Thanks for the reply, however it didn't quite help me on the local off issue.
I found a website with these comments....
"Yamaha have now stopped manufacturing the PSR 270 and have introduced its successor the PSR 280. Local control cannot be switched off, so it has to be done on the software by selecting the echo off function. The problem is, that many sequencers and scorewriters don't actually have this function. The result is that the keyboard is useless when used in this scenario.
I bought three PSR 280s which we intended to use with MIDI workstations, but are now in the keyboard lab with PSR270s and PSR 225s due to the fact that we don't have echo off facilities on the software we use."
This is mainly what I'm worried about. Does cubase allow me to switch off local control/echo off?