User manual

Publication 1747-UM011F-EN-P - May 2007
Identifying the Components of Your Processor 89
SLC 5/03 Hardware Components
The table below provides a general explanation of each processor
status indicator on the SLC 5/03 processor.
SLC 5/03 Status Indicators
SLC 5/03 CPU
RUN
FLT
BATT
FORCE
DH485
RS232
RUN REM PROG
Memory
Module
Left Side View
Front View
DH-485, DF1,
or ASCII
Channel 0
Battery
(provides
back-up power
for the CMOS
RAM)
Serial Number and
Catalog Number
DH-485
Channel 1
Keyswitch
Operating System Download Protection Jumper
– do not move unless updating processor
Operating System firmware.
Processor
Status
Indicator
(1)(2)
When It Is Indicates that
RUN
(Color: green)
On (steady) The processor is in the Run mode.
Flashing (during operation) The processor is transferring a program from RAM to the memory module.
Off The processor is in a mode other than Run.
FLT
(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, chassis or memory.
On (steady) A fatal error is present (no communication).
Off There are no errors.
BATT
(Color: red)
On (steady) The battery voltage has fallen below a threshold level, or the battery is missing or not
connected.
Off The battery is functional.
FORCE
(Color: amber)
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.