Rosario Cirrito Books

This booklet is the first in a series focused on automation recipes using PLC (Programmable Logic Controller) and HMI (Human Machine Interface). It targets readers with basic PLC programming knowledge who wish to explore advanced, real-world solutions. In modern programming, developers often utilize "Design Patterns," which are standard solutions for common problems, enhancing efficiency and reliability. This series substitutes "design pattern" with "automation recipe" for easier comprehension by non-IT readers. The book details a reusable automation recipe applicable to any PLC-HMI project involving electric motors, optimized for Scada supervision systems. It begins with an introduction to electric motors, covering their physical structure and types of voltage control, including star-delta switching. The second section focuses on developing combined software for PLC and HMI, analyzing the main functional block (UDFB), ElectricMotor, and HMI monitoring and control screens. An auxiliary function block, Mot2Seq, is introduced to demonstrate practical usage in twin-pump automation. The HMI solutions are tested on the Horner Apg's OCS, which integrates a Controller, Operator Interface, Network, and I/O. Although the author has experience with various PLCs, the series emphasizes Horner OCS due to its user-friendly, free Cscape development environment. All logics are developed using the IEC61131-3 compliant Ladder language, makin

This booklet is the second in a series focused on automation recipes using PLC (Programmable Logic Controller) and HMI (Human Machine Interface). It targets readers with basic PLC programming knowledge who seek advanced, real-world solutions. In modern programming, developers utilize "Design Patterns" to address recurring problems effectively. This series replaces the term "design pattern" with "automation recipe" for clarity. The chapters detail a reusable automation recipe applicable to any PLC-HMI project involving electric motors, optimized for SCADA systems. This volume specifically covers measuring and monitoring quantities from 4-20 mA current sensors. The first section examines measurement types for physical quantities like pressure, level, flow, electric current, and temperature. The second section focuses on developing combined software for PLC and HMI, analyzing two function blocks: Conv4_20mA, which converts analog signals to engineering units, and AnalogSts, which monitors the analog signal's status based on parameters like set-point and alarms. Relevant display screens for value monitoring and parameter adjustments are also detailed, along with auxiliary subroutines, VirtualAI and Init. The final section applies these concepts to a practical level control case in a wastewater pumping station, utilizing the Horner OCS, which integrates multiple functions into a single product. The author, experienced with vario

This volume offers a comprehensive collection of automation recipes for technological systems, featuring 16 functional blocks, 8 subroutines, and corresponding graphic pages tailored for monitoring and control within a PLC-HMI-SCADA environment. The PLC code, written in the standard ladder 61131-3 language, ensures portability across different PLC manufacturers. Each control logic is paired with HMI graphic pages for dynamic value display and manual command input. The book is divided into four sections. The first focuses on automation for equipment and sensors, including functional blocks like ElectricMotor for managing electric motor commands and statuses, and sequencers for machinery operation. It also features subroutines for decoupling input/output addresses from internal registers. The second section presents general-purpose recipes, including subroutines for initializing values, grouping SCADA commands, and managing alarm flags, alongside function blocks for generating pulse trains, verifying compliance with thresholds, and real-time linear interpolation. The third section utilizes the PLC’s internal clock for date and time management, with subroutines and function blocks designed for scheduling and managing loads based on time and day. The final section addresses user authentication and authorization, detailing access management for navigation within the operator panel. The book concludes with practical examples of

This booklet is the third in a series focused on automation recipes using PLC (Programmable Logic Controller) and HMI (Human Machine Interface). It targets readers with basic PLC programming knowledge who wish to explore advanced, real-world solutions. In modern programming, developers often utilize "Design Patterns," which are standard solutions for common problems. These patterns describe a recurring issue and offer effective, reusable solutions. In this series, "automation recipe" replaces "design pattern" for better understanding by non-IT readers. This volume details an automation recipe applicable to any PLC-HMI project involving machine sequencers, optimized for Scada supervision systems. The first book covers electric motor automation, while the second focuses on measurement with 4-20 mA sensors. This third installment addresses sequencers for operating machinery like pumps or compressors in twin or parallel configurations. It processes signals from an analogue monitoring block to command multiple electric motors, completing the regulation chain from analogue to digital control. The first section analyzes twin configurations for machine operation, while the second discusses combined software development for PLC and HMI. It illustrates the logic of two functional blocks, Mot2Seq and Mot6Seq, along with display screens for monitoring and configuration. The final section applies these concepts to a real-level control