Rockwell Automation 1769-ADN Compact I/O 1769-ADN DeviceNet Adapter - Manual (Page 140)

Publication 1769-UM001B-EN-P - October 2002
6-28 Application Examples
Changing the 1769-SDN Configuration
Changing (adding or removing) the amount of data the controller has
assigned to the scanner is done in the expansion module
configuration screen. From within RSLogix 500, I/O configuration,
open the 1769-SDN scanner module and change the input or output
words as needed. Save the program and download to the Controller.
TIP
Reducing the number of words for either inputs or
outputs will require a change in the 1769-SDN’s
scanlist, which is done using RSNetWorx.
IMPORTANT
It is recommended that you NOT reduce the number
of words assigned to a 1769-SDN’s scanlist once a
system is operational. Changing the number of
words may cause addressing problems on the
controller side, and mapping changes on the
DeviceNet network.
Adding words to an existing system is relatively easy
to do, because it doesn’t affect existing addresses or
mapping. Simply add the number of additional
words that are needed in the module (using the
above example), and change the scanlist using
RSNetWorx.