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Protocol Support Matrix

Maintained version: v0.51.2 ｜ Last updated: 2026-07-06

EnerOS natively supports 11 power / IoT / industrial protocols, covering transmission / distribution / consumption / edge IoT scenarios. This page is a protocol matrix quick reference; for adapter development see Development Workflow and the main repo docs/developer-guide.md §5.

11-Protocol Matrix

Protocol	crate	Introduced	Purpose	Link layer	Typical scenario
IEC 61850	eneros-device	v0.25.0	Substation automation / IED	TCP/IP	Within substation / bay level
IEC 60870-5-104	eneros-device / eneros-scada	v0.26.0	Telecontrol telemetry / signaling / control	TCP/IP	Master-slave station
IEC 60870-5-103	eneros-protocol-iec103	v0.35.0	Protection equipment communication	Serial / TCP	Protection device - recorder
CDT cyclic telecontrol	eneros-protocol-cdt	v0.35.0	Legacy telecontrol equipment	Serial	Legacy substations
Modbus	eneros-device	v0.25.0	Industrial general protocol	Serial / TCP	Inverters / storage / peripherals
PMU C37.118	eneros-protocol-pmu	v0.35.0	Synchrophasor measurement	UDP / TCP	Wide-area monitoring WAMS
ICCP / TASE.2	eneros-protocol-iccp	v0.35.0	Inter-control-center data exchange	TCP/IP	Dispatch center interconnection
MQTT	eneros-protocol-mqtt	v0.45.0	IoT message bus	TCP	Distributed energy / storage
CoAP	eneros-protocol-coap	v0.45.0	Constrained device RESTful	UDP	Sensors / edge nodes
LwM2M	eneros-protocol-lwm2m	v0.45.0	IoT device management	UDP	Smart meters / terminal management
DL/T 698.45	eneros-protocol-dlt698	v0.47.0	Chinese power energy data acquisition	TCP	Smart meters / energy acquisition

Link Layer Features

Feature	Description
AF_PACKET	Linux raw socket, used for SV / GOOSE L2 direct transmission, bypassing IP stack to reduce latency
FT 1.2	Serial frame format, used for IEC 103 / CDT
R-GOOSE	GOOSE via Routed VLAN across subnets, used between substations
mTLS	v0.39.0+ all protocol clients support mTLS mutual certificate authentication

Protocol Gateway

eneros-device provides protocol gateway capability, converting between different protocols:

[IEC 104 slave station] ─┐
[Modbus inverter]         ─┼→ ProtocolGateway → [ICCP upstream to dispatch]
[DL/T 698 meter]          ─┘                    → [MQTT upstream to cloud platform]

Protocol Conformance Testing (v0.51.0+)

tests/protocol_conformance/ provides 275 conformance test cases across 7 protocols:

Protocol	Tests	Coverage
IEC 104	60	Frame codec / sequence numbers / timestamps / general interrogation / commands / short floats
IEC 103	35	Frame format / ASDU / fault records / disturbance data
Modbus	40	Function codes / exception codes / register mapping
PMU C37.118	30	Config frames / data frames / command frames / phasor accuracy
DL/T 698	50	Link layer / application layer / data identifiers / security authentication
MQTT	30	Connect / subscribe / publish / QoS / will
CoAP	30	Methods / options / blockwise / resource discovery

Protocol Fuzz (v0.51.0+)

fuzz/ directory provides 4 fuzz targets:

Target	Protocol	Engine
fuzz_iec104	IEC 104	libFuzzer
fuzz_iec103	IEC 103	libFuzzer
fuzz_dlt698	DL/T 698	libFuzzer
fuzz_pmu_c37118	PMU C37.118	libFuzzer

eneros.toml [quality].fuzz_targets configures enabled targets. Windows platform libFuzzer linking issues require Linux / WSL2 environment (see Testing Strategy).

Known Limitations (v0.51.2)

• IEC 104 mock implementation is not production-grade, for demo only
• Fuzz 60s smoke and 24h long runs pending Linux/WSL2 environment validation
• IEC 61850 MMS service set only implements core subset
• DNP3 only supports serial variant; TCP variant pending v0.52.0

Related Documentation

• Power System Primer — IEC protocol family crash course
• Testing Strategy — Fuzz / proptest / protocol conformance
• Main repo docs/developer-guide.md §5 — Adding new protocol adapter
• Main repo crates/eneros-device/ — device adapter source