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KNX Gateways for Inverters / INV-KNX SMA User Manual

Communication object reference

The full communication-object reference for INV-KNX SMA, including datatypes and unavailable values.

elausys · 16 September 2026
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8.1 System AC and PV values

All listed objects use flags C R - T -: Communication, Read and Transmit enabled; Write and Update disabled. The function is Actual value except GO 1 (Status code) and GO 2 (Text String).

GOObject nameSizeDPT and typeMeaning and availability
1Module status1 byte20.011
DPT_ErrorClass_System
0 = normal operation. Other values are error codes.
2Firmware version14 bytes16.000
Character string
Returns the firmware version when read.
3AC Current4 bytes14.019
Electric current (A)
AC Total Current value
4AC Current A4 bytes14.019
Electric current (A)
AC Current phase A
5AC Current B4 bytes14.019
Electric current (A)
AC Current phase B
6AC Current C4 bytes14.019
Electric current (A)
AC Current phase C
7AC Voltage4 bytes14.027
Electric potential (V)
Not used with either SMA model.
8AC Voltage AB4 bytes14.027
Electric potential (V)
AC Voltage phase AB
9AC Voltage BC4 bytes14.027
Electric potential (V)
AC Voltage phase BC
10AC Voltage CA4 bytes14.027
Electric potential (V)
AC Voltage phase CA
11AC Voltage AN4 bytes14.027
Electric potential (V)
AC Voltage phase AN
12AC Voltage BN4 bytes14.027
Electric potential (V)
AC Voltage phase BN
13AC Voltage CN4 bytes14.027
Electric potential (V)
AC Voltage phase CN
14DC Current4 bytes14.019
Electric current (A)
Not used with either SMA model.
15DC Voltage4 bytes14.027
Electric potential (V)
Not used with either SMA model.
16PV1 Voltage4 bytes14.027
Electric potential (V)
PV1 Voltage
17PV1 Current4 bytes14.019
Electric current (A)
PV1 Current
18PV2 Voltage4 bytes14.027
Electric potential (V)
PV2 Voltage
19PV2 Current4 bytes14.019
Electric current (A)
PV2 Current

AC phase values depend on the installed AC network. PV1 and PV2 correspond to the two supported PV circuits.

8.2 Power energy and diagnostics

All listed objects use flags C R - T -: Communication, Read and Transmit enabled; Write and Update disabled. The function is Actual value except GO 1 (Status code) and GO 2 (Text String).

GOObject nameSizeDPT and typeMeaning and availability
20PV3 Voltage4 bytes14.027
Electric potential (V)
Not used with either SMA model.
21PV3 Current4 bytes14.019
Electric current (A)
Not used with either SMA model.
22PV4 Voltage4 bytes14.027
Electric potential (V)
Not used with either SMA model.
23PV4 Current4 bytes14.019
Electric current (A)
Not used with either SMA model.
24AC Power4 bytes14.056
Power (W)
AC Power
25DC Power4 bytes14.056
Power (W)
Not used with either SMA model.
26AC Frequency4 bytes14.033
Frequency (Hz)
AC Frequency
27AC VA4 bytes14.056
Power (W)
AC Apparent power
28AC VAR4 bytes14.056
Power (W)
AC Reactive power (model 23 only)
29AC PF4 bytes14.057
Power factor (cos phi)
Power factor
30AC Energy4 bytes13.013
Active energy (kWh)
Total AC Energy
31Efficiency2 bytes8.010
Percentage (%)
Not used with either SMA model.
32Insulation4 bytes14.060
Resistance (Ohm)
Insulation resistance.
33Temperature2 bytes9.001
Temperature (°C)
Cabinet temperature
40Daily Energy Yield4 bytes13.013
Energy (kWh)
Daily energy yield (model 23 only)

8.3 Battery and grid values

All listed objects use flags C R - T -: Communication, Read and Transmit enabled; Write and Update disabled. The function is Actual value except GO 1 (Status code) and GO 2 (Text String).

GOObject nameSizeDPT and typeMeaning and availability
41Battery 1 Running Status2 bytes-
-
0 Off; 6 Discharging; 7 Charging; 8 Float charge.
42Battery 1 power4 bytes14.056
Power (W)
Battery power, charging positive / discharging negative (model 23 only)
43Battery 1 SOC1 byte5.001
Percentage (%)
Battery state of charge
44Battery 1 current day charge4 bytes13.013
Energy (kWh)
Not used with either SMA model.
45Battery 1 current day discharge4 bytes13.013
Energy (kWh)
Not used with either SMA model.
46Battery 1 total charge4 bytes13.013
Energy (kWh)
Battery lifetime energy charged (model 23 only)
47Battery 1 total discharge4 bytes13.013
Energy (kWh)
Battery lifetime energy discharged (model 23 only)
48Battery 2 Running Status2 bytes-
-
Not used with either SMA model.
49Battery 2 power4 bytes14.056
Power (W)
Not used with either SMA model.
50Battery 2 SOC1 byte5.001
Percentage (%)
Not used with either SMA model.
51Battery 2 current day charge4 bytes13.013
Energy (kWh)
Not used with either SMA model.
52Battery 2 current day discharge4 bytes13.013
Energy (kWh)
Not used with either SMA model.
53Battery 2 total charge4 bytes13.013
Energy (kWh)
Not used with either SMA model.
54Battery 2 total discharge4 bytes13.013
Energy (kWh)
Not used with either SMA model.
55Powermeter4 bytes14.056
Power (W)
Grid power, import positive / export negative (model 23 only)

Battery 1 must be enabled in ETS for model 23 battery reads. Powermeter must be enabled for GO 55. Battery 2 is not supported by this SMA application. A dash in the DPT column means no Type ID or Type Name is specified in the source.

Manual navigation

All chapters of the INV-KNX SMA user manual

Frequently Asked Questions

Can these measurement objects be written from KNX?

The listed objects use flags C R - T -: Communication, Read and Transmit are enabled; Write and Update are disabled.

What does NOT USED mean in the object reference?

The measurement is unavailable for this application. Its presence in the generic ETS application does not mean the inverter supplies it.

What does a dash in the datatype column mean?

No standard Type ID or Type Name is specified for that entry in this application reference. Use the object size and documented meaning alongside the ETS application.

Keep exploring

Find the other guides for this product in the documentation.

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