# Creating SoftPLC Signal Configurations

Interaction between accessories and the SoftPLC is done through exchanging I/O signals.

1. Select Add in the SoftPLC Signal Configurations field to see the list with all supported I/O signals connected to this controller.

2. Clear the irrelevant signals in order to exclude them from the SoftPLC signal configuration (all signals are selected by default).

3. Name the signal configuration list.

The created signal configuration is then available as an option to select from the drop-down list when mapping the signal configurations to the virtual station.

The signals that are not included in a signal configuration (not checked), will still be visible in the SoftPLC configurator Multiprog, but crossed out.