Rockwell Automation 1756-EN2TSC EtherNet/IP Secure Communication User Manual - Manual (Page 24)

24 Rockwell Automation Publication ENET-UM003B-EN-P - August 2013
Chapter 2 Get Started
Certificates
On initial powerup, the subject common name (CN) of the self-generated
certificate is set to Rockwell Automation.
When you generate a new certificate, the CN is changed to the IP address of the
module and the new certificate is applied at the next restart of the module.