All switch blocks of a model, such as breakers and IGBT, can be driven by digital input channels.

To assign a digital input to a switch block:

• Hover over the port of the desired switch block. When the mouse is over the port, the pointer changes to a hand.
• Click the port.

OR

• Click the block to open the Parameters sidebar.
• Then, click the arrow of the gate parameter to open the Deep Panel of the desired parameter.
• The Deep Panel is where to find the list of connections.
  • For most blocks, you will already have a connection to Simulink, added by default when dropping the block onto the diagram.
  • This means that the block is driven by Simulink or HYPERSIM.
• Click the + card to add a new connection.
• Next, click the Digital Input button to add a new digital input to the block.
• The source pin, along with the polarity, can be edited once the new connection card shows up.

• Note that two connections can have the same digital input, as below. If you do so, be careful with the polarity of each switch.

To remove a connection:

• Open the Deep Panel to display the connections of a parameter.
• Hover over the card of the connection to be removed. A Delete icon appears.
• Click the icon to remove the connection.

To select the Polarity of a digital input channel:

In digital circuits, when a signal is:

• Active low, this means that the signal will be performing its function when its logic level is 0.
• Active high, this means that the signal will be performing its function when its logic level is 1.

The user can change the polarity of the digital input channels.

• HIGH indicates that the switch is active when a low voltage is provided to the physical pin.
• LOW indicates that the switch is open when a low voltage is provided to the physical pin.