TRICONEX 3806E 使用一组三条I/O总线的机箱
三重I/O总线传输数据
在I/O模块和主
处理器，每秒375千比特。
带有三重I/O总线
背板的底部。每个
I/O总线的通道在
三个主要处理器之一，以及
I/O上的相应通道
单元
I/O总线可以在
使用一组三条I/O总线的机箱
电缆。
通信总线
通信（COMM）总线
在主处理器和
2处的通信模块
兆比特每秒。
机箱的电源已分配
跨越两个独立的电源导轨
沿着背板的中心向下。
机箱中的每个模块
来自两个电源导轨的电源
双功率调节器。有四个
每个输入上的功率调节器组
和输出模块：每个模块一套
通道A、B和C以及一组
状态指示LED指示器。
现场信号
每个I/O模块将信号传输到或
从现场通过其关联
现场终端组件。底盘中的两个位置连接在一起
逻辑插槽。第一个位置保持
活动I/O模块，并且第二位置保持热备用I/O模块。
终端电缆连接到
背板顶部。每个连接
从终端模块延伸到
活动和热备盘I/O模块。
因此，有源模块和
热备用模块接收相同的
来自现场终端的信息
装电线。
The triplicated I/O bus transfers data
between the I/O modules and the main
processors at 375 kilobits per second.
The triplicated I/O bus is carried along
the bottom of the backplane. Each
channel of the I/O bus runs between
one of the three main processors and
the corresponding channels on the I/O
module.
The I/O bus can be extended between
chassis using a set of three I/O bus
cables.
Communication Bus
The communication (COMM) bus
runs between the main processors and
the communication modules at 2
megabits per second.
Power for the chassis is distributed
across two independent power rails
down the center of the backplane.
Every module in the chassis draws
power from both power rails through
dual power regulators. There are four
sets of power regulators on each input
and output module: one set for each of
the channels A, B and C and one set for
the status-indicating LED indicators.
Field Signals
Each I/O module transfers signals to or
from the field through its associated
field termination assembly. Two positions in the chassis tie together as one
logical slot. The first position holds the
active I/O module and the second position holds the hot-spare I/O module.
Termination cables are connected to the
top of the backplane. Each connection
extends from the termination module to
both active and hot-spare I/O modules.
Therefore, both the active module and
the hot-spare module receive the same
information from the field termination
wiring.
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