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3.4.2. Wiring
One-to-one/two-to-one system
Applicable to bi-directional communication between a wired controller and an IDU.
One-to-one system: One wired controller controls one IDU. Two-to-one system:
Two wired controllers control one IDU. Parameters displayed on the wired
controller vary with the parameters of the IDU. The data is updated in real time.
Communication cables between an IDU and a wired controller (X1, X2) may be
connected in reverse order.
For a two-to-one system, one controller will be the master controller while the
other will be the slave controller.
P/Q/E
X1/X2
Two-to-one
For both a one-to-one system and a two-to-one system,
the maximum wiring length is 200 m.
P/Q/E
X1/X2
X1/X2
○ ○ ○
One-to-one
INFORMATION
i
59
P/Q/E
Not allowed
X1/X2
Two-to-one
P/Q/E
X1/X2
V.1
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