DNP3 Explorer Blog
Articles, guides, and tutorials for DNP3 Explorer.
3 articles
DNP3 vs IEC 60870-5-104: Power Utility Protocols Compared
DNP3 vs IEC 60870-5-104 compared. The two dominant power-utility SCADA protocols. Addressing, transport, event model, region, and which to choose for substations.
Read articleDNP3 Class 0, 1, 2, 3 Explained: Event Polling Strategy
DNP3 Class 0, 1, 2, 3 explained. Class 0 is a full snapshot; Classes 1-3 are prioritized event backlogs. How utility masters poll by class to retrieve only what changed.
Read articleDNP3 Select-Before-Operate (SBO): Safe Control Outputs
DNP3 Select-Before-Operate explained. Why SBO guards critical controls, how the select-then-operate two-step works, select timeouts, and direct operate for non-critical points.
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