If you are only looking to recall presets - then you may be able to do it by sending a MIDI command via 422

Technically MIDI is just a serial command. whether its transmitted by RS232, 422, or a MIDI device - its all the same info, just different electronics connecting it.

Not tried it - but it may work if you have a 422 adaptor connected to catalyst and patched to the MIDI preset trigger device.
Try send a midi serial command (in hex) from the controller.

I've done it with RS232 using a similar method and a USB keyspan adaptor.

Simon