Group Indicator Flashing Red and Yellow
Faults Present in Displayed Group Channels
Allen-Bradley · Compact 5000 Digital I/O Modules
What does Group Indicator Flashing Red and Yellow mean?
The Group A or Group B indicator is flashing red and yellow, indicating that I/O status is currently displayed for that group of channels and at least one fault condition exists within those channels. This visually alerts the technician to a fault within the active group.
Common Causes
- One or more individual I/O channels within the actively displayed group (Group A or Group B) have an active fault condition.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Ensure the correct group (Group A or Group B) is actively displayed by verifying the indicator is flashing red and yellow.
- 2
Examine the individual channel I/O status indicators (if available on the module faceplate) for specific fault indications within that group.
- 3
Access the module's diagnostic information in Studio 5000 Logix Designer to pinpoint the specific channel faults within the group.
Verified technical data. Last updated: March 2026
Related Faults
Source: Allen-Bradley Compact 5000 Digital I/O Modules