GE WES5120 5120-1506 现场控制器主单元

通道是允许基带信号通过的介质。它通常是有线信道，如本地电缆、架空开线等。

信道的传输特性通常不满足无失真传输的条件,甚至随机变化。

通道也会进入噪音。在通信系统的分析中，噪声n (t) 通常是等效的，并且集中在信道中。

1)紧凑的单插槽CPU模块，CPU中有两个主处理器。一 种是英特尔Micro处理器用于处理一些模拟或特殊功能控制。 另-种是布尔协处理器，用于保持线速切换控制。

2)浮点运算函数。

3)系统基板总线采用开放式VME结构这对钢铁企业来说有时非常重要。并非所有PLC制造商都采用了这种物种结构。采用开放的VME总线架构，可安装300多家第三方厂商生产数千个VME标准模块。

4) S90-70PLC的最大I/0容量为12288个开关点和8192个模拟点。

5) CPU的内存可以从512K字节扩展到6M字节。

A channel is a medium that allows baseband signals to pass through. It is usually a wired channel, such as local cables, overhead lines, etc.

The transmission characteristics of a channel usually do not meet the conditions for lossless transmission, and may even vary randomly.

The channel will also enter noise. In the analysis of communication systems, noise n (t) is usually equivalent and concentrated in the channel.

1) Compact single slot CPU module with two main processors in the CPU. One type is Intel Micro processors used to handle some simulation or special feature controls. Another type is a Boolean coprocessor used to maintain line speed switching control.

2) Floating-point operation function.

3) The system substrate bus adopts an open VME structure, which is sometimes very important for steel companies. Not all PLC manufacturers have adopted this species structure. Adopting an open VME bus architecture, it can install thousands of VME standard modules produced by over 300 third-party manufacturers.

4) The maximum I/O capacity of the S90-70 PLC is 12288 switching points and 8192 analog points.

5) The memory of the CPU can be expanded from 512K bytes to 6M bytes.