Roland MC-09

$F0 $41 $10 (or 11? because Device ID of MC-09 from 17 to 32 and 10 in hex mean 16?!?) $00 $4F $12 - that's it... I'm trying to finish script and sent it to BCR via BC Manager but nothig good happens)))

Concerning the Device ID:
MC-09_OM.pdf specifies that the Device ID ranges from 17 to 32; but this is the value that you see when you set it as a system parameter. To arrive at the internal value (to be sent in System Exclusive messages, as specified in MC-09_MI.pdf), you have to subtract 1. So the default Device ID is shown as "17", but its internal value is 10H, so you need "$10" in BCL scripts.

Another crucial point is that the checksum must be correct.
So a SysEx message to an MC-09 having the default Device ID must have the following format:
$F0 $41 $10 $00 $4F $12 Address Data Checksum $F7

Address should consist of 4 bytes.

Data must consist of 1 or more bytes.

Checksum must be a single byte, namely bits 0 to 6 of the negative sum of the Address and Data bytes.
You can make the BCR calculate the correct checksum automatically by replacing Checksum in the above definition with "cks-1 6". ("cks-1" is the BCR's name for the checksum method used by Roland, "6" is the index of the first Address byte.)
So:
$F0 $41 $10 $00 $4F $12 Address Data cks-1 6 $F7

Furthermore, for a BCR button/encoder assigned to a single-byte MC-09 parameter, you can replace Data with "val". So:
$F0 $41 $10 $00 $4F $12 Address val cks-1 6 $F7

So all that remains then is to replace Address with the 4 address bytes of the parameter, as specified in the MC-09's Parameter Address Map.

See section 14.6 of BC MIDI Implementation.pdf for further information on System Exclusive messages defined in BCL.

If you're going to define many buttons/encoders, it might be an idea to create a "SysEx model definition file", as explained in section 19 of the BC Manager Manual. (There's even a section specifically about Roland.)
Initially it's a bit more work, but once you have this file, it is very easy to set up buttons/encoders.

The header of such a file for the MC-09 must be something like:

[MODEL]
ProgramName=BC Manager
ProgramVersion=4.0.0
ManufacturerName=Roland
ManufacturerID=41
ModelName=MC-09
ModelID=00 4F
DevicePosition=BeforeModel
MinDevice=10
MaxDevice=1F
DefaultDevice=10
Command=12
AddressLength=4
AfterData=
ChecksumMethod=1
ChecksumStart=6

After the header, you can add the list of parameters you intend to use, including their addresses and value ranges.

Then you can use the "SYX" button on BC Manager's "Custom output" tab to assign any of the defined MC-09 parameters to any BCR button/encoder.

Let me know if you need further assistance.

   Mark.