
Parameterization and commissioning
EL6731
114
Version: 2.8
5.1.8
Diagnostics and error description
5.1.8.1
LED description
Fig. 114: LEDs
LED behavior
The LEDs facilitate diagnosing of the main terminal states:
LED
Color
Meaning
RUN
green
This LED indicates the terminal's operating state:
off
State of the EtherCAT State Machine:
INIT
= initialization of the terminal;
BOOTSTRAP = function for firmware updates of the terminal
single flash State of the EtherCAT State Machine:
PREOP
= function for mailbox communication and different standard-settings
set
Flashing
State of the EtherCAT State Machine:
SAFEOP
= verification of the sync manager channels and the distributed
clocks.
Outputs remain in safe state
on
State of the EtherCAT State Machine:
OP
= normal operating state; mailbox
and process data communication is possible
BF
red
off
DP master is in CLEAR/OPERATE mode, all DP slaves are in data
exchange
Flashing
DP master is in CLEAR/OPERATE mode, at least one DP slave is in data
exchange
on
DP master is in STOP mode
CPU Err red
on
EL6731 processor error
single flash The EL6731 processor starts