A low-disruption connectivity pilot for legacy machines
Prove the smallest useful read-only data path before changing a production network or replacing equipment.
Connectivity & protocols / EN
ENGINEERING NOTESTechnical answers.
Technical answers.
For real factory questions.
From the production line to business systems: implementation steps, design decisions and commissioning checks.
23 articles · Connectivity & protocols
Connectivity & protocols / EN
Validate a Modbus register map before commissioning
A practical sequence for checking offsets, signedness, byte order and scaling before register values reach a dashboard.
Connectivity & protocols / EN
Test MQTT recovery before the first network outage
A factory data test plan for disconnects, stale values, duplicate messages and replay behavior.
OT security / EN
A PLC backup is not complete until recovery is tested
Plan a restore drill that checks project files, licenses, hardware dependencies and operational acceptance.
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.
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.
Connectivity & protocols / EN
IIoT Connectivity Options: Cellular, Wi-Fi, LoRaWAN, and Wired
There is no best wireless technology - only the right one for the distance, data rate, and power budget. A selection guide.
ethernet / EN
Ethernet vs Fieldbus: When Industrial Ethernet Wins and When It Doesn't
Fieldbus is not obsolete, and Ethernet is not automatically better. The engineering criteria that settle the debate.
plc / EN
PLC Program Backup Best Practices: Protecting the Code That Runs Your Plant
The only copy of a machine's logic should never live on a single laptop. A practical backup strategy for PLC programs of any age.
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