inepro Metering PRO380-Mod three-phase energy meter Modbus register map

Updated 24 October 2026

Short answer

The PRO380-Mod is inepro's MID-certified three-phase DIN-rail energy meter (direct connection up to 100 A, or a CT version) with an RS485 Modbus RTU port. Every measurement is an IEEE 754 float sent high word first and read with function 03 from hex address blocks 4000h (setup), 5000h (live values) and 6000h (energy). This map covers phase voltages, currents, powers, power factor, frequency, total/tariff/per-phase energy and the writable address, baud, parity, tariff, S0 and combination-code settings.

This page lists 75 Modbus registers for the inepro Metering PRO380-Mod three-phase energy meter — 8 writable — with the table, 0-based wire address, data type, word order, scale, units and access of each, re-typed from inepro Metering’s own free documentation (linked below) and checked against it.

Manufacturer: inepro Metering
Model: PRO380-Mod three-phase energy meter
Equipment type: Energy meter
Registers: 75 (8 writable)
Transport: Modbus RTU
Default unit ID: 1
Default serial: 9600 baud, 8E1
Documented addressing: hexadecimal, 0-based
32-bit word order: ABCD high word first (big-endian)
Also known as: PRO380 Mod, PRO380-Mod CT, PRO380-MOD, inepro PRO380, PRO380 MID
Source document: PRO380 Series MID Three phase energy meter PRO380-S, PRO380-Mb, PRO380-Mod - User manual · Version 2.18-8 · rev. 2026

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Integration notes: inepro Metering PRO380-Mod three-phase energy meter

Integration in brief

Wire RS485 to terminals 22/23, poll unit 1 at 9600 baud 8E1 with function 03, and decode each value as a high-word-first float. Live values sit at 5002h-5031h, energy at 6000h-6047h.

Minimum registers to map

Addresses are 0-based wire addresses. Enough to monitor and run the unit; map more as the job needs.

Register	Name	Type	Why	Access
HR 20482	L1 voltage	FLOAT32 ABCD	L1 voltage	Read
HR 20492	L1 current	FLOAT32 ABCD	L1 current	Read
HR 20498	Total active power	FLOAT32 ABCD	Total active power (kW)	Read
HR 20522	Power factor	FLOAT32 ABCD	Power factor	Read
HR 20488	Grid frequency	FLOAT32 ABCD	Grid frequency	Read
HR 24588	Forward active energy	FLOAT32 ABCD	Forward (import) active energy	Read
HR 24600	Reverse active energy	FLOAT32 ABCD	Reverse (export) active energy	Read

Enable Modbus control & writes

The manual describes no enable step for Modbus on the -Mod variant. Set the address in display Program mode 2, and baud/parity in Program mode 3 (4-digit password, default 0000), with the inepro IR software, or over Modbus at 4003h/4004h/4011h.

Byte order & addressing

Addresses are hex: 5012h is decimal 20498 on the wire.
Floats are ABCD (high word first).
Power is in kW/kvar/kVA, not W.
Default parity is even (8E1), not 8N1.
Total active energy (6000h) follows the combination code; read forward (600Ch) and reverse (6018h) for import and export.

Network setup

RS485 on terminals 22 and 23; defaults Modbus ID 1, 9600 baud, 8 data bits, even parity, 1 stop bit.
Parity can be changed to none or odd; data and stop bits are fixed.
Fit a 120 ohm / 0.25 W resistor across terminals 22 and 23 at the meter when testing through an RS485 converter.
The RS485 specification allows up to 60 meters (devices) on one bus; fewer at higher baud rates, depending on the converter.

Watch out for

Combination code 10 can only be set once; a meter on C-10 cannot be switched to another mode.
Program mode 3 settings (baud, parity, S0, combination code) need the display password (default 0000).
On CT versions the CT ratio is set once at first power-up and cannot be changed afterwards.

inepro Metering PRO380-Mod three-phase energy meter Modbus registers

Address = 0-based wire address (the documented number is shown under it when it differs) · Order: ABCD = high word first, CDAB = low word first · Scale: engineering value = raw × scale.

75 of 75 shown

inepro Metering PRO380-Mod three-phase energy meter Modbus register map
Table	Address	Name	Description	Type	Order	Units	Access	Values / bits
HR	16387doc 4003	Modbus ID	Slave address 1-247 (default 1); write with function 06.	INT16			Read/write
HR	16388doc 4004	Baud rate	Baud rate as a plain number, e.g. 9600 = 0x2580.	INT16			Read/write
HR	16389doc 4005	Protocol version		FLOAT32	ABCD		Read
HR	16391doc 4007	Software version		FLOAT32	ABCD		Read
HR	16393doc 4009	Hardware version		FLOAT32	ABCD		Read
HR	16395doc 400B	Meter amps	Current rating of the meter.	INT16		A	Read
HR	16397doc 400D	S0 output rate	Pulse output rate; write both registers with function 16.	FLOAT32	ABCD	imp/kWh	Read/write
HR	16399doc 400F	Combination code	How total energy combines forward and reverse.	INT16			Read/write	1 = Forward only; 4 = Reverse only; 5 = Forward + reverse; 6 = Reverse - forward; 9 = Forward - reverse; 10 = Forward - reverse (permanent once set); 11 = Forward - reverse
HR	16401doc 4011	Parity setting		INT16			Read/write	1 = Even; 2 = None; 3 = Odd
HR	16406doc 4016	Power down counter	Number of times the meter lost power; write 0 to reset.	INT16			Read/write
HR	16407doc 4017	Present quadrant	Present operating quadrant, whole meter.	INT16			Read
HR	16408doc 4018	L1 quadrant		INT16			Read
HR	16409doc 4019	L2 quadrant		INT16			Read
HR	16410doc 401A	L3 quadrant		INT16			Read
HR	20482doc 5002	L1 voltage		FLOAT32	ABCD	V	Read
HR	20484doc 5004	L2 voltage		FLOAT32	ABCD	V	Read
HR	20486doc 5006	L3 voltage		FLOAT32	ABCD	V	Read
HR	20488doc 5008	Grid frequency		FLOAT32	ABCD	Hz	Read
HR	20492doc 500C	L1 current		FLOAT32	ABCD	A	Read
HR	20494doc 500E	L2 current		FLOAT32	ABCD	A	Read
HR	20496doc 5010	L3 current		FLOAT32	ABCD	A	Read
HR	20498doc 5012	Total active power		FLOAT32	ABCD	kW	Read
HR	20500doc 5014	L1 active power		FLOAT32	ABCD	kW	Read
HR	20502doc 5016	L2 active power		FLOAT32	ABCD	kW	Read
HR	20504doc 5018	L3 active power		FLOAT32	ABCD	kW	Read
HR	20506doc 501A	Total reactive power		FLOAT32	ABCD	kvar	Read
HR	20508doc 501C	L1 reactive power		FLOAT32	ABCD	kvar	Read
HR	20510doc 501E	L2 reactive power		FLOAT32	ABCD	kvar	Read
HR	20512doc 5020	L3 reactive power		FLOAT32	ABCD	kvar	Read
HR	20514doc 5022	Total apparent power		FLOAT32	ABCD	kVA	Read
HR	20516doc 5024	L1 apparent power		FLOAT32	ABCD	kVA	Read
HR	20518doc 5026	L2 apparent power		FLOAT32	ABCD	kVA	Read
HR	20520doc 5028	L3 apparent power		FLOAT32	ABCD	kVA	Read
HR	20522doc 502A	Power factor		FLOAT32	ABCD		Read
HR	20524doc 502C	L1 power factor		FLOAT32	ABCD		Read
HR	20526doc 502E	L2 power factor		FLOAT32	ABCD		Read
HR	20528doc 5030	L3 power factor		FLOAT32	ABCD		Read
HR	24576doc 6000	Total active energy	Forward and reverse combined per the combination code (400Fh).	FLOAT32	ABCD	kWh	Read
HR	24578doc 6002	T1 total active energy		FLOAT32	ABCD	kWh	Read
HR	24580doc 6004	T2 total active energy		FLOAT32	ABCD	kWh	Read
HR	24582doc 6006	L1 total active energy		FLOAT32	ABCD	kWh	Read
HR	24584doc 6008	L2 total active energy		FLOAT32	ABCD	kWh	Read
HR	24586doc 600A	L3 total active energy		FLOAT32	ABCD	kWh	Read
HR	24588doc 600C	Forward active energy		FLOAT32	ABCD	kWh	Read
HR	24590doc 600E	T1 forward active energy		FLOAT32	ABCD	kWh	Read
HR	24592doc 6010	T2 forward active energy		FLOAT32	ABCD	kWh	Read
HR	24594doc 6012	L1 forward active energy		FLOAT32	ABCD	kWh	Read
HR	24596doc 6014	L2 forward active energy		FLOAT32	ABCD	kWh	Read
HR	24598doc 6016	L3 forward active energy		FLOAT32	ABCD	kWh	Read
HR	24600doc 6018	Reverse active energy		FLOAT32	ABCD	kWh	Read
HR	24602doc 601A	T1 reverse active energy		FLOAT32	ABCD	kWh	Read
HR	24604doc 601C	T2 reverse active energy		FLOAT32	ABCD	kWh	Read
HR	24606doc 601E	L1 reverse active energy		FLOAT32	ABCD	kWh	Read
HR	24608doc 6020	L2 reverse active energy		FLOAT32	ABCD	kWh	Read
HR	24610doc 6022	L3 reverse active energy		FLOAT32	ABCD	kWh	Read
HR	24612doc 6024	Total reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24614doc 6026	T1 total reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24616doc 6028	T2 total reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24618doc 602A	L1 total reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24620doc 602C	L2 total reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24622doc 602E	L3 total reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24624doc 6030	Forward reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24626doc 6032	T1 forward reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24628doc 6034	T2 forward reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24630doc 6036	L1 forward reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24632doc 6038	L2 forward reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24634doc 603A	L3 forward reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24636doc 603C	Reverse reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24638doc 603E	T1 reverse reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24640doc 6040	T2 reverse reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24642doc 6042	L1 reverse reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24644doc 6044	L2 reverse reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24646doc 6046	L3 reverse reactive energy		FLOAT32	ABCD	kvarh	Read
HR	24648doc 6048	Tariff	Active tariff; 11/12 switch tariff without saving it.	INT16			Read/write	1 = T1; 2 = T2; 11 = T1 (not saved); 12 = T2 (not saved)
HR	24649doc 6049	Resettable day counter	Forward energy since last reset; write 0.0 with function 16 to reset.	FLOAT32	ABCD	kWh	Read/write

Notes on this map

The PDF is the user manual linked from the official PRO380-Mod product page (ineprometering.com/product/pro380-mod-electricity-meter, documentation tab).
'Float ABCD' in the map = IEEE 754 32-bit float, high word first. 'Signed' rows are 16-bit integers.
Units are as printed: power in kW, kvar and kVA (not W), energy in kWh and kvarh.
Left out: Voltage (5000h), Current (500Ah) and Error code (4015h) - the map marks them 'PRO1 only'.
Left out: serial number (4000h), meter code (4002h), CT ratio (400Ch), LCD cycle time (4010h), checksum (401Bh) and active status word (401Dh). They are typed only as 'HEX' with no encoding given; the LCD-time example writes 0025 for 25 s, which suggests BCD. Current direction (4012h-4014h, 'ASCII') and CT mode (401Fh) are left out because their values are not described.
S0 output rate (400Dh) accepts 10000, 2000, 1000, 100, 10, 1, 0.1 or 0.01 imp/kWh.
The manual says the older V1.14 register map still works; it is not covered here.
Baud rates differ between sections: the RS485 spec lists 1200-9600, the Modbus appendix and display menu also list 300 and 600 (and 2400). 9600, 4800 and 1200 appear in every list.
The day-counter write row prints a register length of 1, but its example frame writes 2 registers (4 zero bytes) with function 16; it is listed here as a 2-register float.

Check it against the live device. A register map tells you what the controller can expose; the unit in front of you may differ by firmware or options. Read a few registers and compare them with the unit’s own display; for a 32-bit value the float and byte-order decoder shows all four word orders at once, so a wrong word order or scale is obvious. New to this? Read what a register map is and why addresses are off by one.

Questions about the inepro Metering PRO380-Mod three-phase energy meter

What Modbus registers does the inepro Metering PRO380-Mod three-phase energy meter have?

This map lists 75 registers: 75 holding registers. 8 of them can be written. Registers vary with firmware, options and configuration, so confirm against the device.

Are the inepro Metering PRO380-Mod three-phase energy meter Modbus addresses 0-based or 1-based?

The manufacturer's document numbers registers hexadecimal, 0-based. Every address on this page is the 0-based wire address you put in the request; the documented number is shown under it where it differs. The map prints addresses in hex and they go into the request unchanged: the manual's example frames are 01 06 4003 000A (set Modbus ID) and 01 06 6048 0002 (set tariff). So 4003h is wire address 16387 and 5012h (total active power) is 20498. Do not enter the hex numbers as decimal.

What byte order does the inepro Metering PRO380-Mod three-phase energy meter use for 32-bit values?

Multi-register values in this map use ABCD (high word first (big-endian)). Set your client to this order for every 32/64-bit value in the table.

What are the minimum Modbus registers to integrate the inepro Metering PRO380-Mod three-phase energy meter?

Start with HR 20482 L1 voltage (L1 voltage); HR 20492 L1 current (L1 current); HR 20498 Total active power (Total active power (kW)); HR 20522 Power factor (Power factor); HR 20488 Grid frequency (Grid frequency); HR 24588 Forward active energy (Forward (import) active energy); HR 24600 Reverse active energy (Reverse (export) active energy).

How do I enable Modbus control of the inepro Metering PRO380-Mod three-phase energy meter?

Where is the official inepro Metering PRO380-Mod three-phase energy meter Modbus documentation?

The source is PRO380 Series MID Three phase energy meter PRO380-S, PRO380-Mb, PRO380-Mod - User manual (Version 2.18-8), revision 2026, published free by inepro Metering at https://cdn.prod.website-files.com/6617f74190bf0a53bfd776e8/69f0b42e8df8da5157fb250d_PRO380%20user%20manual%20V2.18-8.pdf.

Source: PRO380 Series MID Three phase energy meter PRO380-S, PRO380-Mb, PRO380-Mod - User manual · Version 2.18-8 · rev. 2026. Register numbers, types, scaling and units are reproduced as published; descriptions are our own.