1.2.
Light-Emitting Diode Indicators (LEDs)
Status Indicators
LED
LED State
Operating State
CPU OK
On Green
CPU has passed its power-up diagnostics and is
functioning properly.
(After initialization sequence is
complete.)
Off
Power is not applied or CPU has a problem, which
may be indicated by blink pattern.
Blinking
Other
LEDs off
CPU in Stop-Halt state; possible watchdog timer
fault. If the programmer cannot connect, cycle
power with charged Energy Pack attached and refer
to fault tables.
CPU OK
On Amber CPU indicating CPU320/CRU320 compatibility setting
FORCE
On Amber Refer to the section,
Backward Compatibility with
CPU320/CRU320/CPU315
for more information.
RUN
Blinking in
unison
CPU is updating an internal programmable hardware
device.
OUT EN
RUN
On Green
CPU is in Run mode.
Off
CPU is in Stop mode.
OUT EN
On Green
Output scan is enabled.
Off
Output scan is disabled.
FORCE
On Amber Override is active on a bit reference.
Off
No Overrides active in I/O Reference Tables.
RDSD
On Green
USB Device detected (No Activity)
Blinking
Green
Port activity detected on USB Interface
5
PACSystems* RX3i 1GHz 64MB CPU w/Ethernet Quick Start Guide
GFK-2941E
