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Five design decisions when moving PLC data into SQL
Writing PLC data to SQL is easy; writing it so it keeps working correctly for years takes design. Five decisions on trigger, table structure, time, quality and error behaviour.
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Recipe transfer from ERP to production: controlled writes
Writing a recipe affects product quality and safety. How to design a controlled transfer with a single…
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MQTT and Sparkplug: choosing the data model
MQTT provides the transport; the meaning of each message still needs design. Consider topics, state and…
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Brownfield data collection: start with a focused scope
Planning data access around an operating plant starts with inventory, device load and controlled changes.
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Aligning energy data with production
A meter reading is not an efficiency metric by itself. Align time, production scope and missing-data…
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Preparing OEE data: from counters to downtime reasons
OEE is the product of availability, performance and quality, but getting it right depends on state…
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Redundancy, buffering and recovery are different
Redundancy keeps the service running, buffering prevents data loss during an outage, and recovery brings you…
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Choosing the Right Data Collection Path: Drivers, OPC UA and MQTT
Three paths for the same data: direct drivers, OPC UA and MQTT. The right choice depends on device diversity…
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OPC UA Security Policies and Certificates: A Practical Guide
OPC UA security has two layers: message security (SecurityPolicy + certificates) and user authentication…
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