Hello.
I didn't post the answer here before because it was a homework for today. The class was this morning, so I can do it now.
The question was about System Exclusive. In particular the idea was to retrieve information about the Scene 45 in a LS9, not just to change the program. So,according to the manual, all you have to do is to send a Bulk Dump Request specifying the type of info that you want to receive.
In this case, it would be about scenes, so, in page 262, you can see right at the beggining of the page, the syntax of this bulk dump request, which is:
F0 43 2n 3E 12 mm ... mm dd dd F7
"n" Stands for the midi channel assigned to the given mixer. By default, this value would be 1, so we use 0 (n-1) in the corresponding byte. 43 means that we are talking about a YAMAHA device, 3E to a digital mixer, and 12 to the LS9. Then, mm ... mm are bytes that depend upon the task that you are involved in. In this case, we are talking about scenes. So, in the table that follows, you see this in the first row, labeled "SCENE LIB". The very next column is "SCENE___". This is a series of characters that you refer to in the chain by using their ascii codes, which are (in hex system) : 53 43 45 4E 45 5F 5F 5F . At first I thought that they left those 3 underscore characters to be filled with the number with the particular scene, but it turned out that it was only a way to complete 8 characters.
Last, for the "dd dd", there is the final column of the table, which has three notes: *1), *14) and *15).
If you read the respective notes, then you know that the first option gives you the information of a specific scene, the second of the currently selected one and the third is the same as the previous one, but including the recall safe settings. So, in the end, the list of hex numbers would be:
F0 43 20 3E 12 53 43 45 4E 45 5F 5F 5F 00 2D F7
Send this message to the LS9 and it will send you back the complete info about scene 45, including the name.
Homework done.
