Janitza B21, B23, B24, ECS, UMG103 MODBUS registers: read online

Connect Janitza to the computer through a USB-to-serial or RS485 adapter and read its registers in your browser: click "Read register values online" under the model (Chrome or Edge, nothing to install). The tables below list the MODBUS offset, unit, data type and scale of every register shown. For logging 24/7 into a database, CSV files or Excel, use the Advanced Serial Data Logger (for MODBUS RTU) or Advanced TCP/IP Data Logger (for MODBUS TCP): they poll the complete map of every model on this page and provide continuous Janitza logger and poll.

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Janitza (B21,B23,B24) - MODBUS Mapping

Connection and addressing notes

Protocol: Modbus
Register set: standard register set compatible with UMG devices
Register addressing: addresses expressed exactly as sent on the bus
Address adjustment: none, do not subtract 40000 or reduce by 1
Start Reg: decimal (DEZ)
Size: 16-bit Modbus registers
Data format: FLOAT (IEEE754)

Registers in the map: 53 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: single.

MODBUS offset	Description	Units	Data type
19000	Voltage L1-N	V	single
19002	Voltage L2-N	V	single
19004	Voltage L3-N	V	single
19006	Voltage L1-L2	V	single
19008	Voltage L2-L3	V	single
19010	Voltage L3-L1	V	single
19012	Apparent current, L1-N	A	single
19014	Apparent current, L2-N	A	single
19016	Apparent current, L3-N	A	single
19020	Real power L1-N	W	single
19022	Real power L2-N	W	single
19024	Real power L3-N	W	single
19026	Real power L1+L2+L3	W	single
19028	Apparent power L1-N	VA	single
19030	Apparent power L2-N	VA	single
19032	Apparent power L3-N	VA	single
19034	Apparent power L1+L2+L3	VA	single
19036	Reactive power L1	var	single
19038	Reactive power L2	var	single
19040	Reactive power L3	var	single
19042	Reactive power L1+L2+L3	var	single
19044	Power factor L1		single
19046	Power factor L2		single
19048	Power factor L3		single
19050	Measured frequency	Hz	single
19054	Real energy L1	Wh	single
19056	Real energy L2	Wh	single
19058	Real energy L3	Wh	single
19060	Real energy L1+L2+L3	Wh	single
19062	Real energy L1, consumed	Wh	single
19064	Real energy L2, consumed	Wh	single
19066	Real energy L3, consumed	Wh	single
19068	Real energy L1+L2+L3, consumed	Wh	single
19070	Real energy L1, delivered	Wh	single
19072	Real energy L2, delivered	Wh	single
19074	Real energy L3, delivered	Wh	single
19076	Real energy L1+L2+L3, delivered	Wh	single
19078	Apparent energy L1	VAh	single
19080	Apparent energy L2	VAh	single
19082	Apparent energy L3	VAh	single
19084	Apparent energy L1+L2+L3	VAh	single
19086	Reactive energy L1	varh	single
19088	Reactive energy L2	varh	single
19090	Reactive energy L3	varh	single
19092	Reactive energy L1+L2+L3	varh	single
19094	Reactive energy L1, inductive	varh	single
19096	Reactive energy L2, inductive	varh	single
19098	Reactive energy L3, inductive	varh	single
19100	Reactive energy L1+L2+L3, inductive	varh	single
19102	Reactive energy L1, capacitive	varh	single

This is not the complete map: 50 of 53 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

Janitza (ECS) - MODBUS Measurements

Connection and addressing notes

Protocol: Modbus
Interface variants: Basic and Full
Interface and counter type columns: TA, TE, SA, SE
Register addressing: register addresses used directly as map offsets
Speed register: 4112
Parity register: 4113
Stop bits register: 4114
Device address register: 4115
Value format register: 4117
Unsupported quantities: returned as 0

Registers in the map: 69 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: dword, int64, word.

MODBUS offset	Description	Units	Data type	Scale
4099	Device type		word
4100	Firmware version		word
4101	Range overflow alarm		word
4102	Running tariff		dword
4104	PID bytes 1 and 2		word
4105	PID bytes 3 and 4		word
4106	PID bytes 5 and 6		word
4107	PID bytes 7 and 8		word
4108	PID bytes 9 and 10		word
4109	PID bytes 11 and 12		word
4110	PID bytes 13 and 14		word
4119	Active energy 1st phase T1, imp	kWh	int64	formula
4123	Active energy 2nd phase T1, imp	kWh	int64	formula
4127	Active energy 3rd phase T1, imp	kWh	int64	formula
4131	Active energy sum T1, imp	kWh	int64	formula
4135	Active energy 1st phase T2, imp	kWh	int64	formula
4139	Active energy 2nd phase T2, imp	kWh	int64	formula
4143	Active energy 3rd phase T2, imp	kWh	int64	formula
4147	Active energy sum T2, imp	kWh	int64	formula
4151	Active power 1st phase		dword
4153	Active power 2nd phase		dword
4155	Active power 3rd phase		dword
4157	Active power sum		int64	formula
4161	Active energy 1st phase T1, exp	kWh	int64	formula
4165	Active energy 2nd phase T1, exp	kWh	int64	formula
4169	Active energy 3rd phase T1, exp	kWh	int64	formula
4173	Active energy sum T1, exp	kWh	int64	formula
4177	Active energy 1st phase T2, exp	kWh	int64	formula
4181	Active energy 2nd phase T2, exp	kWh	int64	formula
4185	Active energy 3rd phase T2, exp	kWh	int64	formula
4189	Active energy sum T2, exp	kWh	int64	formula
4193	Reactive energy 1st phase T1, imp	kvarh	int64	formula
4197	Reactive energy 2nd phase T1, imp	kvarh	int64	formula
4201	Reactive energy 3rd phase T1, imp	kvarh	int64	formula
4205	Reactive energy sum T1, imp	kvarh	int64	formula
4209	Reactive energy 1st phase T2, imp	kvarh	int64	formula
4213	Reactive energy 2nd phase T2, imp	kvarh	int64	formula
4217	Reactive energy 3rd phase T2, imp	kvarh	int64	formula
4221	Reactive energy sum T2, imp	kvarh	int64	formula
4225	Reactive energy 1st phase T1, exp	kvarh	int64	formula
4229	Reactive energy 2nd phase T1, exp	kvarh	int64	formula
4233	Reactive energy 3rd phase T1, exp	kvarh	int64	formula
4237	Reactive energy sum T1, exp	kvarh	int64	formula
4241	Reactive energy 1st phase T2, exp	kvarh	int64	formula
4245	Reactive energy 2nd phase T2, exp	kvarh	int64	formula
4249	Reactive energy 3rd phase T2, exp	kvarh	int64	formula
4253	Reactive energy sum T2, exp	kvarh	int64	formula
4257	Reactive power 1st phase	kvar	dword
4259	Reactive power 2nd phase	kvar	dword
4261	Reactive power 3rd phase	kvar	dword

This is not the complete map: 50 of 69 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

Janitza (UMG103) - MODBUS Registers Map

Registers in the map: 1274 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: integer, single, smallint, word.

MODBUS offset	Description	Units	Data type
911	Serial number		integer
913	Firmware release		smallint
914	Hardware expansion		smallint
19000	Voltage L1 N	V	single
19002	Voltage L2 N	V	single
19004	Voltage L3 N	V	single
19006	Voltage L1 L2	V	single
19008	Voltage L2 L3	V	single
19010	Voltage L3 L1	V	single
19012	Apparent current, L1	A	single
19014	Apparent current, L2	A	single
19016	Apparent current, L3	A	single
19018	Vector sum; in=i1+i2+i3	A	single
19020	Real power L1	W	single
19022	Real power L2	W	single
19024	Real power L3	W	single
19026	Sum; psum3=p1+p2+p3	W	single
19028	Apparent power L1	VA	single
19030	Apparent power L2	VA	single
19032	Apparent power L3	VA	single
19034	Sum; ssum3=s1+s2+s3	VA	single
19036	Reactive power (mains frequ.) L1	var	single
19038	Reactive power (mains frequ.) L2	var	single
19040	Reactive power (mains frequ.) L3	var	single
19042	Sum; qsum3=Q1+Q2+Q3	var	single
19044	Fund.power factor, cosphi; UL1 IL1		single
19046	Fund.power factor, cosphi; UL2 IL2		single
19048	Fund.power factor, cosphi; UL3 IL3		single
19050	Measured frequency	Hz	single
19052	Rotation field		single
19060	Real energy l1..l3	Wh	single
19062	Real energy l1, consumed	Wh	single
19064	Real energy l2, consumed	Wh	single
19066	Real energy l3, consumed	Wh	single
19068	Real energy l1..l3, consumed, rate 1	Wh	single
19070	Real energy l1, delivered	Wh	single
19072	Real energy l2, delivered	Wh	single
19074	Real energy l3, delivered	Wh	single
19076	Real energy l1..l3, delivered	Wh	single
19078	Apparent energy L1	VAh	single
19080	Apparent energy L2	VAh	single
19082	Apparent energy L3	VAh	single
19084	Apparent energy l1..l3	VAh	single
19092	Reactive energy l1..l3	varh	single
19094	Reactive energy, inductive, L1	varh	single
19096	Reactive energy, inductive, L2	varh	single
19098	Reactive energy, inductive, L3	varh	single
19100	Reactive energy l1..l3, ind	varh	single
19102	Reactive energy, capacitive, L1	varh	single
19104	Reactive energy, capacitive, L2	varh	single

This is not the complete map: 50 of 1274 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

Janitza (UMG104) - MODBUS Measurements

Connection and addressing notes

Protocol: Modbus
Interface: RS485 and RS232
Register addressing: bus register numbers used directly as map offsets
Device address register: 10180
RS485 mode register: 10182
RS485 baud rate register: 10184
RS232 baud rate register: 10186
RS232 mode register: 10188
Data format: float, int, short, word, string

Registers in the map: 2895 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: dword, integer, single, smallint, string(16).

MODBUS offset	Description	Units	Data type
10176	Serial number		dword
13437	Software release		string(16)
19000	Voltage L1 N	V	single
19002	Voltage L2 N	V	single
19004	Voltage L3 N	V	single
19006	Voltage L1 L2	V	single
19008	Voltage L2 L3	V	single
19010	Voltage L3 L1	V	single
19012	Apparent current, L1	A	single
19014	Apparent current, L2	A	single
19016	Apparent current, L3	A	single
19018	Vector sum; in=i1+i2+i3	A	single
19020	Real power L1	W	single
19022	Real power L2	W	single
19024	Real power L3	W	single
19026	Sum; psum3=p1+p2+p3	W	single
19028	Apparent power L1	VA	single
19030	Apparent power L2	VA	single
19032	Apparent power L3	VA	single
19034	Sum; ssum3=s1+s2+s3	VA	single
19036	Reactive power (mains frequ.) L1	var	single
19038	Reactive power (mains frequ.) L2	var	single
19040	Reactive power (mains frequ.) L3	var	single
19042	Sum; qsum3=Q1+Q2+Q3	var	single
19044	Fund.power factor, cosphi; UL1 IL1		single
19046	Fund.power factor, cosphi; UL2 IL2		single
19048	Fund.power factor, cosphi; UL3 IL3		single
19050	Measured frequency	Hz	single
19052	Rotation field		single
19054	Real energy L1	Wh	single
19056	Real energy L2	Wh	single
19058	Real energy L3	Wh	single
19060	Real energy l1..l3	Wh	single
19062	Real energy l1, consumed	Wh	single
19064	Real energy l2, consumed	Wh	single
19066	Real energy l3, consumed	Wh	single
19068	Real energy l1..l3, consumed, rate 1	Wh	single
19070	Real energy l1, delivered	Wh	single
19072	Real energy l2, delivered	Wh	single
19074	Real energy l3, delivered	Wh	single
19076	Real energy l1..l3, delivered	Wh	single
19078	Apparent energy L1	VAh	single
19080	Apparent energy L2	VAh	single
19082	Apparent energy L3	VAh	single
19084	Apparent energy l1..l3	VAh	single
19086	Reaktive energy L1	varh	single
19088	Reaktive energy L2	varh	single
19090	Reaktive energy L3	varh	single
19092	Reaktive energy l1..l3	varh	single
19094	Reactive energy, inductive, L1	varh	single

This is not the complete map: 50 of 2895 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

Janitza (UMG511) - MODBUS Registers Map

Connection and addressing notes

Protocol: Modbus
Register addressing: 19000 series addresses used directly as map offsets

Registers in the map: 61 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: single.

MODBUS offset	Description	Units	Data type
19000	Voltage L1 N	V	single
19002	Voltage L2 N	V	single
19004	Voltage L3 N	V	single
19006	Voltage L1 L2	V	single
19008	Voltage L2 L3	V	single
19010	Voltage L3 L1	V	single
19012	Apparent current, L1 N	A	single
19014	Apparent current, L2 N	A	single
19016	Apparent current, L3 N	A	single
19018	Vector sum; in=i1+i2+i3	A	single
19020	Real power L1 N	W	single
19022	Real power L2 N	W	single
19024	Real power L3 N	W	single
19026	Psum3=p1+p2+p3	W	single
19028	Apparent power L1 N	VA	single
19030	Apparent power L2 N	VA	single
19032	Apparent power L3 N	VA	single
19034	Sum; ssum3=s1+s2+s3	VA	single
19036	Reactive power L1 (fundamental comp.)	var	single
19038	Reactive power L2 (fundamental comp.)	var	single
19040	Reactive power L3 (fundamental comp.)	var	single
19042	Qsum3=Q1+Q2+Q3 (fundamental comp.)	var	single
19044	Cosphi; UL1 IL1 (fundamental comp.)		single
19046	Cosphi; UL2 IL2 (fundamental comp.)		single
19048	Cosphi; UL3 IL3 (fundamental comp.)		single
19050	Measured frequency	Hz	single
19052	Rotation field		single
19054	Real energy L1	Wh	single
19056	Real energy L2	Wh	single
19058	Real energy L3	Wh	single
19060	Real energy l1..l3	Wh	single
19062	Real energy l1, consumed	Wh	single
19064	Real energy l2, consumed	Wh	single
19066	Real energy l3, consumed	Wh	single
19068	Real energy l1..l3, consumed, rate 1	Wh	single
19070	Real energy l1, delivered	Wh	single
19072	Real energy l2, delivered	Wh	single
19074	Real energy l3, delivered	Wh	single
19076	Real energy l1..l3, delivered	Wh	single
19078	Apparent energy L1	VAh	single
19080	Apparent energy L2	VAh	single
19082	Apparent energy L3	VAh	single
19084	Apparent energy l1..l3	VAh	single
19086	Reaktive energy L1 (fundamental comp.)	varh	single
19088	Reaktive energy L2 (fundamental comp.)	varh	single
19090	Reaktive energy L3 (fundamental comp.)	varh	single
19092	Reaktive energy l1..l3 (fundamental comp.)	varh	single
19094	Reactive energy, inductive, L1 (fundamental comp.)	varh	single
19096	Reactive energy, inductive, L2 (fundamental comp.)	varh	single
19098	Reactive energy, inductive, L3 (fundamental comp.)	varh	single

This is not the complete map: 50 of 61 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

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