Automation Recipes - 3: PLC Logics and HMI Screens for Machine Sequencers Automation

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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