Video: How to change the M580 IP address with Unity Pro.
Setting the TCP/IP parameters (IP Address, Subnet Mask, Gateway) on the Modicon M580 ePAC (Ethernet Programmable Automation Controller) via Unity Pro.
Modicon M580 PAC Controller
The address must be changed offline. Double clicking on the M580 Ethernet port will open the necessary window to make the changes. Select the IP Config tab and enter in the desired IP Address then rebuild and download the project.