You can connect an SX series CPU to D300win via USB, Ethernet or a dedicated loader cable, depending on the model.
Configure the communication settings according to the connection method.

Follow the steps 1) to 3) below.
1) In the Project Tree window, right-click the resource icon, and then select "Settings."
   * The resource icon is immediately below the "System_Definition" icon, showing the CPU type.
2) On the "Resource setting of MICREX-SX" dialog box, select "Communication setting."
3) On the "Communication setting" dialog box, select a connection port (USB, COM, or communication board: Ethernet),

    and then click the OK button. Close the dialog box of 2) to complete the settings.

Note:
For the connection via Ethernet, you need to set the IP address and port No. (the default is 507).

For more information on the communication settings, refer to the user's manual "SX-Programmer Expert (D300win) <reference>" (FEH257) "4-3-2 Resource setting" and "4-3-3 Communication settings." </reference>