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RRobusteledge-gateway.hashnode.dev1d ago · 6 min read

Modbus to MQTT at the Edge: Turning PLC Data into Cloud-Ready Industrial IoT Data

Why Modbus-to-MQTT matters in brownfield factories Many factories already have valuable data on the shop floor. It may come from PLCs, meters, sensors, drives, machine controllers, or older equipment

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CCyberwizardwizard-school.hashnode.devJan 21 · 5 min read

Asset Context and Alert Severity in ICS/OT: Why the Same Activity Can Mean Very Different Things

(Follow-up to: “Observing Baseline vs Anomalous Modbus Traffic – A Beginner’s ICS/OT Security Lab”) Introduction In my previous lab, I focused on a foundational skill in ICS/OT security operations: establishing a baseline and identifying anomalous pr...

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CCyberwizardwizard-school.hashnode.devJan 7 · 7 min read

Observing Baseline vs Anomalous Modbus Traffic: A Beginner’s ICS/OT Security Lab

Introduction In support of my recent research into ICS/OT Security Operations, I wanted to set up a small, controlled environment where I could observe normal industrial network behavior identify meaningful deviations reason about that activity us...

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ZOZeroTrust Opsnavyacyber.hashnode.devJan 1 · 3 min read

Day 19: ICS/Modbus – Claus for Concern

The Mission: Restoring the Drone Delivery "Brain" Industrial Control Systems (ICS). At the Best Festival Company (TBFC) headquarters, chaos erupted because drones were delivering chocolate eggs instead of toys. After finding a mysterious crumpled not...

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KNKrishna Nartamkrishna-nartam.hashnode.devDec 9, 2025 · 3 min read

Engineering the CNC Operational Command Center: A Unified Interface Layer Built on Correlated, Predictive, and Real-Time Data Streams

This technical post focuses on the experience layer of the CNC intelligence stack. After establishing correlation logic (Blog 15), predictive signals (Blog 17), and the performance intelligence layer (Blog 16), Blog 19 introduces the interface archit...

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KNKrishna Nartamkrishna-nartam.hashnode.devDec 6, 2025 · 3 min read

Architecting the CNC Performance Intelligence Layer: From Time-Series Aggregation to Actionable Decision Logic

Blog 16 continues the engineering progression of my CNC data stack.After building the event correlation mechanism in Blog 15, this post focuses on the next abstraction layer: Performance Intelligence. While pipelines deliver events, and correlation p...

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KNKrishna Nartamkrishna-nartam.hashnode.devDec 5, 2025 · 3 min read

Engineering the Predictive Maintenance Engine for CNC Systems — Turning Telemetry Into Foresight

1. Introduction — Moving From Diagnostics to Prognostics ⚙️📡 After building the cycle analytics layer (Blog 12), the shift engine (Blog 13), and the event correlation engine (Blog 14), the CNC system had reached real-time operational intelligence. B...

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KNKrishna Nartamkrishna-nartam.hashnode.devDec 1, 2025 · 2 min read

Building the CNC Data Validation Layer (Node-RED + n8n + Express.js)

In CNC monitoring, raw machine signals are unreliable. Spikes, unstable transitions, timestamp errors, and missing fields can break your analytics — especially OEE. So in Blog #11, I explain how I built a full CNC Data Validation Layer that cleans an...

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KNKrishna Nartamkrishna-nartam.hashnode.devNov 27, 2025 · 2 min read

Blog 7 — Designing the Data Intelligence Layer: Turning PLC Signals Into Meaningful CNC Analytics

One of the biggest insights I’ve gained while developing my CNC Data Monitoring & OEE Tracking System is that real-time automation isn’t just about reading machine data — it’s about understanding it. Hashnode readers know this well:Data without intel...

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KNKrishna Nartamkrishna-nartam.hashnode.devNov 26, 2025 · 5 min read

Designing the Real-Time Data Flow Architecture for My CNC Monitoring System

How I mapped the full signal pathway—from CNC → PLC → Modbus → Node-RED → n8n → Express.js → MongoDB → Web App Introduction Until this stage of the project, most of my effort was spent learning individual tools: PLC basics, Modbus registers, Node-RE...

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#modbus

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Trending tags this week

Modbus to MQTT at the Edge: Turning PLC Data into Cloud-Ready Industrial IoT Data

Asset Context and Alert Severity in ICS/OT: Why the Same Activity Can Mean Very Different Things

Observing Baseline vs Anomalous Modbus Traffic: A Beginner’s ICS/OT Security Lab

Day 19: ICS/Modbus – Claus for Concern

Engineering the CNC Operational Command Center: A Unified Interface Layer Built on Correlated, Predictive, and Real-Time Data Streams

Architecting the CNC Performance Intelligence Layer: From Time-Series Aggregation to Actionable Decision Logic

Engineering the Predictive Maintenance Engine for CNC Systems — Turning Telemetry Into Foresight

Building the CNC Data Validation Layer (Node-RED + n8n + Express.js)

Blog 7 — Designing the Data Intelligence Layer: Turning PLC Signals Into Meaningful CNC Analytics

Designing the Real-Time Data Flow Architecture for My CNC Monitoring System