My DeviceMaster has an IP Address of 192.168.13.15.
Port 1 would be configured as follows for UDP communication (on the right).  Notice IP Address, checkmarks and Target Port numbers.  The serial data input is through port 1 via serial cable.

The above Target Ports 7001-7008 send data to Physical Ports 2-9.
Be sure that Ports 1 through 16 have the "Enable serial to Ethernet", "Enable Ethernet to serial" and "Allow ethernet data from any IP address checkmarked."
Since only Ports 2-9 are configured for data, then we need to configure ports 10-16 (see below).  Now go to Port 9 (7008) and configure the data to go to ports 10-16 (7009-7015)