Faqs - LEGRAND Raritan PX3TS User Manual

Chapter 5: PDU Linking

FAQs

76
What's the difference between a "master unit" and a "link unit"?
Master and link units are the same model PDUs that are equal to each other,
and each has its own IP address. You designate a PDU as the master unit by
logging into the unit and then adding a link unit. The first unit becomes the
master, and when the first link unit is added, the master unit is automatically
assigned PDU ID "1", which is reserved to identify a master unit only, and the ID
"1" cannot be edited. A connection between the master and the link unit has
now occurred and the chain is formed.
As you continue to add link units to the chain as desired (up to seven link units),
you select Link ID "2" through "8" for the Link ID numbers. (PDU ID "1" was
reserved for the master). Note that the Link ID "2-8" is the sequential number
of each link unit that you select as you add the unit to the chain, and once
selected, the Link ID cannot be edited.
When the chain is established with a single master unit, and one or more link
units, communication occurs with the master unit through its IP address. The
master unit, in turn, communicates to the other link units in the chain through
their individual IP addresses, which optimizes power monitoring and PDU
management.
Which Raritan PDUs can be linked?
With network connectivity, PDU Linking supports these Raritan products when
formed in a linked chain: PX3 with iX7 main controller and PX3TS with iX7 main
controller. All devices in the chain should be the same models.
Can master units be linked together?
No. Once a unit is designated as the master unit in a chain, it cannot be linked
to a master unit in another chain. A master unit can only be linked to one or
more link units in a chain.
How many units can be linked?
Including the master, a full chain can include a total of eight units. The first unit
added is designated as the master unit with the ID "1". Each unit you then add
to the chain is designated as a link unit, beginning with ID "2" and ending with
ID "8".
What is re-linking?
Re-linking is a required function when a link unit no longer recognizes or
responds to the master unit, most likely caused if the link unit was reset to
factory defaults. The status of the disassociated link unit will be displayed as
"Access Denied". Selecting the link unit when in this status displays the Re-link
button that allows reconnection of the link unit in the chain for regaining
device control.