Default float mapping

This is the default FLOAT emulation mapping. It exposes a compact float-based layout.

Defaults

• Modbus device id: 1

• RS485: 9600 8E1

• Function codes: FC03

• Data format: mostly float32, plus a few uint32 status registers

• Address range: 0-52

Registers

Register	Description	Type	Unit / encoding
0	sample timestamp	uint32	epoch UTC
2	energy_delivered_tariff1	float32	kWh
4	energy_delivered_tariff2	float32	kWh
6	energy_returned_tariff1	float32	kWh
8	energy_returned_tariff2	float32	kWh
10	energy_delivered_total	float32	kWh
12	energy_returned_total	float32	kWh
14	power_delivered	float32	kW
16	power_returned	float32	kW
18	net_power_total	float32	W
20	voltage_l1	float32	V
22	voltage_l2	float32	V
24	voltage_l3	float32	V
26	current_l1	float32	A, negative when returning on L1
28	current_l2	float32	A, negative when returning on L2
30	current_l3	float32	A, negative when returning on L3
32	gas timestamp	uint32	epoch UTC
34	gas delivered	float32	m3
36	tariff	uint32	numeric tariff id
38	peak power last quarter	float32	meter value
40	net_power_l1	float32	W
42	net_power_l2	float32	W
44	net_power_l3	float32	W
46	water delivered	float32	m3
48	identifier	uint32	fixed P1DO = 0x5031444F
50	firmware version	uint32	packed MMmmpp
52	online flag	uint32	1 = online, 0 = offline

Notes

• Missing float values are returned as NaN.

• Missing integer values use 0xFFFFFFFF.

• This mapping is useful when the Modbus client expects engineering values directly as floats.