Black Box GEH-6510 manual Chapter Four Menus and Toolbars DDE Server User’s Guide

Because the ports are not part of the host PC hardware, they are considered virtual ports. A virtual port refers to a single RS-485 port on a particular hardware gateway. The Configured Virtual Ports box lists all the virtual ports available to be configured with proper Ethernet addressing information and port number. The virtual ports are named NetCOM1 through NetCOM256; these names cannot be altered.

To change the characteristics of a previously configured port, select it and click Modify. Select an existing port and click Delete to delete the configuration information for a virtual port.

Clicking on Add displays the Add Virtual Port dialog box, shown below. (Clicking on Modify brings up the same dialog box with the selected port’s characteristics displayed for your review and/or modification. Also, the Virtual Port selection pull- down list is disabled in the Modify command.)

44 • Chapter Four - Menus and Toolbars DDE Server User’s Guide