Publication 1734-UM001D-EN-P - April 2008
164 Troubleshoot with the Indicators
Indication Probable Cause Recommended Action
POINTBus Status
Off Device not powered - check module status indicator. Apply power to device.
Flashing
red/green
LED power cycle test present. None.
Flashing red Recoverable fault occurred:
• At power cycle the number of expected modules
does not equal the number of modules present
• A module is missing
• Node fault (I/O connection timeout) occurred.
• Configure chassis size.
• Check for missing module and reinstall as
needed.
• Check for I/O module failure and correct as
needed.
Solid red Unrecoverable fault occurred - the adapter is bus off. 1. Cycle power to device.
2. If condition persists, replace device.
Flashing green Firmware (NVS) update in progress. None.
Solid green Adapter online with connections established (normal
operation, Run mode).
None.
Indication Probable Cause Recommended Action
System Power
Off Not active; field power is off or dc-dc converter
problem present.
1. Verify power is on, and apply power if needed.
2. Verify backplane power not exceeded, and correct, as
needed.
3. Replace 1734-AENT module.
Green System power is on; dc-dc converter is active (5V). None.
Field Power
Off Not active; field power is off. Apply field power.
Green Power is on; 24V is present. None.
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