PLL Mode wiring on Romeo all in One Controller

Hi,

I don't understand how to do the jumper setting and the wiring for PLL motor control on the Romeo All in One controller. http://www.dfrobot.com/index.php?route=product/product&product_id=656

Manual: http://www.dfrobot.com/wiki/index.php?title=DFRduino_Romeo-All_in_one_Controller_V1.1(SKU:DFR0004)

Do I realy need to cross wire the Pins or what does the x on the Jumpers mean? (this would then not be possible with jumpers, only with cables?)

Where do I connect the four signal cables of the two encoders?

If someone could help me here, I would be realy glad.

Thanks Robert