DTSU666

Firmware v2 register overview for the DTSU666 mapping.

Mapping behaviour

• Device Manager mapping value: 2

• Profile: DTSU666

• Read function codes: FC03 and FC04

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

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

• 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	1	int16	constant 204	—	source_default
1 / 0x0001	1	int16	constant 701	—	source_default
2 / 0x0002	1	int16	constant 0	—	source_default
3 / 0x0003	1	int16	constant 0	—	source_default
5 / 0x0005	1	int16	constant 0	—	source_default
6 / 0x0006	1	int16	constant 1	—	source_default
7 / 0x0007	1	int16	constant 10	—	source_default
10 / 0x000A	1	int16	constant 0	—	source_default
12 / 0x000C	1	int16	constant 0	—	source_default
44 / 0x002C	1	int16	constant 3	—	source_default
45 / 0x002D	1	int16	baudrate	baud_index_dtsu	source_default
46 / 0x002E	1	int16	dev_id	—	source_default
8192 / 0x2000	2	float32	line_voltage_l12_v	scale 10	source_default
8194 / 0x2002	2	float32	line_voltage_l23_v	scale 10	source_default
8196 / 0x2004	2	float32	line_voltage_l31_v	scale 10	source_default
8198 / 0x2006	2	float32	voltage_l1_v	scale 10	source_default
8200 / 0x2008	2	float32	voltage_l2_v	scale 10	source_default
8202 / 0x200A	2	float32	voltage_l3_v	scale 10	source_default
8204 / 0x200C	2	float32	derived_current_l1_a	scale 1000	source_default
8206 / 0x200E	2	float32	derived_current_l2_a	scale 1000	source_default
8208 / 0x2010	2	float32	derived_current_l3_a	scale 1000	source_default
8210 / 0x2012	2	float32	net_power_total_int_x10_legacy	—	source_default
8212 / 0x2014	2	float32	net_power_l1_int_x10_legacy	—	source_default
8214 / 0x2016	2	float32	net_power_l2_int_x10_legacy	—	source_default
8216 / 0x2018	2	float32	net_power_l3_int_x10_legacy	—	source_default
8218 / 0x201A	2	float32	net_power_total_int_x10_legacy	—	source_default
8220 / 0x201C	2	float32	net_power_l1_int_x10_legacy	—	source_default
8222 / 0x201E	2	float32	net_power_l2_int_x10_legacy	—	source_default
8224 / 0x2020	2	float32	net_power_l3_int_x10_legacy	—	source_default
8234 / 0x202A	2	float32	direction_total	scale 1000	source_default
8236 / 0x202C	2	float32	direction_l1	scale 1000	source_default
8238 / 0x202E	2	float32	direction_l2_or_zero	scale 1000	source_default
8240 / 0x2030	2	float32	direction_l3_or_zero	scale 1000	source_default
8260 / 0x2044	2	float32	constant 5000.0f	—	—
4126 / 0x101E	2	float32	energy_delivered_total_kwh	—	source_default
4136 / 0x1028	2	float32	energy_returned_total_kwh	—	source_default
16390 / 0x4006	2	float32	pre40	—	source_default
16392 / 0x4008	2	uint32	firmware_version_packed	—	source_default
16400 / 0x4010	2	uint32	p1_device_magic	—	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.