Thanks for those informative replies. I think I get it now.

Thanks for that detailed and helpful reply, Jason. I tried turning Local Control on and I found I could control the gate time whilst the arpeggio was ...

This is clearly the same logic as on my MX49. On further investigation, I find that only the Tone & EG/FX modes are unlocked; the EQ and ARP/MS modes ...

Many thanks for that informative response.

Jason and Dragos, I'm really grateful for the time and effort you have put into helping me to solve this. I now feel rather silly as I traced the prob...

There are no significant differences between my setup and the one shown in the screenshots from Dragos. I tried the standalone and VST plugin versions...

All is correct, so far as I can tell but the error is still there. The MODX is at firmware version 2.52, same as on the Yamaha site. MODX is selec...

This looks to be exactly what I need. However, after I downloaded MODX Connect (firmware version 2.52) and opened it in Cubase, I keep seeing a firmwa...

Thanks. It'll take me a while to understand this concept but I don't mind.

The MX Reference Manual, page 67, gives information about the assignable controllers. To use them to change Volume levels, it's Utility>03:Controller>...