Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 105)

Publication 1761-UM006E-EN-P - August 2005
Connecting CompactLogix Controllers on Ethernet 8-13
Figure 8.13 ENI #2 Configuration - Message Communication Tab
The MSG length is 8 bytes or 4 integer words. These 4 words contain
the IP address for ENI #2 and are stored in tag ENI_IP_VALUE, which
is a tag address containing 4 integer words. This is shown in the
CompactLogix controller’s tag database shown below. On the MSG
Instruction’s Communication tab above, the path is “2,250”, where the
2 represents the CompactLogix controller’s serial port and the 250 tells
the ENI/ENIW module that the 4 words of data contain its IP address.
TIP
The 2 in the Path shown in the screen above (2, 250)
directs the MSG to Channel 0 of the CompactLogix
controller. Use 3 for Channel 1 of the CompactLogix
1769-L3x controller.