METSO IOP303 模块

METSO  IOP303 模块

METSO IOP303包含AC 800M控制器的机柜该机柜可能需要以下电源：电源装置：为机柜中每个装置的电子电路供电。为现场设备供电：为设备、继电器触点等供电在机柜外部，但连接到机柜中I/O单元的输入/输出内阁强烈建议：在每个机柜中使用电源为单元供电

（仅当机柜并且最大电缆长度小于10m，装置的电源是否可以从另一个机柜获取使用单独的电源为装置供电（包括S800集群调制解调器）和为包含I/O系统的现场设备机柜供电如果I/O中未提供其他信息，请使用上述建议系统文档。为机柜中的单元供电该电源仅连接到机柜内的单元，例如：PM8XX，也为所有通信接口供电（通过CEX总线）以及连接到其电气模块总线的所有S800 I/O单元。BC810为连接到其自身网段的所有通信接口供电。TB820V2/TB840（用于S800 I/O的光调制解调器），也为所有S800供电连接到其电气模块总线的I/O单元。

METSOIOP303 可以通过线程的概念来缓解

抽象是一种强大的机制，可以用定义良好的通用方式处理复杂和不同的(硬件)任务。最基本的操作系统抽象之一是进程。进程是一个正在运行的应用程序，它认为自己正在底层虚拟硬件上独立运行(由操作系统提供)。这可以通过线程的概念来缓解，允许不同的任务在这个虚拟硬件上并发运行，以利用任务级并行性。为了允许不同的进程和线程协调它们的工作，操作系统必须提供通信和同步方法。

除了抽象之外，底层硬件组件的资源管理也是必要的，因为由操作系统提供给进程和线程的虑拟计算机需要在空间上和临时共享可用的物理资源(处理器、内存和设备)。

METSO  IOP303 模块

METSO IOP303 Cabinet containing AC 800M controller This cabinet may require the following power supplies: Power Supply devices: Power the electronic circuits of each device in the cabinet. Power for field devices: Power for devices, relay contacts, etc., outside the cabinet but connected to the input/output of the I/O units in the cabinet Cabinet strongly recommends that: Power the units from the power supply in each cabinet

Can the power supply for the device be obtained from another cabinet only if the cabinet and the maximum cable length is less than 10m? Use a separate power supply to power the device (including the S800 cluster modem) and to power the field device cabinet containing the I/O system If no other information is provided in the I/O, use the recommended system documentation above. This power supply is only connected to the units in the cabinet, such as the PM8XX, and also powers all communication interfaces (via the CEX bus) and all S800 I/O units connected to their electrical module bus. The BC810 powers all communication interfaces connected to its own network segment. The TB820V2/TB840 (optical modem for the S800 I/O), also powers all the I/O units connected to its electrical module bus.

METSOIOP303 can be mitigated by the concept of threads

Abstraction is a powerful mechanism for dealing with complex and disparate (hardware) tasks in a well-defined, generic way. One of the most basic operating system abstractions is the process. A process is a running application that thinks it is running independently on the underlying virtual hardware (provided by the operating system). This can be mitigated by the concept of threading, allowing different tasks to run concurrently on this virtual hardware to take advantage of task-level parallelism. In order to allow different processes and threads to coordinate their work, the operating system must provide communication and synchronization methods.

In addition to abstraction, resource management of the underlying hardware components is also necessary, because the hypothetical computers provided to processes and threads by the operating system need to spatially and temporarily share available physical resources (processors, memory, and devices).

METSO  IOP303 模块

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