# Topology selected (P-STUP-00007)

P-STUP-00007 | Topology selected
Description | This parameter is used to select a topology description (configuration) for the NC kernel. The selected configuration must be contained in the code in the form of a binary file.
Parameter | konfiguration
Data type | STRING
Data range | EIN_KANAL_KONFIGURIERUNG / ... / ACHT_KANAL_KONFIGURIERUNG
Dimension | ----
Default value | *
Remarks | This parameter ist used automatically in TwinCAT systems. * Note: The default value of variables is a blank string.