DNP3 Application Layer Control Code Verifier
Validates DNP3 control relay output block (CROB) function codes.
Notice: engineering verification utility. Use test or de-identified data and verify results independently before relying on them.
How it works
Standard: IEEE 1815 DNP3 Protocol
Formula: Control code function bits evaluation (NUL, PULSE_ON, PULSE_OFF, LATCH_ON, LATCH_OFF)
Checks: Valid DNP3 function code; valid trip/close selector pattern
Calculated locally in browser memory; nothing leaves your browser.
Deterministic local-first client-side execution. Provided as-is without warranty.