When writing to a DO of a 9375 it will throw error -66229.
This happens because we try to write at module level but the module has some read only ports and it will throw the error.
To fix it we need to change :
C:\Program Files (x86)\National Instruments\LabVIEW 2020\vi.lib\NI\DCAF\Modules\scan engine\execution\create_module_map.vi
In here we need to check if all variables are writable and readable

