Online Tool
IEC 103 Protocol Decoder
Parse IEC 60870-5-103 protection equipment frames: ASDU 1–10, generic services, disturbance data, and type-specific events.
Raw HEX Frame Input
Cleaned chars: 0
Bytes: 0
Live decoding enabled
No hex pasted yet. Try Sample to see the decoder in action.
About this tool
Decode raw hex captures (Wireshark, serial sniffer, SCADA gateway logs) field by field — no sign-up, no uploads, everything runs in your browser. Supported input formats:
- Spaces, commas, colons, newlines,
0xprefixes, mixed case hex. - Single frame or concatenated frames; the first complete frame is decoded.
- Click Sample for a realistic frame typical of this protocol.
- All parsing is local (no network calls, no telemetry).