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Indicator, Indication, Probable cause – Rockwell Automation 1734-APB Point I/O Profibus Adapter Module User Manual

Page 60

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Publication 1734-UM005B-EN-P - June 2001

6-2 Troubleshooting the PROFIBUS Adapter

Indicator

Indication

Probable Cause

System Power

Off

Not active.
Field power is off; or dc-dc converter problem.

Green

System power on.
Dc-dc converter active (5V).

Field Power

Off

Not active.
Field power not applied.

Green

Power on, 24V present.

Adapter Status

Off

No power supplied.
Hardware check in progress.
Initialization in progress.

Green

Adapter operating normally

Red

Hardware check fault.

PROFIBUS Status

Off

No power supplied.
Adapter is off-line (no data exchange with the
PROFIBUS master).

Green

Adapter is online (data exchange with the PROFIBUS
master).

Flashing Green

Adapter is in CLEAR mode and has set the connected
I/O modules into an idle state.

Red

No POINT I/O modules installed in the backplane.

Flashing Red

Set_Parameter telegram rejected.
Maximum number of user parameter bytes overridden.

PointBus Status

Off

No power applied to adapter
PointBus initialization in progress.

Green

Normal operation.

Flashing Red

Incorrect POINT I/O module installed or
POINT I/O module removed from backplane.

Red

Critical link failure. Adapter detected error that
prevents its communication on the PointBus.