Indicators and LEDs

The module has 16 LEDs for indicating the output status for each of the channels, and an LED that indicates module status.
The module contains a bicolor red/green module status LED. The bicolor LED is forced Red on power-up until it is controlled by the firmware. It is used to indicate the health of the product.
In addition, there are 16 bicolor red/yellow LEDs that indicate the output status for each of the 16 channels:
  • When the channel LED is steady yellow, it means the channel is turned on.
  • When the channel LED is off, it means the channel is turned off or no module power is applied.
  • The Red LED is driven on by the module to indicate a fault, if defined, for that output. It may not be steady on. When the LED is flashing red, it means there is a no load, short circuit condition, or a field power loss condition.
The module uses the top, bicolor red/green Module Status LED to indicate the status of the module.
The table below summarizes the Module Status LED states:
Module State:
Module Status LED State:
The module is not powered.
Off:
Confirm that the system is powered.
The module has a connection to the owner controller and is operating normally.
Steady Green:
None.
The module does not have a connection to the controller. A connection can result from missing, incomplete, or incorrect module configuration.
Flashing Green:
Troubleshoot your Logix Designer application to determine what is preventing a connection from the module to the controller and correct the issue.
The module experienced a nonrecoverable fault.
Steady Red:
Cycle power to the module.
One of the following conditions exists:
A module firmware update is in progress.
A module firmware update attempt failed.
The device has experienced a recoverable fault.
A connection to the module has timed out.
Flashing Red:
Let the firmware update progress complete.
Re-attempt a firmware update after one fails.
Use the Logix Designer application to determine the cause of the module fault.
The Connection and Module Info categories of the module’s configuration indicate the fault type.
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