Rockwell Automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Packaged Controllers Quick Start and User Manual - Manual (Page 41)

Publication IASIMP-QS010B-EN-P - October 2009 41
Prepare the Computer, Network, and Controller Chapter 2
9. Click the Support tab.
10. Verify that the IP Address and Subnet
Mask match what you entered on the
Network Worksheet .
If these numbers do not match what
you entered, contact your network
administrator to verify that your IP
address is correct.
11. Close the Local Area Connection
Status dialog box.