At the following link you can find a new english manual on how to connect and configure SongBook+ and Yamaha keyboards:

>> Link to download Manual_Yamaha_SongBook.pdf


Here is also an interesting video manual from Fred Smith, a user of SongBook+how to control SongBook+ from Tyros:
(But id doesn't show the new possibility to use "Code" but the older method using the "MIDI-Wheels")

>> Video HowTo on YouTube