Error handling and diagnostics
EL675282 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
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