Tuya Zigbee CT Clamp — Data Point (DP) Mappings

Reference list of observed Tuya DPID mappings for a CT clamp energy sensor using Zigbee cluster 0xEF00. Use to avoid mis-mapping in drivers, gateways, and integrators.

Note: Vendor/model specific. Validate against your device logs.

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Confirmed DP Mappings

• 0x70 — Voltage

  • Scale: ×0.1 V
  • Example: 2353 → 235.3 V

• 0x6E — Active power (P)

  • Scale: ×1 W
  • Example: 99 → 99 W

• 0x71 — Apparent power (S)

  • Scale: ×0.01 VA
  • Example: 11823 → 118.23 VA
  • Sanity: S ≈ V × I, so I_est ≈ S/V using V from 0x70

• 0x6F — Frequency

  • Scale: ×0.01 Hz
  • Example: 4931 → 49.31 Hz
  • Note: Previously misinterpreted as current

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Likely/Observed (TBD) DP Mappings

• 0x65 — Energy counter (units TBD)

  • Hypothesis: Wh or 0.01 kWh
  • Method: Compare Δenergy/Δt versus average P over time
  • Example raw values ~27000 (could be ~27.0 kWh if Wh; ~270.0 kWh if 0.01 kWh)

• 0x73 — Energy counter (units TBD)

  • Hypothesis: total or mirror of 0x65
  • Check: delta/hour behavior, reset at midnight, or persistent total

• 0x66 — Enum state/mode

  • Observed: 0
  • Likely: device mode/relay/operational state (no effect seen yet)

• 0x6A — Temperature (probable)

  • Observed: 23, 28 (plausible °C)

• 0x72, 0x69 — Flags/thresholds (unclear)

  • Often 0; may represent alarms or thresholds (not active)

• 0x79 — Unknown percentage-like metric

  • Often 100; may be device-specific indicator

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Derived Values (in firmware/integration)

• Estimated current I_est (A) ≈ S/V using 0x71 and 0x70
• Power factor PF ≈ P/S using 0x6E and 0x71

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Notes

• Device-specific: These mappings are from observed logs for a particular Tuya CT clamp.
• Current logging: Firmware logs 0x70 (V), 0x6E (P), 0x71 (S), 0x6F (Hz); 0x65/0x73 raw; derived I≈S/V and PF≈P/S.

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Verification Guidance

• Energy unit confirmation (0x65/0x73):
  • Record P (W) and energy over a known interval.
  • Compute expected Δenergy ≈ average(P) × Δt_hours.
  • Match against raw delta to infer scale (Wh vs 0.01 kWh).
• Daily reset detection:
  • Track midnight behavior. If counter resets, likely “today” energy; if not, total accumulator.

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Mapping Table (experimental)

DPID	Name	Type	Scale	Unit	Status	Notes
0x70	voltage	value	0.1	V	confirmed
0x6E	active_power	value	1	W	confirmed
0x71	apparent_power	value	0.01	VA	confirmed	I_est ≈ S/V
0x6F	frequency	value	0.01	Hz	confirmed
0x65	energy_counter	value	TBD	Wh or 0.01 kWh	likely	confirm via Δenergy/Δt vs avg P
0x73	energy_counter_alt	value	TBD	Wh or 0.01 kWh	likely	total or mirror of 0x65
0x66	mode_state	enum	—	—	likely	operational state
0x6A	temperature	value	1	°C	probable
0x72	flags_thresholds	bitmap_or_enum	—	—	unclear	often 0
0x69	flags_thresholds_2	bitmap_or_enum	—	—	unclear	often 0
0x79	percent_like_metric	value	—	—	unclear	often 100

Derived:

• current_A ≈ apparent_power_VA / voltage_V
• power_factor ≈ active_power_W / apparent_power_VA

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Contributing

• Share logs: Raw DPID, payloads, scales, and real-world meter references.
• Propose fixes: Open PRs to adjust scales, units, or add new DPIDs.
• Verification checklist: Include Δenergy/Δt vs average P, and reset behaviors.

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License

MIT