TRICONEX 3706A 输入输出模块

TRICONEX 3706A 输入输出模块

TRICONEX 3706A 输入输出模块

在这一条总线上除三种不同的控制器模件以外，还有DCS网络的接口模件。在控制总线上，控制器之间可以调用数据。使得模拟量和开关量之间的结合很好。

控制总线不是每一种DCS系统都有的，可以把各种控制器分别连到DCS网络上。控制器之间的数据调用要通过DCS网络。控制总线的速率情况与I/O总线的情况相类似。通常是几十K到几兆之间。

当CPU和存储器的能力比较强时，把开关量的逻辑运算和模拟量的采集功能都在一个控制器中完成。在控制总线上就只有一种形式的控制器。其协议采用载波监听，广播发送，类似以太网的协议。

TRICONEX 3706A 输入输出模块

In addition to three different controller modules on this bus, there are interface modules for the DCS network. On the control bus, data can be called between controllers. The combination between analog and switching quantity is very good.

The control bus is not available in every DCS system, and various controllers can be connected to the DCS network separately. Data calls between controllers are made through the DCS network. The rate situation of the control bus is similar to that of the I/O bus. Usually between tens of Kelvin and megabytes.

When the ability of CPU and memory is relatively strong, the logic operation of switching quantity and the acquisition function of analog quantity are completed in one controller. There is only one form of controller on the control bus. Its protocol uses carrier monitoring, broadcast transmission, similar to Ethernet protocol.