Libraries in TIA Portal are containers for reusable code components such as: They allow you to standardize, share, and reuse these components across different projects or among engineering teams. There are two types of libraries in TIA Portal: Location in TIA Portal: Project View → Libraries → Project Library Location in TIA Portal: Project View…

Introduction As automation projects scale in size and complexity, the need for consistency, maintainability, and reusability becomes increasingly important. In this chapter, we introduce the concept of libraries in TIA Portal and explain how they can be used to organize, reuse, and share code components across multiple projects or within a team. Libraries allow engineers…

To make the function block more reusable and resilient to changes in the size of the button array, the fixed indexing (1 TO 10) can be replaced with dynamic bounds using the built-in LOWER_BOUND and UPPER_BOUND functions. Instead of hardcoding the array size in the FB interface like this: buttons : IN_OUT ARRAY[1..10] OF button…

As PLC projects grow in complexity, organizing data becomes critical for both readability and maintainability. Using individual variables quickly becomes inefficient and error-prone, especially when dealing with repeated structures such as sensor arrays, motor configurations, or control parameters. This is where User-Defined Data Types (UDTs) come into play. UDTs allow engineers to define their own…

Introduction When working with Siemens automation projects in the TIA Portal, it’s not always necessary to have a physical PLC on hand. Thanks to S7-PLCSIM, Siemens’ virtual PLC simulator, you can fully test your logic, monitor tags, and validate system behavior before deploying to actual hardware. This guide walks you through the steps to simulate…

In automation, it’s often necessary to detect when a signal changes state, rather than its continuous value. For example: For this purpose, TIA Portal provides standard function blocks: R_TRIG – Rising Edge Detection Function: Triggers TRUE for one scan cycle when the input transitionsfrom FALSE to TRUE. Use Case: You want to increment a counter…

Welcome to the final chapter of our TIA Portal Tutorial series, where we dive into advanced concepts and practical techniques to elevate your PLC programming skills. In this section, we will explore powerful features such as User-Defined Data Types (UDTs), reusable Function Blocks, and efficient code organization through Libraries. You’ll also learn how to leverage…

Timer Functions – TON, TOF, and TP In this chapter, we will explore the three basic timer types used in TIA Portal programming: TON (On-Delay Timer), TOF (Off-Delay Timer), and TP (Pulse Timer). We will provide practical examples demonstrating their typical applications. TON – On-Delay Timer Function Delays the activation of an output by a…

Objective Call the FC_DeviceStatusfunction for 15 devices in a loop, using arrays stored in a data block to hold the inputs and outputs Data Block: DB_DeviceStatusData Prepare the Structure for 15 devices Logic in OB1 (SCL): Use FOR Loop to check 15 devices Explanation: Benefits: If you found this helpful, please consider supporting with a…