Select the representative communication type tab. For example, Ethernet Port 1.
Scroll to TCPIP Settings. 
Check the Enable TCP/IP Control checkbox (disabled by default).
          
Make note of the 
Control Part Number
 and 
Trigger String
 fields. This information is required to send a TCP/IP trigger from external software.
Click 
Apply
 in the TCP/IP settings window. Click 
OK
 in the following prompt.