Configure Channel Output State in Communication Fault Mode

When the connection between a controller and module breaks, the output can behave in the following ways, depending on how the "Communication fault state" parameter is configured:

Turn off - Default
Turn on
Hold its last state

The output remains at that state value until the following occurs:

The connection to the controller is re-established.
The duration expired, which is based on the value that is defined in the “Communication fault state duration”.

For output behavior after a connection fault, you must define how long the output remains at the specified value before it transitions to a "Final communication fault state".

You can configure the output to remain at the specific value for the following times:

Forever
1 second
2 seconds
5 seconds
10 seconds

After the "Communication fault state duration" time expires, the output transitions to the user-defined "Final communication fault state".

The "Final communication fault state" defines the state to which the output goes after the "Communication fault state duration" time expires.

Once the connection between the controller and module is re-established, the output resumes normal operation.

To configure the output states in communication Fault mode, see Chxx - Digital Output View.

When communication fails in Program Mode, the output can behave in the following ways, depending on how you configure the When Communication Fails in Program Mode parameter:

Leave Outputs in Program Mode State – It causes the output to behave as defined by the Output State in Program Mode selection.
Change Outputs to Communication Fault Mode State – It causes the output to behave as defined by the Output State in Communication Fault Mode selection.