Rockwell Automation POINTBlock Series User Manual page 163

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