EM330

Firmware v2 register overview for the EM330 mapping.

Mapping behaviour

• Device Manager mapping value: 4

• Profile: EM330

• Read function codes: FC03 and FC04

• Register widths: mixed 16-bit and 32-bit

• 32-bit word order: low word first (LSW-MSW)

• Unmapped register handling: Zero-filled

Device ID, baud rate and serial format are global firmware v2 settings. They are not changed when this mapping is selected.

Register overview

Address (decimal / hex)	Words	Type	Source or fixed value	Conversion	Missing
0 / 0x0000	2	uint32	voltage_l1_v	scale 10	source_default
2 / 0x0002	2	uint32	voltage_l2_v	scale 10	source_default
4 / 0x0004	2	uint32	voltage_l3_v	scale 10	source_default
6 / 0x0006	2	uint32	line_voltage_l12_v	scale 10	source_default
8 / 0x0008	2	uint32	line_voltage_l23_v	scale 10	source_default
10 / 0x000A	2	uint32	line_voltage_l31_v	scale 10	source_default
12 / 0x000C	2	uint32	derived_current_l1_a	scale 1000	source_default
14 / 0x000E	2	uint32	current_l2_a	scale 1000	source_default
16 / 0x0010	2	uint32	derived_current_l3_a	scale 1000	source_default
18 / 0x0012	2	int32	net_power_l1_kw	scale 10000	source_default
20 / 0x0014	2	int32	net_power_l2_kw	scale 10000	source_default
22 / 0x0016	2	int32	net_power_l3_kw	scale 10000	source_default
24 / 0x0018	2	int32	net_power_l1_kw	scale 10000	source_default
26 / 0x001A	2	int32	net_power_l2_kw	scale 10000	source_default
28 / 0x001C	2	int32	net_power_l3_kw	scale 10000	source_default
30 / 0x001E	2	int32	constant 0	—	source_default
32 / 0x0020	2	int32	constant 0	—	source_default
34 / 0x0022	2	int32	constant 0	—	source_default
36 / 0x0024	2	int32	line_voltage_avg_tenths_legacy	—	source_default
38 / 0x0026	2	int32	line_voltage_avg_tenths_legacy	—	source_default
40 / 0x0028	2	int32	net_power_total_kw	scale 10000	source_default
42 / 0x002A	2	int32	net_power_total_kw	scale 10000	source_default
44 / 0x002C	2	int32	constant 0	—	source_default
46 / 0x002E	1	int16	direction_l1	scale 1000	source_default
47 / 0x002F	1	int16	direction_l2	scale 1000	source_default
48 / 0x0030	1	int16	direction_l3	scale 1000	source_default
49 / 0x0031	1	int16	direction_total	scale 1000	source_default
50 / 0x0032	1	int16	constant 0	—	source_default
51 / 0x0033	1	int16	constant 500	—	source_default
52 / 0x0034	2	uint32	energy_delivered_total_kwh	scale 10	source_default
54 / 0x0036	2	uint32	constant 0	—	source_default
80 / 0x0050	2	uint32	energy_returned_total_kwh	scale 10	source_default
82 / 0x0052	2	uint32	constant 0	—	source_default
92 / 0x005C	2	uint32	uptime_seconds	—	source_default
406 / 0x0196	2	uint32	pre40	—	source_default
408 / 0x0198	2	uint32	firmware_version_packed	—	source_default
410 / 0x019A	2	uint32	p1_device_magic	—	source_default
8192 / 0x2000	1	int16	dev_id	—	source_default
8193 / 0x2001	1	int16	baudrate	baud_index_em330	source_default
8194 / 0x2002	1	int16	serial_config_offset	parity_index_none_or_even	source_default
8195 / 0x2003	1	int16	serial_config_offset	stop_bits_count	source_default
8196 / 0x2004	1	int16	constant 50	—	source_default

Reading the table

• Words is the number of consecutive 16-bit Modbus registers occupied by the entry.

• Source names correspond directly to the firmware v2 recipe source.

• Conversion records the exact scale, transform or direction handling configured by the recipe.

• This page is generated from mb_recipe.h and modbus_profiles.h for firmware 2.3.0.