There are two options available from the Configure menu: Configure and Generic COM Interface.
Configure
Selecting this option brings up the Configuration dialog box.
Ports (Modbus or EI)
Note for Ethernet users only: Skip this section and refer to the “Ports (Ethernet)” section immediately following for details on the Ports option in the Ethernet software.
The Modbus version of the PMCS DDE Server supports up to 256 communication ports. Pressing the Ports button displays the Communication Port Configuration dialog box:
40 • Chapter Four - Menus and Toolbars | DDE Server User’s Guide |