
Commissioning/Configuration
EP9521-0020
29
Version: 1.2
5.4
Diagnostic LEDs
Fig. 24: EP9521-0020 diagnostic LEDs
LEDs for fieldbus diagnostics/power supply
LED
Color
Display
State
Description
Link/Act (X1, X2,
X3)
(red arrows)
green
off
-
No connection on the EtherCAT strand
on
linked
EtherCAT device connected
flashes
active
Communication with EtherCAT device
Power
(blue arrows)
green
off
No supply voltage
on
24 V supply voltage present (Us or Up)
LED diagnostics EtherCAT State Machine
LED
Color
Meaning
RUN
(green arrow)
green
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 default 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
orange
on
EP9521 is in EtherCAT mode, rotary switch was moved during operation
Remedy:
Resetting or voltage reset
red
on
EP9521 is in Ethernet mode, rotary switch was moved during operation
Remedy
: Resetting or voltage reset
red/green
flashing
Invalid rotary switch position after PowerOn
Remedy
: Move rotary switch to valid position
Содержание EP9521-0020
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