WB-MAP3E measurement registers

General information

Detailed accuracy specifications: WB-MAP measured parameters, errors and web-interface names.

Template notation

The following notation is used in tables describing measured quantities.

For energy (AP, AN, RP, RN, S, NP, NN), the first letter (A, R, S, N) is the energy type and the second is the direction:

A — active;
R — reactive;
S — apparent, calculated as U_RMS * I_RMS;
N — non-active.

Direction:

P — forward (positive);
N — reverse (negative).

In the register tables, “Total” means the parameter is calculated across all three phases of the three-phase channel. If the table differs from the device template, use the corresponding register value in the template. Current templates are available here.

Notes on register table names

Register tables correspond to the meter templates.

Check the meter firmware version with the command

echo  -e `modbus_client --debug -mrtu -pnone -s2 /dev/ttyRS485-1 -a$mbusaddr -t0x03 -r250 -c 16 | grep Data | sed -e 's/0x00/\x/g' -e 's/Data://' -e 's/s//g'`|  xxd -r -p && echo ''

Here, $mbusaddr is the meter Modbus address.

Byte order, wide registers and value calculation

Some measured values exceed the 16-bit width of a Modbus register. These occupy consecutive registers: two for 32-bit values and four for 64-bit values. Some third-party software, such as ioBroker, calls signed 32-bit little-endian “signed 32-bit big-endian word swap”. If calculated results do not match the software readings, change its data type setting.

The tables use u32 and u64 for unsigned values, and s32 and s64 for signed values. The address shown is the first consecutive register.

The order of registers when decoding may be forward (big-endian) or reversed (little-endian). The order of the two bytes within each 16-bit register is always big-endian, as required by the standard.

Example: read four registers, 0x2200–0x2203:

Register number	0x2200	0x2201	0x2202	0x2203
Register contents	0xb4df	0x0dff	0x0000	0x0000

Look up the register table:

Legend
RO / RW	Read only / Read/Write
Shown in bold	Default register value
xN	Multiply the register value by this factor to obtain the value in the stated units. If omitted, assume 1
⚡	This register supports data transmission using events in Fast Modbus.
FW	Firmware version that introduced the register. Blank means it has always been available.
Error:	Value on error
Grey cell	Service register: purpose, format and contents may change in later firmware

Device Modbus registers
Address		Register parameters			Description	Values	FW
Dec	Hex	Type	Access	Format	Description	Values	FW
8704	0x2200	Input	RO	u64 little endian	Ch 2 Total AP energy Total forward active energy for channel 2	x10^-5, kWh	2.1

Little-endian register order means least significant register first. Therefore, combine the registers into the hexadecimal number 0x0000 0000 0dff b4df, equal to 234861791 in decimal. To calculate energy, multiply by the factor in the Values column (10^-5 = 0.00001), giving 2348.61791 kWh.

In other words, to obtain the final number:

0x2200: least significant part — leave the value unchanged: 0xb4df_hex = 46303_dec
0x2201: multiply the value by 2¹⁶ : 0x0dff_hex = 3583_dec, 3583 * 65536 = 234815488
0x2202: multiply the value by 2³² : 0 * 4294967296 = 0
0x2203: multiply the value by 2⁴⁸ : 0 * 281474976710656 = 0

Add the results: 46303 + 234815488 + 0 + 0 = 234861791. Multiply the sum by 0.00001 (move the decimal point five places left).

Modbus register table

Check the device firmware version: register tables differ between versions. This page describes firmware 2.x registers; firmware 1.0.1 register description.

Legend
RO / RW	Read only / Read/Write
Shown in bold	Default register value
xN	Multiply the register value by this factor to obtain the value in the stated units. If omitted, assume 1
⚡	This register supports data transmission using events in Fast Modbus.
FW	Firmware version that introduced the register. Blank means it has always been available.
Error:	Value on error
Grey cell	Service register: purpose, format and contents may change in later firmware

Device Modbus registers
Address		Register parameters			Description	Values	FW
Dec	Hex	Type	Access	Format	Description	Values	FW
5136	0x1410	Input ⚡	RO	u16 big endian	Urms L1 L1 phase voltage (RMS) ⚡ A Fast Modbus event is generated when the value changes by more than 2 V since the previous event	x0.01, V Error: 0xFFFF	2.1
5136	0x1410	Input ⚡	RO	u32 big endian	Urms L1 L1 phase voltage (RMS), two consecutive registers, higher resolution ⚡ A Fast Modbus event is generated when the value changes by more than 2 V since the previous event	x1.52588*10^-7, V Error: 0xFFFFFFFF	2.1
6144	0x1800	Input	RO	s32 little endian	Upeak L1 inst Current L1 voltage peak measured when the registers are polled Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.01, V Error: 0x7FFFFFFF	2.1
6160	0x1810	Input	RO	s32 little endian	Upeak L1 Aggregated L1 voltage peak over the peak aggregation period Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.01, V Error: 0x7FFFFFFF	2.1
5138	0x1412	Input ⚡	RO	u16 big endian	Urms L2 L2 phase voltage (RMS) ⚡ A Fast Modbus event is generated when the value changes by more than 2 V since the previous event	x0.01, V Error: 0xFFFF	2.1
5138	0x1412	Input ⚡	RO	u32 big endian	Urms L2 L2 phase voltage (RMS), two consecutive registers, higher resolution ⚡ A Fast Modbus event is generated when the value changes by more than 2 V since the previous event	x1.52588*10^-7, V Error: 0xFFFFFFFF	2.1
6146	0x1802	Input	RO	s32 little endian	Upeak L2 inst Current L2 voltage peak measured when the registers are polled Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.01, V Error: 0x7FFFFFFF	2.1
6162	0x1812	Input	RO	s32 little endian	Upeak L2 Aggregated L2 voltage peak over the peak aggregation period Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.01, V Error: 0x7FFFFFFF	2.1
5140	0x1414	Input ⚡	RO	u16 big endian	Urms L3 L3 phase voltage (RMS) ⚡ A Fast Modbus event is generated when the value changes by more than 2 V since the previous event	x0.01, V Error: 0xFFFF	2.1
5140	0x1414	Input ⚡	RO	u32 big endian	Urms L3 L3 phase voltage (RMS), two consecutive registers, higher resolution ⚡ A Fast Modbus event is generated when the value changes by more than 2 V since the previous event	x1.52588*10^-7, V Error: 0xFFFFFFFF	2.1
6148	0x1804	Input	RO	s32 little endian	Upeak L3 inst Current L3 voltage peak measured when the registers are polled Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.01, V Error: 0x7FFFFFFF	2.1
6164	0x1814	Input	RO	s32 little endian	Upeak L3 Aggregated L3 voltage peak over the peak aggregation period Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.01, V Error: 0x7FFFFFFF	2.1
5148	0x141C	Input	RO	u16 big endian	U L1-L2 Line-to-line voltage L1–L2	x0.01, V Error: 0xFFFF	2.5.0
5149	0x141D	Input	RO	u16 big endian	U L2-L3 Line-to-line voltage L2–L3	x0.01, V Error: 0xFFFF	2.5.0
5150	0x141E	Input	RO	u16 big endian	U L3-L1 Line-to-line voltage L3–L1	x0.01, V Error: 0xFFFF	2.5.0
4344	0x10F8	Input	RO	u16 big endian	Frequency Frequency	x0.01, Hz	2.1
4349	0x10FD	Input	RO	s16 big endian	Voltage angle L1 Voltage phase angle (always 0; L1 is the reference phase)	x0.1, ° Error: 0xFFF	2.1
4350	0x10FE	Input	RO	s16 big endian	Voltage angle L2 Voltage phase angle between L1 and L2	x0.1, ° Error: 0xFFF	2.1
4351	0x10FF	Input	RO	s16 big endian	Voltage angle L3 Voltage phase angle between L1 and L3	x0.1, ° Error: 0xFFF	2.1
5142	0x1416	Input	RO	u16 big endian	Irms L1 L1 phase current (RMS)	x0.016, A	2.1
5142	0x1416	Input	RO	u32 big endian	Irms L1 L1 phase current (RMS), two consecutive registers, higher resolution	x2.44141*10^-7, A	2.1
4361	0x1109	Input	RO	u16	Irms L1 x100 L1 phase current (RMS) x100	x0.01, A	2.9.0
6152	0x1808	Input	RO	s32 little endian	Ipeak L1 inst Current L1 current peak measured when the registers are polled Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.016, A	2.1
6168	0x1818	Input	RO	s32 little endian	Ipeak L1 Aggregated L1 current peak over the peak aggregation period Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.016, A	2.1
4866	0x1302	Input	RO	s32 big endian	P L1 L1 active power	x0.00512, W	2.1
4373	0x1115	Input	RO	s16	Px0.1 L1 L1 active power x0.1	x10, W	2.9.0
4874	0x130A	Input	RO	s32 big endian	Q L1 L1 reactive power	x0.00512, var	2.1
4882	0x1312	Input	RO	s32 big endian	S L1 L1 apparent power	x0.00512, VA	2.1
5506	0x1582	Input	RO	s32 big endian	N L1 L1 non-active power	x0.00512, var	2.1
4285	0x10BD	Input	RO	s16 big endian	PF L1 L1 power factor	x0.001	2.1
4612	0x1204	Input	RO	u64 little endian	AP energy L1 L1 forward active energy	x10^-5, kWh	2.1
6660	0x1A04	Input	RO	u64 big endian	AP energy L1 L1 forward active energy	x10^-5, kWh	2.9.0
4628	0x1214	Input	RO	u64 little endian	AN energy L1 L1 reverse active energy	x10^-5, kWh	2.1
6676	0x1A14	Input	RO	u64 big endian	AN energy L1 L1 reverse active energy	x10^-5, kWh	2.9.0
4644	0x1224	Input	RO	u64 little endian	RP energy L1 L1 forward reactive energy	x10^-5, kvarh	2.1
6692	0x1A24	Input	RO	u64 big endian	RP energy L1 L1 forward reactive energy	x10^-5, kvarh	2.9.0
4660	0x1234	Input	RO	u64 little endian	RN energy L1 L1 reverse reactive energy	x10^-5, kvarh	2.1
6708	0x1A34	Input	RO	u64 big endian	RN energy L1 L1 reverse reactive energy	x10^-5, kvarh	2.9.0
5380	0x1504	Input	RO	u64 little endian	NP energy L1 L1 forward non-active energy	x1.422222*10^-9, kvarh	2.1
5396	0x1514	Input	RO	u64 little endian	NN energy L1 L1 reverse non-active energy	x1.422222*10^-9, kvarh	2.1
5144	0x1418	Input	RO	u16 big endian	Irms L2 L2 phase current (RMS)	x0.016, A	2.1
5144	0x1418	Input	RO	u32 big endian	Irms L2 L2 phase current (RMS), two consecutive registers, higher resolution	x2.44141*10^-7, A	2.1
4362	0x110A	Input	RO	u16	Irms L2 x100 L2 phase current (RMS) x100	x0.01, A	2.9.0
6154	0x180A	Input	RO	s32 little endian	Ipeak L2 inst Current L2 current peak measured when the registers are polled Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.016, A	2.1
6170	0x181A	Input	RO	s32 little endian	Ipeak L2 Aggregated L2 current peak over the peak aggregation period Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.016, A	2.1
4868	0x1304	Input	RO	s32 big endian	P L2 L2 active power	x0.00512, W	2.1
4374	0x1116	Input	RO	s16	Px0.1 L2 L2 active power x0.1	x10, W	2.9.0
4876	0x130C	Input	RO	s32 big endian	Q L2 L2 reactive power	x0.00512, var	2.1
4884	0x1314	Input	RO	s32 big endian	S L2 L2 apparent power	x0.00512, VA	2.1
5508	0x1584	Input	RO	s32 big endian	N L2 L2 non-active power	x0.00512, var	2.1
4286	0x10BE	Input	RO	s16 big endian	PF L2 L2 power factor	x0.001	2.1
4616	0x1208	Input	RO	u64 little endian	AP energy L2 L2 forward active energy	x10^-5, kWh	2.1
6664	0x1A08	Input	RO	u64 big endian	AP energy L2 L2 forward active energy	x10^-5, kWh	2.9.0
4632	0x1218	Input	RO	u64 little endian	AN energy L2 L2 reverse active energy	x10^-5, kWh	2.1
6680	0x1A18	Input	RO	u64 big endian	AN energy L2 L2 reverse active energy	x10^-5, kWh	2.9.0
4648	0x1228	Input	RO	u64 little endian	RP energy L2 L2 forward reactive energy	x10^-5, kvarh	2.1
6696	0x1A28	Input	RO	u64 big endian	RP energy L2 L2 forward reactive energy	x10^-5, kvarh	2.9.0
4664	0x1238	Input	RO	u64 little endian	RN energy L2 L2 reverse reactive energy	x10^-5, kvarh	2.1
6712	0x1A38	Input	RO	u64 big endian	RN energy L2 L2 reverse reactive energy	x10^-5, kvarh	2.9.0
5384	0x1508	Input	RO	u64 little endian	NP energy L2 L2 forward non-active energy	x1.422222*10^-9, kvarh	2.1
5400	0x1518	Input	RO	u64 little endian	NN energy L2 L2 reverse non-active energy	x1.422222*10^-9, kvarh	2.1
5146	0x141A	Input	RO	u16 big endian	Irms L3 L3 phase current (RMS)	x0.016, A	2.1
5146	0x141A	Input	RO	u32 big endian	Irms L3 L3 phase current (RMS), two consecutive registers, higher resolution	x2.44141*10^-7, A	2.1
4363	0x110B	Input	RO	u16	Irms L3 x100 L3 phase current (RMS) x100	x0.01, A	2.9.0
6156	0x180C	Input	RO	s32 little endian	Ipeak L3 inst Current L3 current peak measured when the registers are polled Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.016, A	2.1
6172	0x181C	Input	RO	s32 little endian	Ipeak L3 Aggregated L3 current peak over the peak aggregation period Before firmware 2.8.0, the value is signed (it may be negative if the peak occurs in the negative half-cycle) From 2.8.0, the absolute value is used (always positive)	x0.016, A	2.1
4870	0x1306	Input	RO	s32 big endian	P L3 L3 active power	x0.00512, W	2.1
4375	0x1117	Input	RO	s16	Px0.1 L3 L3 active power x0.1	x10, W	2.9.0
4878	0x130E	Input	RO	s32 big endian	Q L3 L3 reactive power	x0.00512, var	2.1
4886	0x1316	Input	RO	s32 big endian	S L3 L3 apparent power	x0.00512, VA	2.1
5510	0x1586	Input	RO	s32 big endian	N L3 L3 non-active power	x0.00512, var	2.1
4287	0x10BF	Input	RO	s16 big endian	PF L3 L3 power factor	x0.001	2.1
4620	0x120C	Input	RO	u64 little endian	AP energy L3 L3 forward active energy	x10^-5, kWh	2.1
6668	0x1A0C	Input	RO	u64 big endian	AP energy L3 L3 forward active energy	x10^-5, kWh	2.9.0
4636	0x121C	Input	RO	u64 little endian	AN energy L3 L3 reverse active energy	x10^-5, kWh	2.1
6684	0x1A1C	Input	RO	u64 big endian	AN energy L3 L3 reverse active energy	x10^-5, kWh	2.9.0
4652	0x122C	Input	RO	u64 little endian	RP energy L3 L3 forward reactive energy	x10^-5, kvarh	2.1
6700	0x1A2C	Input	RO	u64 big endian	RP energy L3 L3 forward reactive energy	x10^-5, kvarh	2.9.0
4668	0x123C	Input	RO	u64 little endian	RN energy L3 L3 reverse reactive energy	x10^-5, kvarh	2.1
6716	0x1A3C	Input	RO	u64 big endian	RN energy L3 L3 reverse reactive energy	x10^-5, kvarh	2.9.0
5388	0x150C	Input	RO	u64 little endian	NP energy L3 L3 forward non-active energy	x1.422222*10^-9, kvarh	2.1
5404	0x151C	Input	RO	u64 little endian	NN energy L3 L3 reverse non-active energy	x1.422222*10^-9, kvarh	2.1
4864	0x1300	Input	RO	s32 big endian	Total P Total active power	x0.00512, W	2.1
4372	0x1114	Input	RO	s16	Total Px0.1 Total active power x0.1	x10, W	2.9.0
4872	0x1308	Input	RO	s32 big endian	Total Q Total reactive power	x0.00512, var	2.1
4880	0x1310	Input	RO	s32 big endian	Total S Total apparent power	x0.00512, VA	2.1
5504	0x1580	Input	RO	s32 big endian	Total N Total non-active power	x0.00512, var	2.1
4284	0x10BC	Input	RO	s16 big endian	Total PF Total power factor	x0.001	2.1
4608	0x1200	Input	RO	u64 little endian	Total AP energy Total forward active energy	x10^-5, kWh	2.1
6656	0x1A00	Input	RO	u64 big endian	Total AP energy Total forward active energy	x10^-5, kWh	2.9.0
4624	0x1210	Input	RO	u64 little endian	Total AN energy Total reverse active energy	x10^-5, kWh	2.1
6672	0x1A10	Input	RO	u64 big endian	Total AN energy Total reverse active energy	x10^-5, kWh	2.9.0
4640	0x1220	Input	RO	u64 little endian	Total RP energy Total forward reactive energy	x10^-5, kvarh	2.1
6688	0x1A20	Input	RO	u64 big endian	Total RP energy Total forward reactive energy	x10^-5, kvarh	2.9.0
4656	0x1230	Input	RO	u64 little endian	Total RN energy Total reverse reactive energy	x10^-5, kvarh	2.1
6704	0x1A30	Input	RO	u64 big endian	Total RN energy Total reverse reactive energy	x10^-5, kvarh	2.9.0
5376	0x1500	Input	RO	u64 little endian	Total NP energy Total forward non-active energy	x1.422222*10^-9, kvarh	2.1
5392	0x1510	Input	RO	u64 little endian	Total NN energy Total reverse non-active energy	x1.422222*10^-9, kvarh	2.1
4345	0x10F9	Input	RO	s16 big endian	Phase angle L1 Voltage-to-current phase angle for L1	x0.1, °	2.1
4346	0x10FA	Input	RO	s16 big endian	Phase angle L2 Voltage-to-current phase angle for L2	x0.1, °	2.1
4347	0x10FB	Input	RO	s16 big endian	Phase angle L3 Voltage-to-current phase angle for L3	x0.1, °	2.1