Grass Valley Maestro Master Control Reference Manual v.2.4.0 - Manual (Page 43)

MAESTRO — Automation Interface Protocol Technical Reference Manual 43
rate: 0,1-5 0 = Transition rate NOP
1 = Slow
2 = Medium
3 = Fast
4 = Cut
5 = Custom (used with <rate_SS:FF> argument to specify transition rate)
rate_SS:FF: <seconds><frames>
delay_SS:FF: <seconds><frames>
black_SS:FF: <seconds><frames>
seconds: FF,00-09 (hex, one byte)
FF = argument NOP, causes Saturn to ignore the contents of the <seconds><frames> pair
00-09 = Seconds representing 0:00-9:00
frames: 00-1D (hex, one byte)
00-1D = Frames representing 0:00-0:29