The IP address for the HMI is configured in the System Settings window in the HMI.
When you first receive your HMI, it is running the demo project for that particular model. You will see an arrow in the bottom-right corner of the screen that gives you access to the System Toolbar when you touch it (on a cMT it is the orange circle in the upper-left corner of the screen).
Touch the arrow, then touch the “gear” icon to enter the System Settings window (the default system password is 111111). The first tab in the System Settings window is the network tab, which is where you configure the IP address of the HMI.
Please refer to Tech Note 5077 (IP Addresses of an HMI and a PC) or Tech Note 5112 (What's my IP Address? in EBPro) for more information.