Book Image

Industrial Automation from Scratch

By : Olushola Akande
Book Image

Industrial Automation from Scratch

By: Olushola Akande

Overview of this book

Industrial automation has become a popular solution for various industries looking to reduce manual labor inputs and costs by automating processes. This book helps you discover the abilities necessary for excelling in this field. The book starts with the basics of industrial automation before progressing to the application of switches, sensors, actuators, and motors, and a direct on-line (DOL) starter and its components, such as circuit breakers, contactors, and overload relay. Next, you'll explore VFDs, their parameter settings, and how they can be wired and programmed for induction motor control. As you advance, you'll learn the wiring and programming of major industrial automation tools – PLCs, HMIs, and SCADA. You’ll also get to grips with process control and measurements (temperature, pressure, level, and flow), along with analog signal processing with hands-on experience in connecting a 4–20 mA transmitter to a PLC. The concluding chapters will help you grasp various industrial network protocols such as FOUNDATION Fieldbus, Modbus, PROFIBUS, PROFINET, and HART, as well as emerging trends in manufacturing (Industry 4.0) and its empowering technologies (such as IoT, AI, and robotics). By the end of this book, you’ll have gained a practical understanding of industrial automation concepts for machine automation and control.
Table of Contents (21 chapters)
1
Part 1: Learning the Concepts and Skills Required to Get Started
8
Part 2: Understanding PLC, HMI, and SCADA
14
Part 3: Process Control, Industrial Network, and Smart Factory

Using the SET and RESET instructions

The SET and RESET instructions are two important instructions used in ladder diagram programming. They are both output (coil/assignment) instructions.

The SET coil is energized when power is supplied to it via an input (switch, sensor, or push button) and it remains SET (ON) even when the switch, sensor, or push button that supplied power to it is OFF until it is reset.

The RESET coil is de-energized (OFF) when power is supplied to it via an input (switch, sensor, or push button) and it remains OFF even when the switch, sensor, or push button that supplied power to it is OFF until it is SET.

The sample program in the following screenshot shows the SET and RESET instructions in use:

Figure 9.34 – SET and RESET program

Figure 9.34 – SET and RESET program

Note

The set/reset instruction can be added to your rung using the following steps:

On the right-hand side of the programming environment, click Instructions | Bit Logic operation...