> For the complete documentation index, see [llms.txt](https://support.powerio.com/hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.powerio.com/hub/codesys-hvac/en/hvac-modbus-library/functionblocks/abb/abb_terra_ac.md). # ABB\_TERRA\_AC ## `ABB_TERRA_AC` (FB) `FUNCTION_BLOCK` ABB\_TERRA\_AC ### **Representation**
InOut: | Scope | Name | Type | Initial | Comment | | ----------- | --------------------- | ----------------------------------- | ------------ | ------------------------------------------------------------------------------------------------------------------- | | Input | `xEn` | `BOOL` | TRUE | Enable / disable communication (TRUE = enable) | | Input | `byUnitId` | `BYTE` | 0 | Address of the device | | Input | `xUpdateActual` | `BOOL` | FALSE |

Update of actual values (on every rising edge
)

| | Input | `xUpdateSetp` | `BOOL` | FALSE |

Update of setpoints (on every rising edge
)

| | Input | `rCurrentLimit` | `REAL` | 0.0 |

Maximum value - charging current in A (only positive,
integer multiples of 1.0 A are permitted)

| | Input | `xStartStopCharge` | `BOOL` | FALSE | Enable / disable charging process (TRUE = enable) | | Input | `xResError` | `BOOL` | FALSE |

Reinitialization of the outputs eErrorCodeCom on the
error-free state (on each rising edge)

| | Inout | `ModbusClient` | `ModbusClientBase` | | Client of the device | | Output | `eConnectorTxpe` | ABB\_TERRA\_AC\_CONNECTOR\_TYPE | | Device connection type | | Output | `rRatedPower` | `REAL` | | Maximum output power in kW | | Output | `rMaxRatedCurrent` | `REAL` | | Maximum value - hardware charging current in A | | Output | `rProductionSeq` | `REAL` | | Production number | | Output | `rProductionWeek` | `REAL` | | Production week | | Output | `rProductionYear` | `REAL` | | Production year | | Output | `sFirmwareVers` | `STRING` | | Firmware version of the device | | Output | `eSocketLockState` | ABB\_TERRA\_AC\_SOCKET\_LOCK\_STATE | | Cable state of the device | | Output | `eAvailability` | ABB\_TERRA\_AC\_AVAILABILITY | | Device availability | | Output | `eChargingState` | ABB\_TERRA\_AC\_CHARGING\_STATE | | Charging state of the device | | Output | `xChargeRatedCurrent` | `BOOL` | |

Indicates whether charging is currently taking place with the maximum charging current
(TRUE = Yes)

| | Output | `xUnderSetCurrentLim` | `BOOL` | |

Indicates whether the maximum charging current is currently being underrun
(TRUE = Yes)

| | Output | `rCurrentLimitFb` | `REAL` | | Maximum value - charging current in A — feedback | | Output | `rChargCurrent_L1` | `REAL` | | Current charging current in phase L1 in A | | Output | `rChargCurrent_L2` | `REAL` | | Current charging current in phase L2 in A | | Output | `rChargCurrent_L3` | `REAL` | | Current charging current in phase L3 in A | | Output | `rVoltage_L1_N` | `REAL` | |

Current voltage between phase L1 and the
neutral conductor N in V

| | Output | `rVoltage_L2_N` | `REAL` | |

Current voltage between phase L2 and the
neutral conductor N in V

| | Output | `rVoltage_L3_N` | `REAL` | |

Current voltage between phase L3 and the
neutral conductor N in V

| | Output | `rActivePower` | `REAL` | | Current charging power in kW | | Output | `rEnergy` | `REAL` | | Current energy amount of the charging process in kWh | | Output | `rErrorCodeDevice` | `REAL` | | Current error code - device | | Output | `xAlarm` | `BOOL` | FALSE | Collective fault (TRUE = fault) | | Output | `xAlarmCom` | `BOOL` | FALSE | Collective fault - communication (TRUE = fault) | | Output | `eErrorCodeCom` | ModbusErrorCode | | Error code - communication (0 = no error) | | Output | `xBusy` | `BOOL` | | Communication indicator (TRUE = communication) | | Input Const | `diAdrOffset` | `DINT` | 0 |

Offset for calculating the Modbus addresses (from the Modbus
registers) (permitted range: -1, 0, +1)

| | Input Const | `tTimeUpdateSetp` | `TIME` | TIME#45s0ms |

Update interval for the operations that are influenced by the input
xUpdateSetp influenced

| | Input Const | `tTimeUpdateActual` | `TIME` | TIME#1m0s0ms |

Update interval for the operations that are influenced by the input
xUpdateActual influenced

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