Rockwell Automation 1715-OF8I Redundant I/O System User Manual - Manual (Page 217)

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 217
1715 Redundant I/O System in SIL 2 Safety Applications Chapter 6
Set Safe State Values for Inputs
You must define the safe state values for inputs if the SIL 2 data verification
checks have determined that the connection is not valid and the Connection
Reaction Time Limit (CRTL) has expired.
The default safe state value for digital inputs is OFF; for analog input modules,
the safe state value is 0. Follow these steps to change the default values.
1. Click the Input States When CRTL Expires tab.
2. Use the pull-down menus to choose values for each input point.
3. Click OK.