PLC Ladder Logic Program Projects

Overview

This repository is a curated collection of PLC ladder logic projects developed using Siemens and Mitsubishi platforms. Each project demonstrates a specific industrial automation workflow, complete with:

• Source code (.mwp files)
• Documentation (exported ladder logic PDFs and screenshots)
• Project-specific README.md files for detailed explanations

The goal of this repository is to showcase practical PLC programming skills, industrial automation concepts, and professional documentation for academic and industry applications.

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Projects Included

• Alternate Motor Running
  Alternates two motors using timers and interlocks to balance usage.
  Platform: Siemens S7-200 (STEP 7 MicroWIN)

• Analog to Digital Input
  Converts analog sensor values into discrete digital outputs based on thresholds.
  Platform: Siemens S7-200 (STEP 7 MicroWIN)

• Bottle Filling Station
  Automates bottle filling with counters, timers, and conveyor sequencing.
  Platform: Siemens S7-200 (STEP 7 MicroWIN)

• Conveyor Control
  Controls conveyor motors, item counting, and timed sequencing with safety logic.
  Platform: Siemens S7-200 (STEP 7 MicroWIN)

• Mixing Plant Control
  Coordinates mixer operation, valve control, and analog outputs for batching systems.
  Platform: Siemens S7-200 (STEP 7 MicroWIN)

• VFD Up/Down Control
  Adjusts motor speed via VFD by incrementing/decrementing analog output values.
  Platform: Siemens S7-200 (STEP 7 MicroWIN)

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Tools & Platforms

• PLC Hardware: Siemens S7-200
• Programming Environments:
  • Siemens STEP 7 MicroWIN V4.0.9.25
  • Siemens S7-200 Explorer V2.0.0.27
• File Types:
  • .mwp → Ladder logic source files
  • .pdf → Exported ladder diagrams
  • .md → Documentation files

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Applications

These projects cover a wide range of industrial automation scenarios:

• Motor control and sequencing
• Analog-to-digital conversion
• Conveyor and material handling
• Bottle filling and packaging
• Mixing and batching processes
• Variable frequency drive (VFD) speed control

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Author

Developed by Yashvi
Focused on industrial automation, PLC programming, and professional documentation.
Part of a portfolio curated for academic and industry audiences.

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