Excuse me, do you want to ask "Is there any way for Canon 600exrt to flash 270ex"? The camera flashes 270ex as follows:

1. Make sure that the wireless flash function of 600EX-RT is turned on.

2. Set the channel used on the 600EX-RT, and make sure it is consistent with the channel set on the camera.

3. Find and enter the "slave unit" or "slave" mode in the instruction manual of Speedlite-270EX, that is, set it as the light control unit.

4. Connect the camera and Speedlite-270EX, and then test it to ensure successful flashing.