Rockwell Automation 1757-ABRIO Process Remote I/O (RIO) Communication Interface Module - Manual (Page 107)

Publication 1757-UM007D-EN-P - December 2008 105
Supported 1771 Modules Chapter 8
2. For each channel, set the Failure State.
This can be either Minimum, Maximum, Last State, or User
value. This is the value the channel output will be if the
1771-NOV module loses communication with the 1757-ABRIO
module or the host controller stops updating the tag to which
the 1771-NOV module’s data is mapped.
3. If the Failure State for a channel is set to User Value, enter the
User value.
The is the value the output will be set to on loss of
communication.
4. If desired, enable real-time sampling and set the sampling rate,
from 0.1 to 10.0 seconds.
This becomes the effective data update rate and may override
the update rate if the update rate is smaller.
5. Set the Update Time for the module’s block transfer.
The range is 1 to 16382 milliseconds. This sets the requested
update rate; the actual rate depends on the baud rate, the
number of racks on the RIO network and whether block
transfers are running to other modules in the same rack.
6. Click OK to accept the module configuration.
I/O Data
The host application writes 8 words of floating point data to the
1771-NOV module.
This data can be mapped to a numeric write tag.
1771-NOV Module I/O Data
Word Description
0 Channel 1 data
1 Channel 2 data
2 Channel 3 data
3 Channel 4 data
4 Channel 5 data
5 Channel 6 data
6 Channel 6 data
7 Channel 7 data