Allen-Bradley Powermonitor 3000 Modbus register map

Also covers 1404 (Powermonitor 3000), 1404-M4, 1404-M5, 1404-M6, 1404-M8

Bulletin 1404 Powermonitor 3000 power monitors (M4, M5, M6, M8), native RS485 port with Modbus RTU

Official
160 registers
Modbus RTU
Revision 2 · 2026-10-17
Identity: model, firmware

Official: Written from the manufacturer's documentation, but not tested on a device yet. Check the map against the manufacturer's documentation before you write to a live device. Tested it? Report a test.

Download .mbmap.json Raw JSON View on GitHub Suggest a correction Report a problem

Communication

Protocol: Modbus RTU
Unit ID: 1
Serial: 9600 8E1 · 9600 baud, 8 data bits, even parity, 1 stop bit defaults
Byte / word order: ABCD · bytes big-endian, words high first
Addresses: 1-based · wire address = address − 1
Max read: 100 registers per request

Connection values are defaults: the device may be configured differently.

Map

Registers: 63 holding registers, 97 input registers
Groups: 12
Revision: 2 · 2026-10-17
Added: 2026-10-14 (2026-10-14)
File: maps/allen-bradley/powermonitor-3000.mbmap.json · 26 KB · history
SHA-256: ba389b106cd0f0c9204cc441db376a06777334558daa12e913ddcbf7ee66bd5c
Manufacturer: rockwellautomation.com

Device identity

What a tool can read to check that this map fits the connected device (SPEC.md section 4.7). Registers with a role are read like any other register.

Registers
Role	Register	Address	Type	Values
Model	Bulletin number	input 601	int16	1404 = 1404 (Powermonitor 3000)
Firmware	Application firmware	input 613	int16

Sources and notes

Powermonitor 3000 User Manual · version 1404-UM001F-EN-P, 2009-11
chapter 4 (Modbus RTU slave) and appendix A data tables

Source: Rockwell Automation, "Powermonitor 3000 User Manual", publication 1404-UM001F-EN-P (November 2009), chapter 4 and appendix A

Modbus RTU on the native RS-485 or RS-232 port (auto-sense by default); Modbus ASCII and TCP are not supported. FC03/FC04 read, FC06/FC16 write, at most 100 registers per request.
Addresses are the one-based numbers of the manual: 30101 = input register 101, 40001 = holding register 1.
Floats are IEEE 754, big endian, high word first; a float must be read from its first (odd) address.
Energies are split into five signed parts (× 10^9, 10^6, 10^3, 1, 10^-3); add them for the value.
Configuration changes need the password in the first element of each table. Setpoints, logs, oscillography, TOU and the other tables of appendix A are left out.

Area	Address	Type	Access	Unit	Scale	Description
IR	1	int16	R
IR	2	int16	R
IR	3	uint16	R			Bit n = setpoint output flag n+1
IR	4	bool bit 0	R
IR	4	bool bit 1	R
IR	4	bool bit 2	R
IR	5	int16	R			Rolls over after 29999
IR	6	int16	R
IR	101	float32 ABCD	R	A
IR	103	float32 ABCD	R	A
IR	105	float32 ABCD	R	A
IR	107	float32 ABCD	R	A
IR	109	float32 ABCD	R	V
IR	111	float32 ABCD	R	V
IR	113	float32 ABCD	R	V
IR	115	float32 ABCD	R	V
IR	117	float32 ABCD	R	V
IR	119	float32 ABCD	R	V
IR	121	float32 ABCD	R	V
IR	123	float32 ABCD	R	V
IR	125	float32 ABCD	R	Hz		Last cycle; 0 or 999 when out of range
IR	127	float32 ABCD	R
IR	201	float32 ABCD	R	A
IR	203	float32 ABCD	R	A
IR	205	float32 ABCD	R	A
IR	207	float32 ABCD	R	%
IR	209	float32 ABCD	R	V
IR	211	float32 ABCD	R	V
IR	213	float32 ABCD	R	%
IR	215	float32 ABCD	R			0 none, 1 ABC, 2 ACB
IR	217	float32 ABCD	R	Hz
IR	219	float32 ABCD	R			0 V1, 1 V2, 2 V3
IR	221	float32 ABCD	R
IR	301	float32 ABCD	R	W
IR	303	float32 ABCD	R	W
IR	305	float32 ABCD	R	W
IR	307	float32 ABCD	R	W		Signed to show direction
IR	309	float32 ABCD	R	var
IR	311	float32 ABCD	R	var
IR	313	float32 ABCD	R	var
IR	315	float32 ABCD	R	var
IR	317	float32 ABCD	R	VA
IR	319	float32 ABCD	R	VA
IR	321	float32 ABCD	R	VA
IR	323	float32 ABCD	R	VA
IR	325	float32 ABCD	R
IR	401	float32 ABCD	R	A
IR	403	float32 ABCD	R	W
IR	405	float32 ABCD	R	var
IR	407	float32 ABCD	R	VA
IR	409	float32 ABCD	R	A
IR	411	float32 ABCD	R	W
IR	413	float32 ABCD	R	var
IR	415	float32 ABCD	R	VA
IR	417	float32 ABCD	R	min
IR	419	float32 ABCD	R
IR	501	float32 ABCD	R	%		+ lead, - lag
IR	503	float32 ABCD	R	%
IR	505	float32 ABCD	R	%
IR	507	float32 ABCD	R	%
IR	509	float32 ABCD	R	%
IR	511	float32 ABCD	R	%
IR	513	float32 ABCD	R	%
IR	515	float32 ABCD	R	%
IR	517	float32 ABCD	R	%
IR	519	float32 ABCD	R	%
IR	521	float32 ABCD	R	%
IR	523	float32 ABCD	R	%
IR	525	float32 ABCD	R
IR	1201	float32 ABCD	R			1-9; selected through the harmonic analysis configuration table
IR	1203	float32 ABCD	R	%
IR	1205	float32 ABCD	R	%
IR	1207	float32 ABCD	R
IR	1209	float32 ABCD	R
IR	1211	float32 ABCD	R			M6/M8
IR	1213	float32 ABCD	R			M6/M8
IR	1215	float32 ABCD	R			M6/M8
IR	1217	float32 ABCD	R			M6/M8; -1 to 1
IR	1219	float32 ABCD	R			M6/M8
HR	501	int16	W			Needed to clear or preset energy counters; reads -1
HR	502	int16	RW			Bit field, see the manual section on clearing energy counters
HR	503	int16	R	kWh	×1000000000	Add the five parts for the value; each part is -999 to 999
HR	504	int16	R	kWh	×1000000
HR	505	int16	R	kWh	×1000
HR	506	int16	R	kWh
HR	507	int16	R	kWh	×0.001
HR	508	int16	R	kWh	×1000000000	Add the five parts for the value; each part is -999 to 999
HR	509	int16	R	kWh	×1000000
HR	510	int16	R	kWh	×1000
HR	511	int16	R	kWh
HR	512	int16	R	kWh	×0.001
HR	513	int16	R	kWh	×1000000000	Add the five parts for the value; each part is -999 to 999
HR	514	int16	R	kWh	×1000000
HR	515	int16	R	kWh	×1000
HR	516	int16	R	kWh
HR	517	int16	R	kWh	×0.001
HR	518	int16	R	kVAh	×1000000000	Add the five parts for the value; each part is -999 to 999
HR	519	int16	R	kVAh	×1000000
HR	520	int16	R	kVAh	×1000
HR	521	int16	R	kVAh

Help improve this map

I tested it on a deviceReport whether it worked, even if you did not write the map.
Suggest a correctionEdit the file on GitHub; it opens a pull request.
Report a problemA wrong address, type, scale or byte order.
Read the formatWhat each key of the file means (SPEC.md).