Beckhoff EL34 Series Documentation page 61

EL3483 - LEDs and connection
Fig. 41: EL3483 LEDs
LED Color Meaning
RUN green This LED indicates the terminal's operating state:
off
flashing rapidly
flashing
Single flash
on
System OK green on
L1 - L3 green on
OK
flashes
off
L1 - L3 red on
Error
EL34xx
State of the EtherCAT State Machine [} 35]:
INIT = initialization of the terminal
State of the EtherCAT State Machine [} 35]:
BOOTSTRAP = function for terminal firmware updates [} 278]
State of the EtherCAT State Machine [} 35]:
PREOP = function for mailbox communication and different default settings set
State of the EtherCAT State Machine [} 35]:
SAFEOP = verification of the Sync Manager [} 113] channels and the distributed
clocks.
Outputs remain in safe state.
State of the EtherCAT State Machine [} 35]:
OP = normal operating state; mailbox and process data communication is possible
System OK,
Voltage in the normal range
L1 L2
Voltage in the critical range
(warning threshold exceeded)
L1 L2
Voltage in prohibited range
(error threshold exceeded)
L1 L2
Version: 1.5
L3
L3
L3
Mounting and wiring
61