BECKHOFF CX1100-000x - Manual (Page 60)

Error handling and diagnostics
58 Embedded PC
CX1100-0004 power supply LEDs
Display LED Meaning
PWR
power supply
The LED lights up green when the power supply is correct,
but red if there is a short circuit.
off E-Bus is not connected
on E-Bus is connected / no data traffic on E-bus
L / A
blink E-Bus is connected / data traffic on E-bus
Indicates the state of the EtherCAT bus:
off INIT
blink
PRE-OPERATIONAL
(frequency: 200 ms on / 200 ms off)
single flash
SAVE-OPERATIONAL
(frequency: 200 ms on / 1000ms off)
on OPERATIONAL
flickering
BOOTSTRAP
(frequency: 50 ms on / 50 ms off)
double
flash
reserved for future use
(frequency: 200 ms on / 200 ms off / 200 ms an / 1000 ms
off)
triple
flash
reserved for future use
(frequency: 200 ms on / 200 ms off / 200 ms an / 200 ms off
/ 200 ms an / 1000 ms off)
RUN
quadruple
flash
reserved for future use
(frequency: 200 ms on / 200 ms off / 200 ms on / 200 ms off
/ 200 ms on / 200 ms off / 200 ms on / 1000 ms off)
The functions for L/A and RUN LED are available in hardware revision > 2.0. The LEDs have on function in older
revisions.