Function Blocks (FB) Explained | Timers, Set & Reset in a PLC Program

Описание: To continue on our chapter 7 of the PLC training series...
In this session, we take a deeper look at Function Blocks (FBs) in Siemens TIA Portal and clearly explain the difference between a Function (FC) and a Function Block (FB) - one of the most important concepts for writing scalable and memory based PLC programs.

Using a practical apartment automation example, we design a program that controls:
• Automatic door opening and closing
• Lighting operation inside the apartment
• Timed behavior using PLC timers
• Set and Reset (SR/RS) logic for stable state control

This lesson connects theory to real world automation by showing how FBs retain data and why they are essential for applications involving timers, states, and repeated logic.

Key Topics Covered:
• Function Block (FB) vs Function (FC):
Understanding memory retention, instance data blocks, and when to use each.
• Creating and Calling an FB:
How FBs are instantiated and executed in OB1.
• Timers in PLC Programming:
Introducing timers to control delays and sequence behavior.
• Set & Reset Logic:
Using SR/RS instructions for reliable state based control.
• Practical Automation Example:
Door and lighting control logic modeled on a real world scenario.

Ideal For:
• PLC programmers moving from basic logic to structured programs
• Engineers learning state based control using FBs
• Automation students using Siemens TIA Portal
• S7 1200 / S7 1500 users working with timers and memory logic

Prior Video:👉    • Introduction to SCL Programming | Converti...  

GitHub Repository:👉 https://github.com/Oluwasedago/PLC-Tr...

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