AD5755-1 Communication

Hello I am having trouble communicate with this chip I have the address pin set to AD1 = 1  ADO = 0.  I know I am suppose to send a command NOP  command to read from the desire register.

I am sending the command in this format:

command = AD5755_WRITE_CMD |
              AD5755_DUT_AD1(AD5575_st.pinOne_adState) |

My NOP command is 0x1CE000. Is it suppose to be something else?