The user can define initial conditions using CMotion Group page. For more information, refer to CMotion. CMotion and CMotion Group using “Euler 321” for rotation. “Euler 321” have a singular angle in 90, 270… degree of RY, but CMotion Group can rotate the singular angle by using all rotation component RX, RY and RZ. (If user use single and double component for rotation, the singular problem has occurred in the specific angle.)