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Error handling and diagnostics
4.2
Diagnostic LEDs EK1521, EK1521-0010
LEDs for fieldbus diagnostics
LED
Display
LINK / ACT
green
off
(X1)
on
flashing
LED diagnostics EtherCAT state machine
LED
Color
RUN
green
56
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: 3.6
EK112x, EK15xx
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