IS200SCTLG1ABA输出卡件,DCS模块卡件
I如果出现差异，则在经过选定的时间后才会报告。离散：能够指示两种状态的一位应用程序数据。术语“离散”包括真实和内部。分布式控制系统（DCS）：为过程工业设计的专用控制系统。DCS系统通常具有用于连续和批量控制的嵌入式算法。分布式输入/输出：表示CPU和外部设备之间交换的离散和模拟输入和输出的数字信号。外部设备可以广泛分布在远程位置。数据传输通过带有调制解调器的双绞线或光纤电缆进行。双工：投票系统中的两个平行元件。双工：模式，默认：一种表决模式，其中输出可以被表决为1oo2或2oo2。如果一个系统CPU发生故障，双工模式会导致单工操作的故障降级。如果两个CPU都出现故障，则每个输出使用预先选择的默认FTS（故障到安全）状态。D-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D E爱迪生测试实验室（ETL）：OSHA批准的测试实验室。与Wilson Fire一起，GMR系统获得了美国国家消防协会（NFPA）的批准，并通过ETL认证。通电至跳闸：通常非ESD应用，如火灾和气体保护系统使用此惯例。在正常操作中，大多数元件设计为断电操作。然后，安全状态被视为根据信号或表决信号通电。以太网：协议，局域网；以太网是一种公开的通信格式，它使用高速LAN和CSMA/CD（碰撞检测多路访问冲突检测）非确定性协议。GMR CPU可以通过TCP/IP以太网模块与其他系统设备交换数据。扩展电缆：在Series 90-70 PLC主机架及其扩展机架之间传输并行总线信号的电缆。从主机架到最后一个扩展机架的扩展电缆的最大总长度为50英尺（15米）。F工厂互助（FM）：经OSHA批准的测试和认证实验室，GMR PLC和产品经FM认证，可用于I类II类燃烧环境，无需额外外壳。故障安全：当系统发生故障时，元件进入安全状态的能力。失效危险：由于控制硬件故障，系统无法安全响应。故障触点：参见报警和故障触点故障降级：GMR系统中一组组件对相应组件的丢失或故障进行调整的能力。两个允许的降级路径为：3–2–1*–0 3–2-0故障降级方法在每个组的GMR配置期间选择。当故障降级路径达到0时，输出默认为单独选择的安全状态*注：TÜV将1oo1模式的使用限制在预定义的时间段内。非TÜV系统可在不确定的时间内设置为1o1。故障表：Series 90-70 PLC有两个故障表，即PLC故障表和故障表。两者都是维护和修复系统的重要辅助工具。故障表显示了每个故障的确切位置、类型、说明以及故障发生的日期和时间。
f a discrepancy occurs, it is not reported until the selected amount of time has passed. Discrete: One-bit application data that is capable of indicating two states. The term “discrete” includes both real and internal . Distributed Control System (DCS): A proprietary control system designed for the process industry. The DCS system usually has embedded algorithms for continuous and batch control. Distributed Inputs/Outputs: Digital signals representing both discrete and analog inputs and outputs that are exchanged between the CPU and external devices. The external devices may be widely-distributed at remote locations. Data transfer occurs over twisted pair ‘twinax’ wire or fiber optic cables with modems. Duplex: Two parallel elements in a voting system. Duplex: mode, default: A voting mode in which outputs may be voted 1oo2 or 2oo2. Duplex mode provides fault degradation to simplex operation if one system CPU fails. If both CPUs fail a pre-selected default FTS (fail–to–safe) state is used by each output. D-4 Genius® Modular Redundancy Flexible Triple Modular Redundant (TMR) GFT-177A System Technical Product Overview – February 1998 D E Edison Testing Labs (ETL): An OSHA-approved testing laboratory. In conjunction with Wilson Fire, the GMR system has NFPA approval as certified by ETL. Energize–to–Trip: Typically non-ESD applications such as Fire and Gas protection systems use this convention. In normal operation, most elements are engineered to be de-energized operational. The safe state is then considered to be energized upon a signal or voted signal. Ethernet: Protocol, LAN; Ethernet is a published communication format that uses a high-speed LAN and a CSMA/CD (Collision Sense Multiple Access Collision Detection) non-deterministic protocol. GMR CPUs can exchange data with other system devices via TCP/IP Ethernet modules. Expansion Cable: A cable that transmits the parallel bus signals between a Series 90-70 PLC main rack and its expansion racks. The maximum total length of the expansion cables from the main rack to the last expansion rack is 50 feet (15 meters). F Factory Mutual (FM): An OSHA-approved testing and certification lab. GMR PLCs and products are certified by FM for use in Class I Division II incendiary environments without additional enclosures. Fail-safe: The ability of an element to go to a safe state when a system failure has occurred. Fail-to-danger: The inability of a system to be able to respond safely due to a failure within the control hardware. Fault Contacts: See Alarm and Fault Contacts Fault Degradation: The ability of a group of components in a GMR system to adjust to the loss or failure of corresponding components. The two permissible degradation paths are: 3– 2 – 1* – 0 3 – 2 – 0 The method of fault degradation is selected during GMR configuration of each group. When the fault degradation path reaches 0, outputs default to individually-selected safe states. *Note: TÜV limits use of 1oo1 mode to a predefined time period. Non-TÜV systems may be set 1oo1 for indefinite periods of time. Fault Tables: The Series 90-70 PLC has two Fault Tables, the PLC Fault Table and the Fault Table. Both are valuable aids in maintaining and repairing the system. The Fault Tables show the exact location of each fault, its type, an explanation, and the date and time the fault occurred.
