Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 119)

Publication 1761-UM006E-EN-P - August 2005
Connecting CompactLogix Controllers on Ethernet 8-27
Figure 8.28 ControlLogix Controller Rung 2 Message Configuration Tab
Figure 8.29 ControlLogix Controller Rung 2 Message Communication Tab
Where PLC_5 Typed Write commands are used, they require a PLC-5
type address to send the data to the receiving controller. Such
addresses do not exist in Logix controllers, so they must be mapped to
existing tags in these controllers, as described on page 8-28.