A controlled angle retarder and method for making is presented. At least one platform section includes a frame, a plurality of float arms movably coupled with the frame, an endless belt carried by the plurality of float arms, and a cutterbar assembly carried by the plurality of float arms and movable in a localized manner in upwards and downwards directions. Subsequently, the EPSECU determines whether or not the rotational speed of the electric motor and the steering torque are inside an idle stop transition area by referring to a table stored in a memory in advance. In addition, the system and method optionally and more preferably incorporate the effect of dynamic contrast injection of dye into the papilla for fluoroscopy. A remote count stores the number of data entries stored in the FIFO. By performing an exclusive-or on at least a portion of the third value and at least a portion of the first intermediate value, the key conversion system produces at least a first portion of the second key value, and at least a second portion of the second key value is produced as the second intermediate value.