Sorry, I missed the 12
00 00 00 4B 00 00 00 01 00 00 - 00 1B
00 00 00 4B parameter address
00 00 00 01 data size
00 00 - min
00 1B max
00 a1 MSB
00 a2
00 a3
4B a4 Least significant byte - parameter address
F0 41 10 00 00 2F 12 00 00 00 4B Value bits 0-6 Checksum:Method 1 starting 7 F7
F0 start of sysex
41 Roland
10 unit id
00 00 2F model id
12 command DT1 (11 is RQ1 data request)
00 00 00 4B address
Value bits 0-6 7bit value
Checksum:Method 1 starting at byte 7 - the address - the header is ignored
F7 end of sysex
All the best
Royce