Beckhoff EtherCAT EL6022 - Leds and Terminal Connector Assignments; Fig. 30 EL6001, EL6021 - Leds and Connection

Mounting and Wiring
EL600x, EL602x 41Version: 4.6
4.2.4 LEDs and terminal connector assignments
LEDs
Fig.30: EL6001, EL6021 - LEDs and Connection
LED Color Meaning
RUN Green This LED indicates the terminal's operating state:
Off
State of the EtherCAT State Machine [}25]: INIT = initialization of the
terminal or BOOTSTRAP = function for firmware updates [}187] of the
terminal
flashing State of the EtherCAT state machine: PREOP = function for mailbox
communication and variant standard settings
Single flash
State of the EtherCAT state machine: SAFEOP = verification of the Sync
Manager [}105] 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
TxD Green State of the transmit signal line (on: HI signal level on transmit line)
RxD Green State of the receive signal line (on: HI signal level on receive line)