Adapter
This dialog is used to select the network card to be used for communication with the EtherCAT Open Mode.

OS (NDIS)
This option uses the operating system (OS) settings for installed network cards. In Description the name of the network card is displayed. Device Name contains the Device Manager path of the installed network card.
PCI
This option controls the network card via the PCI bus address, which is specified in the PCI Bus/Slot field.
![]() | The PCI Bus/Slot field is not enabled until the PCI option is selected. |
DPRAM
This option controls the network card via the DPRAM address, which is specified in the Address field.
![]() | The Address field is not enabled until the DPRAM option is selected. |
Search… button
This button opens a dialog in which all unused or all compatible devices (adapters) can be selected.

Compatible Device… button
The button opens the same dialog as "TWINCAT\Show Realtime Compatible Devices…" in the main menu. Here you can determine whether compatible Ethernet adapters are available in the system.

MAC Address
MAC address of the Ethernet card (read-only).
IP Address
IP address of the card (read-only). The IP address is read from the operating system.
Promiscuous Mode
This is required in order to record Ethernet frames, and should normally be switched off.
Virtual Device Names
A virtual name is used for the network card.
Adapter Reference
If the network adapter is referenced to another device, this option must be selected. This is used, for example, when using the "Multiple Protocol Handler".
Free Cycle
Cycle time in Config mode (no real-time).