Allen-Bradley SLC 500 1747-L20 Instrucciones De Instalación página 14

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14 SLC 500™ Fixed Hardware Style Controllers
POWER
PC RUN
CPU FAULT
FORCED I/O
BATTERY LOW
Error Type:
CPU Fault
POWER
PC RUN
CPU FAULT
FORCED I/O
BATTERY LOW
Refer to the following key to determine the status of the LED indicators:
Indicates the LED is off.
Indicates the LED is on.
Indicates the LED is flashing
Publication 1747-IN008B-MU-P
Probable Cause
CPU Memory Error
or Faulty CPU
Faulty Memory
Module
Processor Firmware
Installed Incorrectly
Regardless of any other LED status indicator
conditions, always replace the battery when the
BATTERY LOW LED is on if you want RAM
battery backup.
Recommended Action
Cycle power. If the steady CPU FAULT
LED reappears, replace the controller.
1. Remove power and then remove
the memory module from the
controller.
2. Re-energize the controller.
If steady CPU FAULT LED changes to
flashing, replace the existing memory
module with a replacement module.
If upgrading the processor to a
different firmware level, verify that
the firmware chip orientation
matches the upgrade kit directions.