It is not possible for the TSU7000 to send X10 RF commands directly to modules. You will need to send IR codes via your TSU7000 to devices such as the IR543 or IR543AH for X10 control.

My configuration file includes a device for the IR543 as I use one to control some X10 lamp modules via my TSU7000. Feel free to download my config. if you like here.

For TSU3000 owners I have a seperate .pcf file available which just includes my IR543 device. It can be downloaded here.