Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 106)

Publication 1761-UM006E-EN-P - August 2005
8-14 Connecting CompactLogix Controllers on Ethernet
Figure 8.14 CompactLogix5320 Controller’s Tags
As indicated in Table 8.4, the MSGs in Rungs 2, 3 and 8 are 2 bytes or
1 integer word in length. Their Paths are ‘2,253’, ‘2,252’ and ‘2,248’
respectively; where 253 represents Baud Rate, 252 represents BOOTP
Enable/Disable, and 248 represents the Save function.
The single integer data value for these messages is shown in Table
8.4. “0” is the value for the Save MSG data tag
(ENI_SAVE_TO_FLASH_VALUE), which instructs the ENI/ENIW to
save its configuration to non-volatile memory. “106” is the value for
the Baud Rate MSG data tag (ENI_BAUD_VALUE) which instructs the
ENI/ENIW to begin communicating on its RS-232 port at 38400 Baud.
“1” is the value to disable BOOTP (BootP_disable_value).
As shown in Table 8.4, the MSGs in Rungs 5 and 6 assign IP addresses
to node numbers in the ENI/ENIW module’s Message Routing Table.
These two MSG Instructions are the same as the MSG Instruction in
Rung 3, except the paths are 2,101 and 2,145 and the data tags have
different names; this time containing the IP addresses of the SLC 5/05
(101) and 1756-ENBT module (145).