Rockwell Automation 1747-L5xx SLC 500 Modular Hardware Style User Manual - Manual (Page 84)

Publication 1747-UM011G-EN-P - June 2008
84 Identifying the Components of Your Processor
SLC 5/02 Hardware Components
The table below provides a general explanation of each processor
status indicator (for both the SLC 5/02 series B and C processor).
SLC 5/02 Status Indicators
RUN
CPU FAULT
FORCED I/O
BATTERY LOW COMM
SLC 5/02 CPU
Battery (provides
back-up power for
the CMOS RAM) Serial Number and
Catalog Number
Memory Module
and Socket
DH-485
Channel 1
Left Side View
Front View
Processor
Status
Indicator
(1)
When It Is Indicates that
RUN
(Color: red)
On (steady) The processor is in the Run mode.
Off The processor is in a mode other than Run.
CPU FAULT
(Color: red)
Flashing (at
power up)
The processor has not been configured.
Flashing (during
operation)
The processor detects a major error either in the
processor, expansion chassis or memory.
On (steady) A fatal error is present (no communication).
Off There are no errors.
FORCED I/O
(Color: red)
Flashing One or more input or output addresses have been
forced to an On or Off state but the forces have not
been enabled.
On (steady) The forces have been enabled.
Off No forces are present or enabled.