Error handling and diagnostics
EL6752
82
Version: 2.1
7
Error handling and diagnostics
7.1
EL6752 - LED description
Fig. 70: LEDs
LED behaviour
The LEDs facilitate diagnosing of the main terminal states:
EL6752-0000 (DeviceNet master terminal)
LED
Colours
Meaning
RUN
green
This LED indicates the terminal's operating state:
off
State of the EtherCAT State Machine:
INIT
= initialization of the terminal;
BOOTSTRAP
= function for terminal firmware updates
flashing
State of the EtherCAT State Machine:
PREOP
= function for mailbox communication and different standard-settings set
Single flash 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
MNS green
green
off
Master is offline
flashing
Master is online and is performing the Duplicate MAC-ID check
on
Master is online and is communicating with the configured slaves
MNS red
red
flashing
Communication error of the master with one of the configured slaves
on
DeviceNet Bus OFF, DeviceNet voltage error, Master failed Duplicate MAC-ID check