remote https://realpars.com/datasheet ============================= To stay up to date with our last videos, make sure to subscribe to this YouTube channel: http://bit.ly/realpars ============================= TWEET THIS VIDEO: https://ctt.ac/h2ZKQ ============================= Follow us on Facebook 👉 https://www.facebook.com/therealpars Follow us on Twitter 👉 https://twitter.com/realpars Follow us on LinkedIn 👉 https://www.linkedin.com/company/realpars Follow us on Instagram 👉 https://www.instagram.com/realparsdotcom #RealPars #PLC #PLCprogramming