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10 ControlLogix SERCOS interface Module
Publication
1756-IN572G-EN-P - May 2005
Table 3 Module Health and Communication Status (OK) Indicator
State Description Recommended Action
Off The module is not operating. • Apply chassis power.
• Verify the module is completely
inserted into the chassis and
backplane.
Flashing Green The module has passed internal
diagnostics, but has not
established active
communications.
None, if you have not configured
the module.
Solid Green • Data is being exchanged.
• The module is in the normal
operating state.
None. The module is ready for
action.
Flashing Red • A major recoverable failure has
occurred.
• An NVS update is in progress.
If an NVS update is in progress,
complete the NVS update.
If an NVS update is not in
progress: Reboot
Solid Red A potential nonrecoverable fault
has occurred.
• Reboot the module.
• If the solid red persists, replace
the module.