Section 4.5: Safety Button Control | TON Timer | LD/FBD/SCL | PLC + SCADA Hands-on Guide

This video is a hands-on guide for Section 4.5 of the textbook Control and SCADA Systems by Dr. Chau Truong. In this exercise, we implement and test a Safety Button control system for a large motor. The motor is allowed to start only when the operator presses and holds the safety button long enough for the TON timer to complete. The EStop button is used to stop the motor. This video continues from the same TIA Portal, PLCSIM Advanced, and WinCC Unified project setup used in the previous hands-on videos. Main steps covered: Create PLC tags: Press, EStop, LargeMotor, and Progress Create the Safety Button control logic using LD Configure the TON timer and map elapsed time to the Progress tag Create HMI tags and link them to PLC tags Create the Safety Button HMI screen Configure the Press button, EStop button, Progress display, and LargeMotor indicator Run HMI Runtime and test the LD logic Replace the LD logic with FBD, download, and verify it in the same HMI Runtime Replace the FBD logic with SCL, download, and verify it again in the same HMI Runtime Confirm that Press must be held long enough before LargeMotor turns ON Press EStop and verify that LargeMotor turns OFF Textbook: Control and SCADA Systems Author: Dr. Chau Truong #PLC #SCADA #TIAPortal #PLCSIMAdvanced #WinCCUnified #IndustrialAutomation