TRICONEX CM3201自動化卡件,CM3201模塊
遠(yuǎn)程擴展器模塊（RXM）
RXMs和機箱允許輸入/輸出模塊
位于距離主機箱。RXM集合，包括CM3201
在三個相同模塊中，用作Tricon的中繼器和擴展器
輸入/輸出總線并提供接地回路隔離。一個主RXM集支持三個
通過連接到三個遠(yuǎn)程位置
遠(yuǎn)程RXM裝置位于遠(yuǎn)程底盤。請參閱“系統(tǒng)配置”
關(guān)于配置的第11頁使用RXMs的。
RXM套件可用于光纖
通信速率為的電纜375千比特每秒。這些集合
提供最大抗干擾性靜電和電磁
干擾，并支持使用光纖調(diào)制解調(diào)器和光纖點到點布線進行配置。遙遠(yuǎn)的
這些地點最遠(yuǎn)可達(dá)7.5英里TRICONEX CM3201
（12公里）的距離。
右圖顯示了a的三個通道的單向布線
遠(yuǎn)程位置。每個通道一個
電纜承載從
主RXM到遠(yuǎn)程RXM，以及
另一根電纜承載
來自遠(yuǎn)程的主RXM
RXM。必須連接一對模塊
對于三個通道中的每一個，
總計六根電纜，用于
每個遠(yuǎn)程位置。
Remote Extender Module
(RXM)
RXMs and chassis allow I/O modules
to be located several kilometers from
the Main Chassis. RXM sets, consisting
of three identical modules, serve as
repeaters and extenders of the Tricon
I/O bus and provide ground loop isola
tion. A primary RXM set supports three
remote locations by connecting to three
remote RXM sets housed in a remote
chassis. See “System Configuration”
on page 11 regarding configurations
that use RXMs.
RXM sets are available for fiber-optic
cables with a communication rate of
375 kilobits per second. These sets
provide maximum immunity against
electro-static and electro-magnetic
interference, and support configura
tions with optical modems and fiber
optic point-to-point cabling. Remote
sites can be located as far as 7.5 miles
(12 kilometers) from the primary site.
The figure at right shows uni-direc
tional cabling for three channels of a
remote location. For each channel, one
cable carries data transmitted from the
primary RXM to the remote RXM, and
the other cable carries data received by
the primary RXM from the remote
RXM. A pair of modules must be wired
for each of the three channels,
amounting to a total of six cables for
each remote location.
