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4.7.2 Communication connection between IDU and wired controller
There are 4 kinds of connection between IDU and wired controller, as shown below
Fig.53 One wired controller controls one IDU Fig.54 Two wired controllers control one IDU
Fig.55 One wired controller controls multiple IDUs
Fig.56 Two wired controllers control multiple IDUs
When two wired controllers control multiple IDUs, the wired controller can be connected to
any one IDU, provided that the connected IDU is of the same series. Meanwhile, one and only
one of the wired controllers must be set as a slave controller. At most 16 IDUs can be
controlled by wired controllers and the connected IDUs shall be within a same IDU network.
Lennox
VRF Unit
