> For the complete documentation index, see [llms.txt](https://docs.videc.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.videc.de/acron-9.3/en/anlagenkonfiguration/verfahrensgroessen/autogroesse/register_bereitstellung-ersatzwerte.md).

# Allocation tab / Substitute values

Allocation or disabling of unneeded calculated components in the ACRON Reporter dialogs and in reports.

## Calculated components <a href="#berechnungskomponenten" id="berechnungskomponenten"></a>

When the individual calculated components are enabled, you define which additional values you want the Database Engine to compute for the respective process variable. In the dialog boxes of the ACRON Reporter and in reports only the active components are available.

Note that the [Formula Editor](/acron-9.3/en/intro.md) always offers **all** possible components of the process variable to be assigned for selection. If you select a component here for which no allocation is enabled, a warning is generated. If you assign a process variable (n-component) manually – that is, without using the Formula Editor, the use of unallocated components can only be determined by a configuration check.

If the allocation of components is disabled, the use of those components is checked. Warnings relating to the process variables concerned are displayed as appropriate.

As the computation of some components (such as percentile values) is very complex, only the components that are actually needed should be enabled.

Note

The configuration check indicates use of unallocated components by way of a warning.

### Values

Allocation of values

### Sums

Calculation and allocation of sums

### Minimums / Maximums

Determination and allocation of minimums/maximums

### Percentile values

Calculation and allocation of [percentile values](https://github.com/Dataforum-Software/gitbook/blob/master/acron/9.3/en/designer/glossar/perzentilwert_x.md)

### Range limit deviations

Determination and allocation of limit value violations

### Standard deviation

Determination and allocation of standard deviations

### Get floating daily value

Determination and allocation of the floating average value for a specific number of days.

Note

In the reports, this process variable also has the variable *\*.dvalavg* at its disposal in addition to the reporting variable *\*.dval*.

If floating average values are used in weekly or monthly reports, the variables *\*.mvalavg* or *\*.wvalavg* do not appear there. In those reports the value is held in the report variables *\*.mval1* and *\*.wval1*.

The variable *\*.mval1* is not a floating average value, however, but the last value of all *\*.dvalavg*variables.

## Allocation <a href="#bereitstellung" id="bereitstellung"></a>

### Daily/Monthly/Annual data dialog

Allocation of the process variable for daily, monthly and annual data in data areas of the ACRON modules

### For annual reports 'Daily values monthly basis’

Allocation for annual reports of type 'Daily values monthly basis'

Note

Allocation of these values is very computing power-intensive.

### API

Allocation of the process variable for use by the API.

### External connections

Allocation of the process variable for external connections

Note

If this process variable is included in a different plant, that plant's license is extended.

### OPC / DDE

Allocation of the process variable in the ACRON DDE/OPC server

## [Substitute values](https://github.com/Dataforum-Software/gitbook/blob/master/acron/9.3/en/designer/glossar/ersatzwert.md) <a href="#ersatzwerte" id="ersatzwerte"></a>

### Carry forward process values until next change

The last valid value is carried forward until a new valid value is available.

Note

The carry forward of values is limited to 3 years.

### Fill in missing process values

Missing process values are filled in for the entire day.

Note

If this option is not selected, the value is only valid at the entered time. If only one value for the day in question was entered, only one interval value (e.g. 2 h - value) is formed in compression. The other intervals are then empty.

### Substitute value on dropout

Use substitute value if no value can be assigned.

* **Substitute value type**\
  Selection option whether the last valid value or an assigned fixed value is to be used as the substitute value.
* **Value**\
  The entered value is used as a fixed substitute value.

### Substitutes value in case of exceeding measuring range/shortfall

Use substitute value if the value exceeds/falls short of the measuring range.

* **Substitute value type**\
  Selection option whether the last valid value or an assigned fixed value is to be used as the substitute value.
* **Value**\
  The entered value is used as a fixed substitute value.


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