Hardware reference
HARDWARE REFERENCE MANUAL
240
Revision 5.0
LED indicators
fig. 130
/i
RUN
IN
L/A
FG
L/A
OUT
UNIT PWR
IO PWR
ERR
TS
LED
Description
Color
Status
Meaning
RUN
Unit status
Green
OFF
Init state
Blinking
Pre-Operational state
Single
flash
Safe-Operational state
ON
Operational state
ERR
Unit error
Red
OFF
No error
Double
flash
An application watchdog timeout has
occurred
Single
flash
Unit has changed its state autono-
mously, due to local error.
Error indicator bit is set to 1 in AL status
register.
Blinking
General configuration error.
ON
A critical communication or application
error has occurred.
L/A IN
Link/activity
IN port
Green
OFF
Link not established in physical layer
ON
Link established in physical layer
Flickering
In operation after establishing link
L/A OUT
Link/activity
OUT port
Green
OFF
Link not established in physical layer
ON
Link established in physical layer
Flickering
In operation after establishing link