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Current news on industrial automation, OPC technologies and the industry.
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Industrial protocols and driver selection: Modbus, S7, EtherNet/IP and others
Choosing the right protocol and driver to get data from a device determines everything from which port to open to which prerequisites are needed. A practical comparison and…
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What is a Unified Namespace (UNS)? From point-to-point integration to one namespace
A UNS is an architectural rule in which all systems publish current state in one hierarchical namespace. What…
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OPC UA or MQTT? Which one, and when?
OPC UA and MQTT are not rivals but tools for different layers. The differences between client–server and…
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Designing data flows with OPC Router: triggers, transformation and error handling
A good data flow has one purpose, one trigger and a defined error behaviour. How to split, transform, test…
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OPC UA data quality and timestamps: a value alone is not enough
A data point consists of a value, a source timestamp, a server timestamp and a quality code. Reports that do…
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The channel–device–tag model in Kepware Server: how to build a sound configuration
A Kepware Server project is made of channels, devices, tag groups and tags. A practical guide to naming…
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IT/OT integration: from first conversation to pilot
A device inventory, data dictionary and acceptance criteria turn product selection into a concrete…
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OPC UA certificates: from installation to renewal
Most OPC UA connections fail to establish, or suddenly drop one day, because of certificates. A lifecycle…
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Integration acceptance tests: after the connection works
A successful connection is not the end of a project. Test data correctness, outage behavior and operational…
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