Ethernet Communication Module IFD9506 2. Setting up HMI editing software, Screen Editor: Step 1: Open Screen Editor, “File" Ж “New”. In the “Base Port Controller” column, select “Delta Controller RTU”. Step 2: “Option” Ж “Configuration”. Set up the communication format in “Communication” page. As below, set it to RS-485 communication mode. DVP-PLC Application Manual 45