Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 108)

Publication 1761-UM006E-EN-P - August 2005
8-16 Connecting CompactLogix Controllers on Ethernet
Controller Properties window by clicking on the Edit pull-down menu
and select Controller Properties. Click on the System Protocol tab and
change Error Detection from BCC to CRC and the Baud Rate from
19200 to 38400. Click APPLY, then OK. If you fix the baud rate in the
ENI/ENIW, it assumes CRC error detection.
If you do not change this parameter in your CompactLogix controller,
it will not be able to communicate with the ENI/ENIW. The Baud Rate
of 38400 is being used to increase the upload/download speed.
Finally, since Logix controllers do not use the structured data table
addressing scheme used by PLC and SLC controllers, we must map file
numbers used in the commands sent to any Logix controller to tag
names within them. For example, a MSG sent by an SLC 5/05
controller to the CompactLogix controller uses a PLC-5 Typed Write
command. The target data table address used is N12:0. This file 12
must be mapped to a valid tag name in the CompactLogix. Since the
MSG is 20 integer words in length, a tag in the CompactLogix
controller called “Data_From_505” was created as a 20 integer word
tag.
While offline in the CompactLogix controller project, click on the
Logic pull-down menu and select “Map PLC/SLC Messages”. The
following screen appears:
Figure 8.16 File Mapping in RSLogix 5000
In the File Number column, enter 12. Under the Tag Name, click on
the right side in the white box to reveal your Controller Tags and
select the tag name you created for this purpose (“Data_From_505” for
this example). More than one entry may be mapped. When finished,