Diagnostic Leds Ek1521, Ek1521-0010 - Beckhoff EK15 Series Documentation

7.2

Diagnostic LEDs EK1521, EK1521-0010

LEDs for fieldbus diagnostics
LED Display
LINK / ACT gree off
(X1) n
on
flashing
LED diagnostics EtherCAT state machine
LED Color
RUN green
EK1122, EK15xx
State Description
- no connection on the EtherCAT strand
linked EtherCAT device connected
active Communication with EtherCAT device
Meaning
This LED indicates the terminal's operating state:
off State of the EtherCAT State Machine: INIT = initialization 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
flickering State of the EtherCAT State Machine: BOOTSTRAP = function for
terminal firmware updates
Version: 3.4
Error handling and diagnostics
67