Rockwell Automation 1734-ACNR POINT I/O ControlNet Adapter User Manual - Manual (Page 60)

Publication 1734-UM008B-EN-P - August 2005
5-2 Diagnostics
Indication Probable Cause
Module Status
Off No power applied to device
Alternating Red/Green LED powerup test (module self-test)
Flashing Red Recoverable fault has occurred:
• Firmware (NVS) update
• MAC ID changed
• CPU load exceeded
Solid Red Unrecoverable fault has occurred:
• self test failure (checksum failure at powerup, ramtest
failure at powerup)
• firmware fatal error
Flashing Green Waiting for connection or ControlNet cable break
Solid Green Module is operating correctly (normal mode)
Indication Probable Cause
ControlNet A/B Status
Viewed Together
Both Steady Off Reset, no power or entire network interface deactivated
Alternating
Red/Green Self test mode
Alternating Red/Off Bad/invalid node configuration (such as duplicate MAC ID)
Both Steady Red Failed link interface
Viewed Individually
Steady Off Channel disabled or channel not supported
Flashing Red/Green Invalid link configuration
Flashing Red/Off Severe Link error - link fault or no MAC frames received
Flashing Green/Off Temporary channel error or listen-only
Steady Green Normal operation - MAC frames are being received without
detected errors