# OBIS codes¶

Here you can find the information what the OBIS code is and how to understand the values read from the energy meter.

## OBIS code¶

**OBIS code** is a numerical code which represents the physical quantity measured by the meter. Let's look at the example (it may be shown in simpler form on your energy meter display).

```
1.8.0(158233.46*kWh)
```

It contains 3 elements: OBIS code `1.8.0`

, counter value `158233.46`

and the unit `kWh`

separated with specific characters. The OBIS codes corresponds to the type of measurement. For example, `1.8.0`

corresponds to positive active energy consumed from the grid. What does that mean? This is the amount of active energy you consumed since your meter was installed (or its registers were reset).

Why `1.8.0`

? It has been defined in the `IEC62056-21`

standard (as amended), in which the exact representation of OBIS codes must be represented by the most energy (and other media) meters available in EU.

## OBIS registers¶

According to the standard, not only can the classic measurement values (power, energy, voltage) be exposed, but also the other data (e.g. meter operating status). However, let us pay special attention to the classical measurement values.

In short, *active energy* is the energy actually converted into work or heat of an electrical device. *Reactive energy* informs about energy stored in an electrical device necessary for its proper operation but not converted into work and affecting energy losses on the operator's side. Energy is *positive* when you consume it from the operator (of the grid), and *negative* when you feed it into the grid (e.g. after production with PV panels). The *character of the energy* determines whether the reactive energy is more capacitive (a magnetic field is generated), more inductive (an electric field is generated), resistive (none of these fields is generated) or mixed (a combination of these characters).

More information: Physics.

### Summary codes¶

OBIS code | represents how much |
---|---|

1.8.0 / 2.8.0 | active energy has been consumed / returned to the grid |

3.8.0 / 4.8.0 | reactive energy has been received from / returned to the grid |

5.8.0 / 7.8.0 | inductive reactive energy has been received from / returned to the grid |

6.8.0 / 8.8.0 | capacitive reactive energy has been returned / received from the grid |

We need two OBIS codes to represent the produced and consumed energy, because a meter counter counts forward only.

### Tariff codes¶

OBIS code | represents how much |
---|---|

1.8.1 - 1.8.4 | active energy has been consumed in particular tariff zones |

2.8.1 - 2.8.4 | active energy has been returned to the grid in particular tariff zones |

## Index¶

### Active energy¶

OBIS code | description | unit | alias |
---|---|---|---|

1.8.0 | Positive active energy, total | kWh | A+ |

1.8.1 | Positive active energy in tariff I | kWh | A+ (T1) |

1.8.2 | Positive active energy in tariff II | kWh | A+ (T2) |

1.8.3 | Positive active energy in tariff III | kWh | A+ (T3) |

1.8.4 | Positive active energy in tariff IV | kWh | A+ (T4) |

2.8.0 | Negative active energy, total | kWh | A- |

2.8.1 | Negative active energy in tariff I | kWh | A- (T1) |

2.8.2 | Negative active energy in tariff II | kWh | A- (T2) |

2.8.3 | Negative active energy in tariff III | kWh | A- (T3) |

2.8.4 | Negative active energy in tariff IV | kWh | A- (T4) |

15.8.0 / F.8.0 | Absolute active energy, total | kWh | |A| |

15.8.1 / F.8.1 | Absolute active energy, total in tariff I | kWh | |A| (T1) |

15.8.2 / F.8.2 | Absolute active energy, total in tariff II | kWh | |A| (T2) |

15.8.3 / F.8.3 | Absolute active energy, total in tariff III | kWh | |A| (T3) |

15.8.4 / F.8.4 | Absolute active energy, total in tariff IV | kWh | |A| (T4) |

21.8.0 | Positive active energy in phase I, total | kWh | A+ (L1) |

41.8.0 | Positive active energy in phase II, total | kWh | A+ (L2) |

61.8.0 | Positive active energy in phase III, total | kWh | A+ (L3) |

22.8.0 | Negative active energy in phase I, total | kWh | A- (L1) |

42.8.0 | Negative active energy in phase II, total | kWh | A- (L2) |

62.8.0 | Negative active energy in phase III, total | kWh | A- (L3) |

35.8.0 | Absolute active energy in phase I, total | kWh | |A| (L1) |

55.8.0 | Absolute active energy in phase II, total | kWh | |A| (L2) |

75.8.0 | Absolute active energy in phase III, total | kWh | |A| (L3) |

More information: Active energy, Tariff zone, Phase.

### Reactive energy¶

OBIS code | description | unit | alias |
---|---|---|---|

3.8.0 | Positive reactive energy, total | kvarh | Q+ |

3.8.1 | Positive reactive energy in tariff I | kvarh | Q+ (T1) |

3.8.2 | Positive reactive energy in tariff II | kvarh | Q+ (T2) |

3.8.3 | Positive reactive energy in tariff III | kvarh | Q+ (T3) |

3.8.4 | Positive reactive energy in tariff IV | kvarh | Q+ (T4) |

4.8.0 | Negative reactive energy, total | kvarh | Q- |

4.8.1 | Negative reactive energy in tariff I | kvarh | Q- (T1) |

4.8.2 | Negative reactive energy in tariff II | kvarh | Q- (T2) |

4.8.3 | Negative reactive energy in tariff III | kvarh | Q- (T3) |

4.8.4 | Negative reactive energy in tariff IV | kvarh | Q- (T4) |

5.8.0 | Reactive energy in I quadrant, total | kvarh | QL+ |

5.8.1 | Reactive energy in I quadrant in tariff I | kvarh | QL+ (T1) |

5.8.2 | Reactive energy in I quadrant in tariff II | kvarh | QL+ (T2) |

5.8.3 | Reactive energy in I quadrant in tariff III | kvarh | QL+ (T3) |

5.8.4 | Reactive energy in I quadrant in tariff IV | kvarh | QL+ (T4) |

6.8.0 | Reactive energy in II quadrant, total | kvarh | QC+ |

6.8.1 | Reactive energy in II quadrant in tariff I | kvarh | QC+ (T1) |

6.8.2 | Reactive energy in II quadrant in tariff II | kvarh | QC+ (T2) |

6.8.3 | Reactive energy in II quadrant in tariff III | kvarh | QC+ (T3) |

6.8.4 | Reactive energy in II quadrant in tariff IV | kvarh | QC+ (T4) |

7.8.0 | Reactive energy in III quadrant, total | kvarh | QL- |

7.8.1 | Reactive energy in III quadrant in tariff I | kvarh | QL- (T1) |

7.8.2 | Reactive energy in III quadrant in tariff II | kvarh | QL- (T2) |

7.8.3 | Reactive energy in III quadrant in tariff III | kvarh | QL- (T3) |

7.8.4 | Reactive energy in III quadrant in tariff IV | kvarh | QL- (T4) |

8.8.0 | Reactive energy in IV quadrant, total | kvarh | QC- |

8.8.1 | Reactive energy in IV quadrant in tariff I | kvarh | QC- (T1) |

8.8.2 | Reactive energy in IV quadrant in tariff II | kvarh | QC- (T2) |

8.8.3 | Reactive energy in IV quadrant in tariff III | kvarh | QC- (T3) |

8.8.4 | Reactive energy in IV quadrant in tariff IV | kvarh | QC- (T4) |

More information: Reactive energy, Tariff zone, Quadrant.

### Apparent energy¶

OBIS code | description | unit | alias |
---|---|---|---|

9.8.0 | Apparent energy, total | kVAh | S+ |

9.8.1 | Apparent energy in tariff I | kVAh | S+ (T1) |

9.8.2 | Apparent energy in tariff II | kVAh | S+ (T2) |

9.8.3 | Apparent energy in tariff III | kVAh | S+ (T3) |

9.8.4 | Apparent energy in tariff IV | kVAh | S+ (T4) |

### Power demand¶

OBIS code | description | unit | alias |
---|---|---|---|

1.6.0 | Positive active maximum demand, total | kW | |

1.6.1 | Positive active maximum demand in tariff I | kW | |

1.6.2 | Positive active maximum demand in tariff II | kW | |

1.6.3 | Positive active maximum demand in tariff III | kW | |

1.6.4 | Positive active maximum demand in tariff IV | kW | |

2.6.0 | Negative active maximum demand, total | kW | |

2.6.1 | Negative active maximum demand in tariff I | kW | |

2.6.2 | Negative active maximum demand in tariff II | kW | |

2.6.3 | Negative active maximum demand in tariff III | kW | |

2.6.4 | Negative active maximum demand in tariff IV | kW | |

15.6.0 | Absolute active maximum demand, total | kW | |

15.6.1 | Absolute active maximum demand in tariff I | kW | |

15.6.2 | Absolute active maximum demand in tariff II | kW | |

15.6.3 | Absolute active maximum demand in tariff III | kW | |

15.6.4 | Absolute active maximum demand in tariff IV | kW | |

3.6.0 | Positive reactive maximum demand, total | kvar | |

4.6.0 | Negative reactive maximum demand, total | kvar | |

5.6.0 | Negative reactive maximum demand in I quadrant, sum | kvar | |

6.6.0 | Negative reactive maximum demand in II quadrant, sum | kvar | |

7.6.0 | Negative reactive maximum demand in III quadrant, sum | kvar | |

8.6.0 | Negative reactive maximum demand in IV quadrant, sum | kvar | |

9.6.0 | Apparent maximum demand, total | kVA |

More information: Power demand, Tariff zone.

### Instantaneous power¶

OBIS code | description | unit | alias |
---|---|---|---|

1.7.0 | Positive active instantaneous power | kW | P+ |

21.7.0 | Positive active instantaneous power in phase I | kW | P+ (L1) |

41.7.0 | Positive active instantaneous power in phase II | kW | P+ (L2) |

61.7.0 | Positive active instantaneous power in phase III | kW | P+ (L3) |

2.7.0 | Negative active instantaneous power | kW | P- |

22.7.0 | Negative active instantaneous power in phase I | kW | P- (L1) |

42.7.0 | Negative active instantaneous power in phase II | kW | P- (L2) |

62.7.0 | Negative active instantaneous power in phase III | kW | P- (L3) |

15.7.0 | Absolute active instantaneous power, sum | kW | `|Q1+Q4|+|Q2+Q3|` |

35.7.0 | Absolute active instantaneous power in phase I | kW | |

55.7.0 | Absolute active instantaneous power in phase II | kW | |

75.7.0 | Absolute active instantaneous power in phase III | kW | |

16.7.0 | Active instantaneous power positive and negative, sum | kW | `|Q1+Q4|-|Q2+Q3|` |

36.7.0 | Active instantaneous power positive and negative in I phase | kW | |

56.7.0 | Active instantaneous power positive and negative in II phase | kW | |

76.7.0 | Active instantaneous power positive and negative in III phase | kW | |

3.7.0 | Positive reactive instantaneous power | kW | P+ |

23.7.0 | Positive reactive instantaneous power in phase I | kW | P+ (L1) |

43.7.0 | Positive reactive instantaneous power in phase II | kW | P+ (L2) |

63.7.0 | Positive reactive instantaneous power in phase III | kW | P+ (L3) |

4.7.0 | Negative reactive instantaneous power | kW | P- |

24.7.0 | Negative reactive instantaneous power in phase I | kW | P- (L1) |

44.7.0 | Negative reactive instantaneous power in phase II | kW | P- (L2) |

64.7.0 | Negative reactive instantaneous power in phase III | kW | P- (L3) |

9.7.0 | Apparent instantaneous power | kW | |

29.7.0 | Apparent instantaneous power in phase I | kW | |

49.7.0 | Apparent instantaneous power in phase II | kW | |

69.7.0 | Apparent instantaneous power in phase III | kW |

More information: Active energy, Instantaneous power, Phase.

### Network parameters¶

OBIS code | description | unit | alias |
---|---|---|---|

11.6.0 | Maximal current | A | Imax |

31.6.0 | Maximal current in phase I | A | Imax (L1) |

51.6.0 | Maximal current in phase II | A | Imax (L2) |

71.6.0 | Maximal current in phase III | A | Imax (L3) |

91.6.0 | Maximal current in neutral | A | Imax (N) |

11.7.0 | Instantaneous current | A | I |

31.7.0 | Instantaneous current in phase I | A | I (L1) |

51.7.0 | Instantaneous current in phase II | A | I (L2) |

71.7.0 | Instantaneous current in phase III | A | I (L3) |

91.7.0 | Instantaneous current in neutral | A | I (N) |

12.7.0 | Instantaneous voltage | V | U |

32.7.0 | Instantaneous voltage in phase I | V | U (L1) |

52.7.0 | Instantaneous voltage in phase II | V | U (L2) |

72.7.0 | Instantaneous voltage in phase III | V | U (L3) |

32.7.0 | Instantaneous voltage in neutral | V | U (N) |

14.7.0 | Frequency of signal in the installation | Hz | f |

### Metadata¶

OBIS code | description |
---|---|

0.0.0 | Meter address (1) |

0.0.1 | Meter address (2) |

0.2.0 | Firmware version |

0.2.2 | Tariff code |

0.9.1 | Meter time |

0.9.2 | Meter date |

0.9.4 | Meter date & time |

0.8.0 | Peak power period |

C.1.0 | Meter serial number |

C.90.1 | Optical port serial number |

F.F.0 | Meter error register |

More information: Tariff, Peak power.

### Special codes¶

OBIS code | description | example |
---|---|---|

S.1.1.2 | Device battery status | 2.76 |

S.1.1.4 | Readout timestamp (real) | 2020-11-19 10:45:02 |

S.1.1.6 | Successful readouts since restart (e.g. battery replacement) | 433 |

S.1.1.7 | Failed readout attempts on 1-st/2-nd communication message | 23/22 |

S.1.1.8 | Meter communication parameters | 3, 300 |

S.1.1.9 | Temperature | 24 |

S.1.1.10 | Readout timestamp (corrected) | 2020-11-19 10:45:00 |

S.1.1.12 | Energy consumption (based on blink measurements) | 10.44 |

S.1.1.16 | Device status | LAST_READOUT_INCORRECT |

S.1.1.19 | Failed readouts since restart (e.g. battery replacement) | 67 |

**Clarifications**

- S.1.1.7 — The device asks meter for data twice. First it asks for an identifier, then registers with OBIS values. That is why we may have failed readouts on two messages.
- S.1.1.8 — It is the infrared transmission power (3) and a baud rate used for the communication (300 bps).
- S.1.1.12 — Based on the blinks/usage ratio and number of blinks counted, we can calculate the estimated energy consumption.