Build your LCD cape to beagle

Hello every one,
I wonder how this works cape, and Thereby to build my. Not believe it is
very hard to be done, can someone guide me to make the connections between beagle and this 7 LCD pins. I would very much appreciate some help with this, I’m a little confused why the Cape he makes a connection but the 50 pins LCD used has only 40 pins. I built a plate for LCD and pins datA and control beagle. The LCD starts and some thin colored stripes appear, but the beagle not boot. Below is the datasheet of LCD and electric scheme that used to connect the beagle and LCD.
Cape LCD schematic: