Publication 1734-UM001D-EN-P - April 2008
Troubleshoot with the Indicators 161
Indication Probable Cause Recommended Action
POINTBus Status
Off • No power supplied.
• Hardware check is in progress.
• Initialization is in progress.
Apply power.
Solid green Normal operation present. None.
Flashing red 1 Hz - Incorrect POINT I/O module installed.
POINT I/O module removed from backplane.
Verify module installation, no modules removed,
and correct, as needed.
Solid red Critical link failure (BUS_OFF) is present. Check network cabling, and correct, as needed.
Indicator Indication Probable Cause Recommended Action
System Power Off System power not applied. 1. Verify field power is on.
2. Verify backplane power (load current) is not exceeded.
3. Replace 1734-APB adapter.
Green System power (5V) present None.
Field Power Off Field power not applied. Apply field power (24V).
Green Field power (24V) applied. None.
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