Beckhoff EL9 Series Documentation page 57

LEDs
LED Farbe
Power LED green
(E-Bus)
Power LED green
(Power Contacts)
Diagnosis LED** red
Us
Diagnosis LED** red
Up
RUN green
** only EL9410
Process data (only EL9410)
The EL 9410 has a bit width of 2 bits (diagnosis bits for the power contacts voltage [Up] and for the E-Bus
voltage [Us], 'Undervoltage') and is displayed in the TwinCAT tree as follows:
Fig. 43: EL9110 in the TwinCAT tree
If the Up or Us voltage is below 17 V, the corresponding diagnosis bit 'Undervoltage' has TRUE (1) status.
EL9xxx
Bedeutung
off No input voltage at supply input for the E-Bus
on 24 V at supply input for the E-Bus
DC
off No input voltage at supply input
on 24 V at supply input
DC
off No error
on Undervoltage: Us less than 17 V
off No error
on Undervoltage: Up less than 17 V
This LED indicates the terminal's operating state:
off State of the EtherCAT State Machine: INIT =
Initialization of the terminal
flashing (2 Hz) State of the EtherCAT State Machine:
PREOP = Setting for mailbox communication
and variant standard settings
flashing (1 Hz) State of the EtherCAT State Machine:
SAFEOP = Channel checking of the Sync
Manager and the Distributed Clocks. Outputs
stay in safe operation mode.
on State of the EtherCAT State Machine: OP =
Normal operation mode, mailbox- and
process data communication possible
flashing (10 Hz) State of the EtherCAT State Machine:
BOOTSTRAP = Function for e.g. firmware
updates of the terminal
Version: 3.9
Product overview
57