Module Properties Dialog Box - Fault/Idle Action Tab Overview (1794-OE8H; 1797-OE8, -OE8H)

Use this tab to change the module’s internal safe state for both the Analog and Digital Fault States. This tab configures the safe state values for Fault State outputs and is not available for modules that do not have outputs.
IMPORTANT:
Some of the configuration information for this module is located in the output module-defined data type and is different than that on an RSLogix 5 system. Because this information is exposed differently in RSLogix 5 and RSLogix 5000 systems, you must remember to verify the configuration information in the output module-defined data type on an RSLogix 5000 system.
In addition, an output module is configured by a controller that establishes a connection as an owner; however, only one owner connection is permitted for output modules. If another controller attempts to establish an owner connection, the connection attempt is rejected.
connection
The link between networks and devices.
Parameters
Communication Fault Behavior
Select the way in which you want the adapter to respond when a communication fault occurs with this module.
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When a communication fault occurs, the adapter resets the output data to the module’s on-module safe state values (local mode fault) when it receives a reset command from the software/controller instead of resetting to zero. If Analog Fault State is set to Maximum value, the output is set to the Maximum safe state value.
Choose from:
  • Apply Local Module Safe State - Applies the on-module Safe State value provided on the Fault/Idle Action tab for the channel (default value).
  • Apply Safe State to Outputs - Sets the output signals to the values configured as Safe State values.
  • Hold Last Outputs -Retains the module output data in its last state.
Program Mode Behavior
Select the way in which you want the adapter to respond when it detects Program mode (idle).
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When the adapter is receiving real time output data from the controller, the module is in Run mode. When the adapter is not receiving real time output data from the controller and if there is a communications fault, the module operates in fault mode. Under any other conditions it is in Program mode, or Idle mode. When it detects Run mode, the adapter copies the output data from the controller to the corresponding module output. When it detects Program mode, it responds according to the choice you select for this field.
Choose from:
  • Apply Local Module Safe State - Applies the on-module Safe State value provided on the Fault/Idle Action tab for the channel (default value).
  • Apply Safe State to Outputs - Sets the output signals to the values configured as Safe State values.
  • Hold Last Outputs -Retains the module output data in its last state.
Local Fault Mode Behavior
This mode determines how the module responds to internal communication faults and module faults. The internal module fault states are determined by setting the Digital Safe States and the Analog Safe States.
When a fault is detected, the adapter can be configured to the following.
  • Any Fault - Internal bus communication faults or any module fault (default value).
  • Communication Fault - Bus communication faults between the adapter and the module.
Output Mode
The configured settings (Analog/Digital) of the output channels based on the configuration page settings. The output modes are reflected from the Configuration Page with or without clicking on the Apply button.
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This feature is disabled and used for status purposes only.
Digital SS Value
This feature applies the selected safe state value to the module outputs only when "Apply Local Module Safe State" or "Apply Safe State to Outputs" is chosen for either the Communication Fault Behavior or Program Mode Behavior. The digital values for each channel are as follows.
  • Off (default)
  • On
This feature is disabled if the channel mode is Analog.
Digital Fault State
The internal safe state settings used when an I/O module reacts to faults when a channel is in digital mode. The possible settings are as follows.
  • Reset Output - Resets the module output data to zero (default).
  • Hold Last State - Leaves the module output data in its last state.
Analog SS Value
This feature determines how your I/O module reacts to faults when a channel is used in analog mode. Select a value to apply to the module outputs only when "Apply Local Module Safe State" or "Apply Safe State to Outputs" is chosen for either the Communication Fault Behavior or Program Mode Behavior. The values are output counts and, therefore, units do not apply.
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Values shown on the Configuration tab for Analog Mode Data Format are used by the module for reference only. Choosing an Analog Mode Data Format on the Configuration tab does not set a value for the Analog SS Value on the Fault/Idle Action tab Analog SS Value. Use the translated values in the table below under the Safe State Value column to choose a correct Analog SS Value.
This feature is disabled if the channel mode is Digital.
Configuration Page (Current Range Field)
Safe State Value (decimal)
0-20mA 1000/mA (0...22,000) (default value)
0...22,000 (default value)
0-20mA 500/mA (0...11,000)
0...11,000
0-20mA 3276/mA (0...65,535)
0...65,535
4-20mA 1000/mA (2000...22,000)
2000...22000
4-20mA 4095/mA (0...65,535)
0...65,535
0-20mA 363/mA (0...8000)
0...8000
4-20mA 625/mA (-625...10,625)
-625...+10,625
4-20mA 625/mA (-1250...11250)
-1250...+11,250
Analog Fault State
The internal safe state settings used after an internal fault condition occurs. The module, in analog mode, may set a minimum value, maximum value, hold last state or 50% of range, depending on your setting for the Analog Fault State. The possible settings are as follows.
  • Minimum Value - Use the minimum value of the selected data format (default value).
  • Maximum Value - Use the maximum value of the selected data format.
  • Hold Last State - Leaves the module output data in its last state.
  • 50% of Range - Use the value at the 50% range of the selected data format.
OK
Click this button to accept your edits on all tabs and close the dialog.
Cancel
Click this button to delete your edits on any tab and close the dialog.
Apply
Click this button to make your edits effective on any tab and continue editing.
If:
  • you are online in Program, Remote Program or Remote Run mode and,
  • this controller is the owner controller and,
    controller
    A device that controls machines or processes elements (for example, a programmable controller or relay panel).
  • you have changed the module’s configuration in the software,
when you click the Apply or the OK button, the information is automatically sent to the controller. The controller tries to send the information to the module (if the connection to the module is not inhibited). If you don’t click the Apply or OK button, your changes are not sent to the controller.
TIP:
The connection to a FLEX I/O module using Rack communication cannot be inhibited. The
Inhibit
check box on the Connection tab is disabled in this case.
Help
Click this button for assistance with this tab.
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