Rockwell Automation 1747-L5xx SLC 500 Modular Hardware Style User Manual - Manual (Page 160)

Publication 1747-UM011G-EN-P - June 2008
160 Troubleshooting
Status Indicator The following
error exists Probable Cause Recommended Action
PO
WE
R
RU
N
FORCE FL
T
DH485/DH+/ENET BA
TT
RS232
On Off Off On Off On Off NVRAM error Major hardware
failure due to noise,
improper grounding, or
poor power source.
Cycle power and see if the error repeats itself. If the
error clears, you should be able to download the
operating system. If the error persists, contact your
Rockwell Automation representative.
On Off On On On Off On Hardware
Watchdog
Timeout
Major hardware
failure due to noise,
improper grounding, or
poor power source.
Cycle power and see if the error repeats itself. If the
error clears, you should be able to download the
operating system. If the error persists, contact your
Rockwell Automation representative.
On Off On On On Off Off Fatal Hardware
Error
Major hardware
failure due to noise,
improper grounding, or
poor power source.
Cycle power and see if the error repeats itself. If the
error clears, you should be able to download the
operating system. If the error persists, contact your
Rockwell Automation representative.
On Off Off On Off On On Corrupted
Operating
System Memory
Module
The operating system
on the Flash EPROM is
corrupt.
Cycle power and see if the error repeats itself. If the
error persists, either contact your Rockwell Automation
representative for a new operating system memory
module, or download the old operating system.
On Off On On Off On Off Flash EPROM
Failure
The processor flash is
corrupt.
Cycle power and see if the error repeats itself. If the
error clears, you should be able to download the
operating system. If the error persists, contact your
Rockwell Automation representative.
On Off On On On On Off Corrupt or
Missing
Operating
System
The operating system
is missing or has been
corrupted.
Cycle power and see if the error repeats itself. If the
error clears, you should be able to download the
operating system. If the error persists, contact your
Rockwell Automation representative for a new
operating system.
On Off On On Off On On Downloadable
Operating
System Failure
Failure during
transmission of
downloadable
operating system.
Download the operating system.
On Off Off On On On Off Incompatible
Platform
The upgrade of the
operating system is
incompatible with the
processor hardware.
Use an operating system that is compatible with your
processor hardware.
On Off Off On On On On Memory
Write-Protected
An attempt was made
to download the
operating system onto
write-protected
memory.
Change the jumper on the processor to the program
position.