I see no data on the dashboard after connecting the LE-03MW. What should I check?

Verify the RS-485 wiring polarity (A to A, B to B) and confirm the baud rate is set to 19200 with odd parity on both the meter and the gateway. Also ensure the Modbus slave address in the template matches the address configured on the meter.

Some reactive energy values look incorrect or show zero. Why?

The LE-03MW uses uint16 format for certain reactive energy registers (capacitive and inductive totals) and per-phase reactive power, while most other registers use float32. The template handles this, but if you have customized register mappings, double-check the data type for each register.

Can I connect multiple LE-03MW meters on the same RS-485 bus?

Yes. Assign a unique Modbus slave address to each meter using the front panel menu. Then add each meter as a separate device in the ModbusCloud portal, selecting the same LE-03MW template but entering the corresponding slave address.

Does the template support reading tariff-specific energy values?

The template reads total consumed and exported active energy as well as per-tariff energy where the meter exposes these registers via Modbus RTU. Check the register list in the template for the specific tariff registers available.

Free Modbus template: F&F Electricity energy meter LE-03MW

The F&F LE-03MW is a MID-compliant 3-phase 2-wire electricity meter for direct measurement up to 80A. This Modbus RTU template reads voltages, currents, active/reactive/apparent power, power factor, frequency, and bidirectional energy across 4 tariff zones.

Registers (66)

66 read / 0 write

Name	Address	Function	Type	Unit	Access
Consumed active energy	264	FC03	float32	kWh	R
Exported active energy	272	FC03	float32	kWh	R
Total reactive energy	280	FC03	float32	kWh	R
Consumed reactive energy	288	FC03	float32	kWh	R
L2 phase - consumed active energy	268	FC03	float32	kWh	R
L2 phase - exported active energy	276	FC03	float32	kWh	R
L2 phase - reactive energy	284	FC03	float32	kWh	R
Active Energy Σ T2	4147	FC03	float32	kWh	R
L1 phase - consumed active energy	4161	FC03	float32	kWh	R
L1 phase - exported active energy	274	FC03	float32	kWh	R
L1 phase - reactive energy	282	FC03	float32	kWh	R
L1 phase - consumed reactive energy	290	FC03	float32	kWh	R
L3 phase - consumed active energy	270	FC03	float32	kWh	R
L3 phase - exported active energy	278	FC03	float32	kWh	R
L3 phase - reactive energy	286	FC03	float32	kWh	R
Active Energy Σ T2, exp	4189	FC03	float32	kWh	R
Total Active Energy Σ (T1_T2), imp	304	FC03	float32	kWh	R
Total Active Energy Σ (T1_T2), exp	4335	FC03	float32	kWh	R
L1 Phase - active power	30	FC03	float32	kW	R
L2 Phase - active power	32	FC03	float32	kW	R
L3 Phase - active power	34	FC03	float32	kW	R
Active Power Σ	28	FC03	float32	kW	R
Reactive Energy 1st phase T1, imp	4193	FC03	float32	kvarh	R
Reactive Energy 2nd phase T1, imp	4197	FC03	float32	kvarh	R
Reactive Energy 3rd phase T1, imp	4201	FC03	float32	kvarh	R
Reactive Energy Σ T1, imp	4205	FC03	float32	kvarh	R
Reactive Energy 1st phase T2, imp	4209	FC03	float32	kvarh	R
Reactive Energy 2nd phase T2, imp	4213	FC03	float32	kvarh	R
Reactive Energy 3rd phase T2, imp	4217	FC03	float32	kvarh	R
Reactive Energy Σ T2, imp	4221	FC03	float32	kvarh	R
Reactive Energy 1st phase T1, exp	4225	FC03	float32	kvarh	R
Reactive Energy 2nd phase T1, exp	4229	FC03	float32	kvarh	R
Reactive Energy 3rd phase T1, exp	4233	FC03	float32	kvarh	R
Reactive Energy Σ T1, exp	4237	FC03	float32	kvarh	R
Reactive Energy 1st phase T2, exp	4241	FC03	float32	kvarh	R
Reactive Energy 2nd phase T2, exp	4245	FC03	float32	kvarh	R
Reactive Energy 3rd phase T2, exp	4249	FC03	float32	kvarh	R
Reactive Energy Σ T2, exp	4253	FC03	float32	kvarh	R
Reactive Energy Σ T1, capacitive	4305	FC03	uint16	kvarh	R
Reactive Energy Σ T2, capacitive	4309	FC03	uint16	kvarh	R
Reactive Energy Σ T1, inductive	4313	FC03	uint16	kvarh	R
Reactive Energy Σ T2, inductive	4317	FC03	uint16	kvarh	R
L1 phase - reactive power	38	FC03	uint16	kvar	R
L2 Phase - reactive power	40	FC03	uint16	kvar	R
L3 phase - reactive power	42	FC03	uint16	kvar	R
Total reactive power	36	FC03	float32	kvar	R
Apparent Energy Σ T1	4321	FC03	float32	kVAh	R
Apparent Energy Σ T2	4325	FC03	float32	kVAh	R
L2 Phase - apparent power	48	FC03	float32	kVA	R
L3 Phase - apparent power	50	FC03	float32	kVA	R
Total apparent power	44	FC03	float32	kVA	R
L1 Phase Voltage	14	FC03	float32	V	R
L2 Phase Voltage	16	FC03	float32	V	R
L3 Phase Voltage	18	FC03	float32	V	R
L1 Phase Current	22	FC03	float32	A	R
L2 Phase Current	24	FC03	float32	A	R
L3 Phase Current	26	FC03	float32	A	R
L1 phase - power factor	54	FC03	float32		R
L2 phase - power factor	56	FC03	float32		R
L3 phase - power factor	58	FC03	float32		R
Total power factor	52	FC03	float32		R
Frequency	20	FC03	float32	Hz	R
Total Active Energy	256	FC03	float32		R
L1 phase - total active energy	258	FC03	float32		R
L2 phase - total active energy	260	FC03	float32		R
L3 phase - total active energy	262	FC03	float32		R

F&F Electricity energy meter LE-03MW

Overview

Key readings

Use cases

Installation

Things to watch for

Registers (66)

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