Allen-Bradley 1756 Series, User Manual, Page: 72 / 136

72 Rockwell Automation Publication 1756-UM013B-EN-P - October 2019
Chapter 4 1756-OBV8S Output Module Features
Connection Fault Handling
You can configure module behavior when a connection fault occurs, that is, the
connection between the owner-controller and the output module breaks. You
must define the immediate output behavior when the connection breaks.
Output Behavior Immediately After a Connection Fault
When the connection between an owner-controller and output module breaks,
the output can behave in these ways, depending on how the Fault Mode
parameter is configured:
• Turn off - Default
• Hold its last state
If you configure the output to hold its last state, the output remains at that state
value until this occurs:
• The connection to the owner-controller is re-established.
• The output returns to normal operation, as defined in the module
configuration.
Output State Once Connection is Re-established
Once the connection between the owner-controller and output module is re-
established, the output resumes normal operation.
ATTENTION: If you change the Output state from OFF to HOLD during Program
or Communication Fault modes, make sure this does not create an unsafe state
of your safety system.