Depending upon your exact circumstances this probably isn’t the best way to go about it, but in the interest of answering your question, you need to set Cubase to transmit MIDI Clock. Most software sequencers work similarly. This feature is normally found under the menu that has your synchronization functions in it. In Cubase you’ll find the synchronization functions under the options menu. You’ll need to select the port you want to send MIDI clock out of, but it’s that simple. Then you just set your Triton to receive MIDI clock, load up the sequence, and it should work.
A better way to transfer tracks into your computer-based sequencer is to save them as a SMF (Standard MIDI File) on the Triton. Take that floppy disk and load it into the computer. Cubase, and every other major sequencer, can import these files. This will save you a ton of time and aggravation.