Wallbox - P1MB

Firmware v2 register overview for the Wallbox - P1MB mapping.

Mapping behaviour

• Device Manager mapping value: 12

• Profile: XEMEX

• 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.

Wallbox communication settings and D1MC wiring

Use the following settings for the Wallbox / Xemex P1MB connection. This combination was confirmed working with the Smartstuff D1MC and the Wallbox - P1MB profile on 10 October 2026.

Setting	Value
Mapping	Wallbox - P1MB (12, profile XEMEX)
Modbus device ID	1
Baud rate	9600
Serial format	8N1 — 8 data bits, no parity, 1 stop bit

These are the settings to use for this Wallbox/P1MB integration. Configure them separately in the Device Manager and save them; selecting the mapping does not apply them automatically or change the adapter's factory defaults.

Wallbox RS485 terminal	Smartstuff D1MC terminal
D-	B- (B)
D+	A+ (A)

Register overview

Address (decimal / hex)	Words	Type	Source or fixed value	Conversion	Missing
0 / 0x0000	8	text	constant "WBXCSB0000013123"	—	zero
8 / 0x0008	3	text	constant "XEMEX"	—	zero
11 / 0x000B	8	text	constant "XM_P1MB_V03"	—	zero
19 / 0x0013	1	uint16	dev_id	—	zero
20 / 0x0014	48	text	header_text	—	zero
68 / 0x0044	2	text	p1_version_text	—	zero
70 / 0x0046	7	text	timestamp_text	—	zero
78 / 0x004E	48	text	equipment_id_text	—	zero
126 / 0x007E	2	uint32	energy_delivered_tariff1_kwh	scale 1000	zero
128 / 0x0080	2	uint32	energy_delivered_tariff2_kwh	scale 1000	zero
130 / 0x0082	2	uint32	energy_returned_tariff1_kwh	scale 1000	zero
132 / 0x0084	2	uint32	energy_returned_tariff2_kwh	scale 1000	zero
134 / 0x0086	2	text	tariff_text	—	zero
136 / 0x0088	2	uint32	power_delivered_kw	scale 1000	zero
138 / 0x008A	2	uint32	power_returned_kw	scale 1000	zero
761 / 0x02F9	2	uint32	voltage_l1_v	scale 10	zero
763 / 0x02FB	2	uint32	voltage_l2_v	scale 10	zero
765 / 0x02FD	2	uint32	voltage_l3_v	scale 10	zero
767 / 0x02FF	1	uint16	current_l1_a	—	zero
769 / 0x0301	1	uint16	current_l2_a	—	zero
771 / 0x0303	1	uint16	current_l3_a	—	zero
773 / 0x0305	2	uint32	power_delivered_l1_kw	scale 1000	zero
775 / 0x0307	2	uint32	power_delivered_l2_kw	scale 1000	zero
777 / 0x0309	2	uint32	power_delivered_l3_kw	scale 1000	zero
779 / 0x030B	2	uint32	power_returned_l1_kw	scale 1000	zero
781 / 0x030D	2	uint32	power_returned_l2_kw	scale 1000	zero
783 / 0x030F	2	uint32	power_returned_l3_kw	scale 1000	zero
785 / 0x0311	1	uint16	mbus_device_type_ch1	—	zero
786 / 0x0312	1	uint16	mbus_device_type_ch2	—	zero
787 / 0x0313	1	uint16	mbus_device_type_ch3	—	zero
788 / 0x0314	1	uint16	mbus_device_type_ch4	—	zero
789 / 0x0315	48	text	mbus_equipment_id_ch1_text	—	zero
837 / 0x0345	48	text	mbus_equipment_id_ch2_text	—	zero
885 / 0x0375	48	text	mbus_equipment_id_ch3_text	—	zero
933 / 0x03A5	48	text	mbus_equipment_id_ch4_text	—	zero
981 / 0x03D5	7	text	mbus_timestamp_ch1_text	—	zero
988 / 0x03DC	2	uint32	mbus_delivered_ch1_m3	scale 1000	zero
990 / 0x03DE	7	text	mbus_timestamp_ch2_text	—	zero
997 / 0x03E5	2	uint32	mbus_delivered_ch2_m3	scale 1000	zero
999 / 0x03E7	7	text	mbus_timestamp_ch3_text	—	zero
1006 / 0x03EE	2	uint32	mbus_delivered_ch3_m3	scale 1000	zero
1008 / 0x03F0	7	text	mbus_timestamp_ch4_text	—	zero
1015 / 0x03F7	2	uint32	mbus_delivered_ch4_m3	scale 1000	zero
1017 / 0x03F9	2	uint32	energy_delivered_total_kwh	scale 1000	zero
1019 / 0x03FB	2	uint32	energy_returned_total_kwh	scale 1000	zero
1021 / 0x03FD	4	text	p1_version_be_text	—	zero

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.