Problem of Using IIC on Pynq-Z2

Hi All:
I am using a Pynq-z2 board with Pynq 2.4 installed.
My task is to design an IIC master device with PS or PL.
Now I am trying PS side, I run the i2cdetect command but there is no device.

I did not connect any IIC slave device to the board, will it be the problem?