Modbus/TCP - EV line

This page describes the Modbus register table exposed for Smappee EV charging stations.

See the Modbus TCP/IP main page for connection, configuration, supported function codes and read/write semantics.

Connector identification

The list of connectors is configured in the “Configuration” view of the ModbusTCP app. Each connector is exposed under the slave id corresponding to its position in the list (the first connector becomes slave id 1, the second slave id 2, …).

Example: with the configuration above, connector 6021001516-1 is available under slave id 1 and connector 6021001516-2 under slave id 2.

General registers

Description	Start address	# of 16-bit registers	R/W	Data type	Unit	Notes

Description	Start address	# of 16-bit registers	R/W	Data type	Unit	Notes
Manufacturer	1	5	R	ASCII	-	e.g. `"Smappee NV"`
Station article number	10	-	R	ASCII	-	e.g. `"EVUE-240S-C3-B"`
Station serial number	20	-	R	ASCII	-	e.g. `62010000050`
AC or DC charging station	30	-	R	UNSIGNED16	-	`0` = AC, `1` = DC
ID of this connector	31	1	R	UNSIGNED16	-	EV Base / EV Ultra Dual have 2 connectors
Maximum current of this connector (installation)	32	2	R	FLOAT	A	AC charging station
Maximum power of this connector (installation)	34	2	R	FLOAT	W	DC charging station

Energy measurements

Description	Start address	# of 16-bit registers	R/W	Data type	Unit

Description	Start address	# of 16-bit registers	R/W	Data type	Unit
Active power L1	101	2	R	FLOAT	W
Active power L2	103	2	R	FLOAT	W
Active power L3	105	2	R	FLOAT	W
Total active power	107	2	R	FLOAT	W
Current L1	109	2	R	FLOAT	A
Current L2	111	2	R	FLOAT	A
Current L3	113	2	R	FLOAT	A
Total current	115	2	R	FLOAT	A
Active energy L1	117	2	R	FLOAT	Wh
Active energy L2	119	2	R	FLOAT	Wh
Active energy L3	121	2	R	FLOAT	Wh
Total active energy	123	2	R	FLOAT	Wh

Status and transaction registers

Description	Start address	# of 16-bit registers	R/W	Data type	Unit	Notes

Description	Start address	# of 16-bit registers	R/W	Data type	Unit	Notes
EVSE state	251	1	R	UNSIGNED16	-	`0`=A0, `1`=A1, `2`=A2, `3`=B0, `4`=B1, `5`=B2, `6`=B3, `7`=B4, `8`=B5, `9`=B6, `10`=B8, `11`=B9, `12`=B12, `13`=C1, `14`=C2, `15`=C6, `16`=C7, `17`=C8, `18`=C9, `19`=C12, `20`=D1, `21`=D2, `22`=E, `23`=F
Charging state	252	1	R	UNSIGNED16	-	`0`=AVAILABLE, `1`=CABLE_CONNECTED, `2`=CHARGING, `3`=PAUSED, `4`=CHARGING_ENDED, `5`=ERROR, `6`=BOOTING, `7`=UNAVAILABLE, `99`=UNDEFINED
Pause session	255	1	R/W	UNSIGNED16	-	`0` = not paused, `1` = paused. AC charging station only.
Stop session	256	1	R/W	UNSIGNED16	-	`0` = do not stop, `1` = stop session. DC charging station only.
Current setpoint	257	2	R/W	FLOAT	A	AC charging station
Power setpoint	259	1	R/W	UNSIGNED16	kW	DC charging station
State of charge	260	1	R	UNSIGNED16	%	DC charging station
Number of phases used	261	1	R	UNSIGNED16	-	AC charging station with phase switching enabled. One of `1`, `3`.

Session registers

Description	Start address	# of 16-bit registers	R/W	Data type	Unit	Notes

Description	Start address	# of 16-bit registers	R/W	Data type	Unit	Notes
Current session start time	501	2	R	UNSIGNED32	s	Seconds since epoch
Current session duration	503	2	R	UNSIGNED32	s	e.g. `3450`
Current session total energy	505	2	R	UNSIGNED32	Wh	e.g. `25470`
Previous session start time	523	2	R	UNSIGNED32	s	Seconds since epoch
Previous session stop time	525	2	R	UNSIGNED32	s	Seconds since epoch
Previous session duration	527	2	R	UNSIGNED32	s	e.g. `2500`
Previous session total energy	529	2	R	UNSIGNED32	Wh	e.g. `35470`