This procedure is applicable only to Haas rotaries on machines with software version 100.16.000.1030 and higher.
Download and extract the reverse rotary direction files. Refer to Next Generation Control - Reverse Rotary Direction Files.
Find your rotary model in the extracted folder and copy it to a USB memory device.
Insert the USB memory device with the rotary configuration file into the USB port on the control pendant.
Select your reverse rotary file . Press ENTER. The reverse rotary files have an R at the end of the file name.
Press F2 to copy the reverse rotary file.
Navigate to User Data  on the Copy To screen.
Press F4 to change the physical connection .
Press F3 to Apply Rotary.
Cycle the power on the machine when you are prompted.
HANDLE JOG the axis to make sure it operates correctly.