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Legrand PDU User Guide 521
Slave Device Events in the Log
The log messages for connection/disconnection of a cascaded device are different for USB-cascading and
Ethernet-cascading chains.
Messages for the Ethernet-cascading chain:
Whenever the connection or disconnection of a master/slave device is detected, both Legrand PDUs
connected via that network cable record this event in their internal logs.
There are two slave-related events:
Event
Description
The ETH1/2 network
interface link is now up.
This log entry is generated when the
Legrand PDU detects the connection of
the upstream or downstream cascaded
device on one of its Ethernet ports.
The ETH1/2 network
interface link is now down.
This log entry is generated when the
Legrand PDU detects the disconnection
of the upstream or downstream
cascaded device on one of its Ethernet
ports.
Messages for the USB-cascading chain:
In the Bridging mode, events regarding connection/disconnection of a downstream slave device via USB is
NOT logged.
However, in the Port Forwarding mode, whenever the connection or disconnection of a downstream slave
device via USB is detected, the Legrand PDU at the USB-A end of the USB cable logs it in the internal log.
Note that the Legrand PDU at the USB-B end of the cable does NOT log these events.
There are two slave-related events in the Port Forwarding mode:
Event
Description
Slave connected This log entry is generated when the Legrand PDU
detects the presence of a slave device on its
USB-A port.
Slave
disconnected
This log entry is generated when it detects the
disconnection of a slave device from its USB-A
port.
