Firmware Update Management for Industrial Devices: Policy Over Panic
Unpatched devices are a risk; botched updates are a production outage. A process for firmware that balances both.
firmware / EN
ENGINEERING NOTESTechnical answers.
Technical answers.
For real factory questions.
From the production line to business systems: implementation steps, design decisions and commissioning checks.
62 articles
ransomware / EN
Ransomware and OT: Why Traditional Endpoint Protection Is Not Enough
The playbook that protects office PCs does not transfer to controllers. What ransomware actually does to OT and where the defenses belong.
logging / EN
Logging and Audit Trails for OT Systems: What to Collect and Where to Keep It
OT logging is hard because devices log poorly and clocks drift. A practical baseline that satisfies both engineers and auditors.
scada / EN
SCADA Redundancy and Failover: Designing for Availability, Not Magic
Redundant SCADA systems fail in interesting ways. What the standard topologies are and how to test the one you buy.
mqtt / EN
MQTT QoS Levels Explained for Industrial Messaging
QoS 0, 1, and 2 are often misread as reliability tiers. What they actually guarantee - and how to choose per message class.
networking / EN
Managed vs Unmanaged Industrial Ethernet Switches: Choose by Risk, Not Price
Unmanaged switches are cheaper; managed switches are controllable. When the difference matters - and when it doesn't.
opc-ua / EN
OPC UA Companion Specifications: What They Are and When They Help
Generic OPC UA models get you interoperability; companion specs get you semantics. A field guide to the standard ecosystem.
wireless / EN
Wireless Sensor Networks in Harsh Industrial Environments
Heat, metal, vibration, and interference make factory wireless hard. How to design wireless sensor networks that survive real plants.
mes / EN
MES vs ERP vs SCADA: Understanding the Manufacturing Software Stack
The three-letter acronyms blur together, but each layer answers a different question. A clear map of where data originates and flows.
plc / EN
Cybersecurity Hardening for PLCs: Steps That Work Without Breaking Production
Hardening a controller is different from hardening a server. Practical, low-risk measures for PLCs and their networks.
historians / EN
Historian vs Data Lake: Where Should Industrial Data Actually Live?
Historians are optimized for fast time-series; data lakes for flexible analytics. The two are complementary - if you design the boundary.
data-quality / EN
Data Quality in Manufacturing: Why Garbage Time-Series Breaks Analytics
The analytics model is only as good as the data pipeline that feeds it. The most common data quality failures and how to catch them early.
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