5
PACSystems™ RSTi
-EP EPSCPE100 Standalone CPU Quick Start Guide
GFK-3012E
LED LED State
Operating State (at Power-Up)
RUN
Blinking; All
other LEDs off
This LED indicates the status of PLC during powering
up. It starts blinking 6 seconds after applying power to
the PLC and remains in this state for up to 15 seconds.
After this all LEDs turn off and will remain in this state
until PLC is ready.
LED LED State
Operating State (after Power-Up)
OK
On Green
PLC has passed its power-up diagnostics and is
functioning properly.
Off
Power is not applied, or PLC has a problem.
Blinking; All
other LEDs
off
PLC in STOP/Halt state; possible watchdog timer fault. If
the programmer cannot connect, cycle power and refer
to the fault tables. Refer to the section entitled
for more details
RUN
On Green
PLC is in RUN mode.
Off
PLC is in STOP mode.
Blinking; All
other LEDs
off
Indicates that PLC has encountered a fatal error and is
blinking the error code.
Fault
On Red
PLC is in STOP/Faulted mode: a fatal fault has occurred.
Refer to the section entitled
details.
Off
No fatal faults detected.
