Rockwell Automation 1747-OS302_OS401 SLC 5/03 and 5/04 Processors Firmware/Operating System Upgrade - Manual (Page 7)

Publication 1747-IN007C-EN-P - October 2002
SLC 5/03™ and SLC 5/04™ Processors Firmware/Operating System Upgrade 7
If the LED’s indicate: (1)
If the LED’s indicate: (1)
(1) The DH485 LED on the SLC 5/03 processor is labeled DH+ on the SLC 5/04 processor.
POWER RUN
FLT
BATT
FORCE
DH485
RS232
Refer to the following key to determine the status of the LED indicators:
Indicates the LED is OFF.
Indicates the LED is ON.
The Following
Error Exists Probable Cause Recommended Action
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 firmware. If the error persists,
contact your Rockwell
Automation representative.
POWER RUN
FLT
BATT
FORCE
DH485
RS232
The Following
Error Exists Probable Cause Recommended Action
Hardware
Watchdog
Time-out 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 firmware. If the error persists,
contact your Rockwell
Automation representative.