Blackmagic Design ATEM Manuel D'installation Et D'utilisation page 194

Data types 129 through 255 are available for device specific purposes.
Operation type (uint8)
0: assign value
1: offset / toggle value
Operation types 2 through 127 are reserved.
Operation types 128€through 255 are available for device specific purposes.
Data (void)
The category, parameter, data type and operation type partition a 24 bit operation space.
Group ID Parameter
Lens
Type Index Minimum Maximum Interpretation
607