Rockwell Automation 1757-ABRIO Process Remote I/O (RIO) Communication Interface Module - Manual (Page 25)

Publication 1757-UM007D-EN-P - December 2008 23
Configure the 1757-ABRIO Module Chapter 2
b. Select the value that matches the Last State switch setting in
the backplane of the I/O chassis, either De-energize or Hold
Last State.
This setting tells the 1757-ABRIO module what to do if the
controller stops updating the tag to which this chassis’s digital
data is mapped.
c. Repeat steps 7a and 7b for all racks that contain 1771 remote
I/O modules.
Adding Block Transfer
Modules Autoconfiguration can locate the racks present on the network but it
cannot detect the analog I/O modules in those racks. Remote I/O
protocol does not allow for module identification to be communicated
on the network. Because of this, Block Transfer modules need to be
added manually. You do not have to add digital modules.
To add a block transfer module, complete the following steps.
1. Expand the rack that contains the analog I/O module in the
network tree.
2. Right-click the partial rack that contains the module and select
Add Module.
The Add BT Module dialog box opens.
3. Select the Module Type from the pull-down menu.