I see zero or incorrect values for energy registers. What should I check?

Confirm that energy registers (total consumption, partial consumption, and feedback) are set to uint32 datatype spanning two registers each. Earlier template versions may have used a different datatype, which causes misreads.

The meter does not respond on the Modbus bus. What could be wrong?

Verify the baud rate is set to 19200 and parity to odd on both the meter and the gateway. Also check that the slave address matches and that the RS-485 A and B wires are not swapped.

Power readings show negative values. Is this normal?

Yes. Power registers use signed int16, so negative values indicate energy flowing in the reverse direction, such as feed-in from a solar inverter.

Can I use this template with Modbus TCP instead of RTU?

This meter communicates over Modbus RTU only. If your gateway supports RTU-to-TCP conversion, the template can still be used, but the physical connection must be RS-485.

Free Modbus template: Loxone Modbus Electricity Meter (3 Phase)

Name: Loxone Modbus Electricity Meter (3 Phase)
Brand: Loxone
SKU: 786c4fbc-8e04-4fb9-9f60-edf066e302bd

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Free Modbus template: Loxone Modbus Electricity Meter (3 Phase) | ModbusCloud

Registers (21)

21 read / 0 write

Name	Address	Function	Type	Unit	Access
Total energy consumption	27	FC03	uint32	kWh	R
Partial energy consumption	29	FC03	uint32	kWh	R
Total energy feedback	31	FC03	uint32	kWh	R
Partial energy feedback	33	FC03	uint32	kWh	R
Effective voltage of Phase 1	35	FC03	uint16	V	R
Effective current of Phase 1	36	FC03	uint16	A	R
Effective active power of Phase 1	37	FC03	int16	kW	R
Effective reactive power of Phase 1	38	FC03	int16	kvar	R
cos phi Phase 1	39	FC03	uint16		R
Effective voltage of Phase 2	40	FC03	uint16	V	R
Effective current of Phase 2	41	FC03	uint16	A	R
Effective active power of Phase 2	42	FC03	int16	kW	R
Effective reactive power of Phase 2	43	FC03	int16	kvar	R
cos phi Phase 2	44	FC03	uint16		R
Effective voltage of Phase 3	45	FC03	uint16	V	R
Effective current of Phase 3	46	FC03	uint16	A	R
Effective active power of Phase 3	47	FC03	int16	kW	R
Effective reactive power of Phase 3	48	FC03	int16	kvar	R
cos phi Phase 3	49	FC03	uint16		R
Effective active power of all phases	50	FC03	int16	kW	R
Effective reactive power of all phases	51	FC03	int16	kvar	R

Loxone Modbus Electricity Meter (3 Phase)

Overview

Key readings

Use cases

Installation

Things to watch for

Registers (21)

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