The original release of the Dual Line Encoder did not support Two Encoder Feed to Stop operation.

The Two Encoder Feed to Stop used and corrected the motor encoder resolution for generating Queue Targets. The Line Encoder counts were converted to Motor resolution counts. In order to implement the Dual Line Encoder feature each Line encoder needs a correction factor. This meant the code needed to be changed to correct and use the Main Encoder Resolution for generating Queue Targets. Encoder counts from the motor and the second line encoder are converted to the Main Encoder Resolution.

Although Dual Line Encoders cannot be enabled on a V3 controllers, common code was modified to allow it to be done on the V4 controllers.

The DIP switch setting to enable the second encoder has been enabled on the XL200CL.