The Sony PlayStation 3 Game Console With DVD device used to use the same IR codes as the PlayStation 2 device. I even was able to get Harmony to add some of the other buttons into the library at one time so everything worked great (Discreet power commadns for the PS3IR-Pro). However, it appears that over the last few months someone at Logitech went through and totally screwed up the IR codes that are in the database for the PlayStation 3. I'm not sure where the new IR codes came from, or what they are supposed to work with, but they don't seem to work anymore.
I think about the only way this can be done now is to just use the PlayStation 3 device so you can get the icons, then just use the PS3IR-1000 to teach all of the commands to your Harmony remote.
I tried getting Harmony to add the icons when they added the PS3IR-1000 device to their database but they said they couldn't do it, I'm not sure if Romeo or Mike have tried too or not. I've been gone for a while now so I'm a bit behind.