The rotation of the +X-axis of the CAESAR II model should be rotated about the vertical axis away from the PCF's East compass point. The default setting is zero, which imposes no rotation. Select +90 to rotate the model a positive 90-degrees. Select -90 to rotate the model a negative 90-degrees.
Z can also be vertical based on special execution setting.
Alternatively, you can rotate the model after importing it to CAESAR II. Use the Rotate command on the Block Operations toolbar.