Siemens Sentron PAC 4200 Modbus register map

Also covers SENTRON PAC4200, PAC4200, 7KM4211-1BA00-3AA0, 7KM4212-0BA00-3AA0

Power monitoring device for panel mounting with Ethernet (Modbus TCP); Modbus RTU through the PAC RS485 expansion module

Official
267 registers
Modbus TCP and RTU
Revision 3 · 2026-11-10
Identity: 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 TCP and RTU
Unit ID: 1
TCP port: 502
Serial: 19200 8E1 · 19200 baud, 8 data bits, even parity, 1 stop bit
Byte / word order: ABCD · bytes big-endian, words high first
Addresses: 0-based

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

Map

Registers: 267 holding registers
Groups: 9
Revision: 3 · 2026-11-10
Added: 2026-10-14 (2026-10-14)
File: maps/siemens/sentron-pac-4200.mbmap.json · 44 KB · history
SHA-256: d0aebafeacd4ef7bbfdb0ff9ea47d4eb1518d5be845c9fc88a0e8e061f03078e
Manufacturer: siemens.com

Device identity

What a tool can read to check that this map fits the connected device (SPEC.md section 4.7 and 4.8).

From the device with FC43 Read Device Identification · answered by unit ID, not by a register address
Role	Field	Where in the answer
—	Manufacturer	object 0 (VendorName)
—	Manufacturer device name	object 1 (ProductCode)
Firmware	Firmware version / bootloader version	object 2 (MajorMinorRevision)

Sources and notes

SENTRON PAC4200 Power Monitoring Device, System Manual · version A5E02316180B-03, 2010-09
appendix A.3, tables A-1, A-12, A-14, A-24, A-26 and A-28

Source: Siemens, "SENTRON PAC4200 Power Monitoring Device, System Manual", A5E02316180B-03 (09/2010), appendix A.3

Addresses are the Modbus offsets of the manual. Values are read with FC03 or FC04; settings are written with FC10 and commands with FC06.
Read every value from its first register with its full length: a read that starts or ends inside a multi-register value returns an error.
Not in this map: load profile, maximum and minimum values with time stamps, harmonics, limit and I/O settings (50019 onwards) and the I&M data blocks.

Area	Address	Type	Access	Unit	Description
HR	1	float32 ABCD	R	V
HR	3	float32 ABCD	R	V
HR	5	float32 ABCD	R	V
HR	7	float32 ABCD	R	V
HR	9	float32 ABCD	R	V
HR	11	float32 ABCD	R	V
HR	13	float32 ABCD	R	A
HR	15	float32 ABCD	R	A
HR	17	float32 ABCD	R	A
HR	19	float32 ABCD	R	VA
HR	21	float32 ABCD	R	VA
HR	23	float32 ABCD	R	VA
HR	25	float32 ABCD	R	W
HR	27	float32 ABCD	R	W
HR	29	float32 ABCD	R	W
HR	31	float32 ABCD	R	var
HR	33	float32 ABCD	R	var
HR	35	float32 ABCD	R	var
HR	37	float32 ABCD	R		Range 0 ... 1
HR	39	float32 ABCD	R		Range 0 ... 1
HR	41	float32 ABCD	R		Range 0 ... 1
HR	43	float32 ABCD	R	%	Range 0 ... 100
HR	45	float32 ABCD	R	%	Range 0 ... 100
HR	47	float32 ABCD	R	%	Range 0 ... 100
HR	55	float32 ABCD	R	Hz	Range 45 ... 65
HR	57	float32 ABCD	R	V
HR	59	float32 ABCD	R	V
HR	61	float32 ABCD	R	A
HR	63	float32 ABCD	R	VA
HR	65	float32 ABCD	R	W
HR	67	float32 ABCD	R	var
HR	69	float32 ABCD	R
HR	71	float32 ABCD	R	%	Range 0 ... 100
HR	73	float32 ABCD	R	%	Range 0 ... 100
HR	75	float32 ABCD	R	V
HR	77	float32 ABCD	R	V
HR	79	float32 ABCD	R	V
HR	81	float32 ABCD	R	V
HR	83	float32 ABCD	R	V
HR	85	float32 ABCD	R	V
HR	87	float32 ABCD	R	A
HR	89	float32 ABCD	R	A
HR	91	float32 ABCD	R	A
HR	93	float32 ABCD	R	VA
HR	95	float32 ABCD	R	VA
HR	97	float32 ABCD	R	VA
HR	99	float32 ABCD	R	W
HR	101	float32 ABCD	R	W
HR	103	float32 ABCD	R	W
HR	105	float32 ABCD	R	var
HR	107	float32 ABCD	R	var
HR	109	float32 ABCD	R	var
HR	111	float32 ABCD	R		Range 0 ... 1
HR	113	float32 ABCD	R		Range 0 ... 1
HR	115	float32 ABCD	R		Range 0 ... 1
HR	117	float32 ABCD	R	%	Range 0 ... 100
HR	119	float32 ABCD	R	%	Range 0 ... 100
HR	121	float32 ABCD	R	%	Range 0 ... 100
HR	129	float32 ABCD	R	Hz	Range 45 ... 65
HR	131	float32 ABCD	R	V
HR	133	float32 ABCD	R	V
HR	135	float32 ABCD	R	A
HR	137	float32 ABCD	R	VA
HR	139	float32 ABCD	R	W
HR	141	float32 ABCD	R	var
HR	143	float32 ABCD	R
HR	145	float32 ABCD	R	V
HR	147	float32 ABCD	R	V
HR	149	float32 ABCD	R	V
HR	151	float32 ABCD	R	V
HR	153	float32 ABCD	R	V
HR	155	float32 ABCD	R	V
HR	157	float32 ABCD	R	A
HR	159	float32 ABCD	R	A
HR	161	float32 ABCD	R	A
HR	163	float32 ABCD	R	VA
HR	165	float32 ABCD	R	VA
HR	167	float32 ABCD	R	VA
HR	169	float32 ABCD	R	W
HR	171	float32 ABCD	R	W
HR	173	float32 ABCD	R	W
HR	175	float32 ABCD	R	var
HR	177	float32 ABCD	R	var
HR	179	float32 ABCD	R	var
HR	181	float32 ABCD	R		Range 0 ... 1
HR	183	float32 ABCD	R		Range 0 ... 1
HR	185	float32 ABCD	R		Range 0 ... 1
HR	187	float32 ABCD	R	Hz	Range 45 ... 65
HR	189	float32 ABCD	R	V
HR	191	float32 ABCD	R	V
HR	193	float32 ABCD	R	A
HR	195	float32 ABCD	R	VA
HR	197	float32 ABCD	R	W
HR	199	float32 ABCD	R	var
HR	201	float32 ABCD	R
HR	203	uint32 ABCD	R
HR	205	uint32 ABCD	R
HR	207	uint32 ABCD	R
HR	209	uint32 ABCD	R
HR	211	uint32 ABCD	R

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).