Engineering Field Notes

Technical observations from operational deployments. Written for engineers, not for announcements.

OT SecurityMay 2026
OT Asset Inventory Before IEC 62443: Why the Sequence Matters
Most IEC 62443 programmes fail not because of poor security design, but because the asset inventory they are built on is incomplete. A field note on getting the sequence right.
IEC 61850 protocol migration architecture for substation automation systems
Protocol EngineeringMarch 2026
IEC 61850 Migration: What Fails in the Second Year
The initial deployment phase rarely reveals the issues. This field note documents failure patterns observed across twelve substation migrations.
Digital twin synchronization model showing real-time physical-to-virtual mapping
Digital TwinsFebruary 2026
Digital Twins in Industrial Operations: Where the Gap Actually Is
Most digital twin implementations stall at the model-accuracy problem. The operational gap is elsewhere — and it is not a software problem.
Network segmentation diagram for OT cybersecurity zone architecture with conduit isolation
OT SecurityJanuary 2026
IEC 62443 in Practice: Zone Architecture for Operational Networks
Security zone design in industrial environments is not primarily about technology selection — it is about understanding operational boundaries.