ABB B21

This mapping emulates the ABB B21 meter.

Defaults

• Modbus device id: 2

• RS485: 9600 8N1

• Function codes: FC03

• Data format: uint32 and signed int32

• Unavailable values: 0

Measurement registers

Register	Description	Type	Unit / encoding
0x5B00	voltage_l1	uint32	V x10
0x5B02	voltage_l2	uint32	V x10
0x5B04	voltage_l3	uint32	V x10
0x5B0C	current_l1	uint32	A x100
0x5B0E	current_l2	uint32	A x100
0x5B10	current_l3	uint32	A x100
0x5B14	active_power_total	int32	W x100
0x5B16	active_power_l1	int32	W x100
0x5B18	active_power_l2	int32	W x100
0x5B1A	active_power_l3	int32	W x100

Device info

Register	Description	Value
400	device id	current DevID
402	serial config	encoded serial mode
404	baudrate	actual baudrate
406	pre4 meter flag	0 or 1
408	firmware version	packed MMmmpp
410	dongle name	packed P1M3