Rockwell Automation 1766-Lxxxx MicroLogix 1400 Programmable Controllers User Manual - Manual (Page 241)

Rockwell Automation Publication 1766-UM001H-EN-P - May 2014 201
MicroLogix 1400 Distributed Network Protocol (DNP3) Appendix F
Unlike serial port configuration, cycle power to the controller after downloading
the Ethernet port configuration to enable the DNP3 over IP feature.