IS200SRTDH2A DCS工控模块备件
通过为每个PLC中的通信提供两个Genius总线控制器来实现。GFT-177A第6节通信6-36 GMR系统GMR系统的人机界面通常包括用于数据采集和显示的某种人机界面（HMI）。操作员显示示例HMI的复杂性取决于应用程序的需求。一个简单的HMI可能仅从一个GMR PLC收集数据。一个非常复杂的HMI可以从三个GMR PLC收集和处理数据，模拟GMR投票过程本身。人机界面的操作独立于GMR系统。无论HMI的复杂程度如何，GMR系统操作的完整性都不会受到影响。GMR配置软件为GMR PLC中的数据存储器提供可选择的写入访问级别。默认情况下，不允许写入访问。根据应用程序的需要，可以允许对数据存储器的某些区域进行有限的写访问。监控来自一个GMR PLC的数据GMR系统的最基本类型的人机接口与其中一个GMR-PLC通信，仅监控来自该PLC的数据。除了基本数据之外，HMI还可以监控由Genius总线上的GMR PLC交换的状态数据。通过将通信模块添加到一个GMR PLC中，这种类型的人机界面非常容易融入GMR系统。第二个通信模块也可以安装在同一PLC中，以实现冗余，如下图所示。可使用任何兼容的MI从该PLC获取数据。GMR System Genius总线46625的简单人机界面，监控一个PLC并切换此类型的HMI需要将通信从一个PLC切换到另一个PLC的能力（自动或作为操作员操作的结果）。在这种类型的系统中，如果通常与HMI通信的PLC变得不可用，HMI可以切换到备用PLC并继续提供数据。除了基本数据之外，HMI还可以监控由Genius总线上的GMR PLC交换的状态数据。通过在两个PLC中添加通信模块，这种类型的HMI也易于实现。每个PLC中可以使用两个通信模块，如下图所示，用于冗余。Genius总线46626带开关的简单人机接口6-4 Genius®模块冗余灵活三模块冗余（TMR）GFT-177A系统技术产品概述–1998年2月6来自三个GMR PLC的监控和数据大多数HMI系统都可以提供此功能，它在每个PLC中使用一个通信模块，或每个PLC使用两个通信，如图所示。这种类型的接口可能会从所有三个PLC向操作员提供大量原始数据。除了基本数据之外，HMI还可以监控由Genius总线上的GMR PLC交换的状态数据。Genius总线46627用于收集GMR PLC数据的人机界面监控所有PLC并模拟投票过程最强大的HMI系统处理从GMR PLC获得的原始数据，模拟PLC执行的实际投票。这种类型的系统使用复杂的HMI或通用HMI加上数据集中器和具有特殊应用逻辑的附加PLC来处理收集的数据。（额外的PLC可能是一个经济高效的90-30系列PLC）。这种类型的系统详细描述了GMR PLC中的数据以及Genius块本身的情况。图中显示了每个PLC中使用的两个通信模块和HMI系统冗余的两个主机系统。
implemented by providing two Genius Bus Controllers for communications in each PLC. GFT-177A Section 6 Communications 6-3 6 Human–Machine Interfaces for a GMR System GMR systems often include some type of HumanMachine Interface (HMI) for data gathering and display. Example Operator Display The complexity of the HMI depends on the needs of the application. A simple HMI might collect data from one GMR PLC only. A very complex HMI might collect and process data from three GMR PLCs, emulating the GMR voting process itself. Operation of the Human-Machine Interface is independent of the GMR system. Regardless of the level of complexity of the HMI, the integrity of GMR system operation is not compromised. The GMR configuration software provides a selectable level of write access to data memory in a GMR PLC. By default, write access is not permitted. Depending on the needs of the application, limited write access can be allowed to certain areas of data memory. Monitoring Data from One GMR PLC The most basic type of a Human-Machine Interface for a GMR system communicates with one of the GMR PLCs, monitoring data from that PLC only. In addition to basic data, the HMI can monitor the status data that is exchanged by the GMR PLCs on the Genius bus. This type of a Human-Machine Interface is very easy to incorporate into a GMR system, by adding a communications module to one of the GMR PLCs. A second communications module can also be installed in the same PLC for redundancy, as shown by the next diagram. Any compatible MI can be used to obtain the data from that PLC. Simple Human-Machine Interface to a GMR System Genius bus 46625 Monitoring One PLC with Switching This type of HMI requires the ability to switch communications from one PLC to another (either automatically or as the result of operator action). In this type of system, if the PLC that usually communicates with the HMI becomes unavailable, the HMI can switch to the backup PLC and continue to provide data. In addition to basic data, the HMI can monitor the status data that is exchanged by the GMR PLCs on the Genius bus. This type of HMI is also easy to implement, by adding communications modules in two of the PLCs. Two communications modules can be used in each PLC, as shown in the illustration below, for redundancy. Genius bus 46626 Simple Human-Machine Interface with Switching 6-4 Genius® Modular Redundancy Flexible Triple Modular Redundant (TMR) GFT-177A System Technical Product Overview – February 1998 6 Monitoring and Data from Three GMR PLCs Most HMI systems can provide this functionality, which uses a communications module in each PLC, or two communications per PLC, as shown here. This type of interface can potentially provide large amounts of raw data from all three PLCs to the operator. In addition to basic data, the HMI can monitor the status data that is exchanged by the GMR PLCs on the Genius bus. Genius bus 46627 Human-Machine Interface for Gathering GMR PLC Data Monitoring All PLCs and Emulating the Voting Process The most powerful type of HMI system processes the raw data obtained from the GMR PLCs, mimicking the actual voting carried out by the PLCs. This type of system uses a sophisticated HMI or an general-purpose HMI plus a data concentrator and an additional PLC with special application logic to process the collected data. (The additional PLC might be a cost-effective Series 90-30 PLC). This type of system gives a detailed picture of what is happening to data in the GMR PLCs, and at the level of the Genius blocks themselves. The illustration shows two communications modules used in each PLC and two host systems for redundancy of the HMI system.
