9907-164WOODWARD
9907-164WOODWARD
9907-164WOODWARD
软冗余将运行在标准 S7-300 和 S7-400 自动化系统上。
将单通道分布式 I/O 安装在具有冗余 IM 153-2 DP 从站接口的 ET 200M 中，可以增加可用性。 DP 从站接口模块具有两个 DP 接口，一个连接到站 A 的 DP 主站系统，而另外一个连接到站 B 的 DP 主站系统。这样，在两个自动化系统上所实施的软冗余将允许持续进行容错控制任务。术语“容错控制任务”是指在主机站发生故障之后必须由待机站继续执行的用户程序组件。因此，它既可以是整个用户程序，也可以只是特定的程序组件。
软冗余允许用户可以管理以下类型的故障：
● CPU 组件故障（电源、背板总线、DP 主站）
● 因硬件故障或软件错误导致的 CPU 故障
● 冗余连接的总线电缆发生断线，或者冗余 DP 从站接口模块的总线电缆发生断线
● 冗余 DP 从站接口模块 IM 153-2 上的 PROFIBUS 模块故障
scale of the whole system can be expanded. The hardware of the system control station is encapsulated in an all-metal shell, which can withstand the most
Harsh industrial environment. The device can be installed either in a cabinet or on a wall. System complies with all current EMC standards and is CE marked
Chi.
Industrial” DCS system design purpose: the most economical engineering investment, the most powerful control function.
Five features of Industria1″ DCS system:
1. All-round integrated control system, integrating DCS & PLC & Field Bus;
2. Using RISC SuperScalar high-speed CPU, with super performance;
Three high reliability, strict industrial application practice, more than 1000 sets of application performance in China;
4. It has good openness, flexibility and scalability;
Fifth, the project is easy, the interface is friendly, and the maintenance is simple;
2. Industria1″ system communication
Industrial” system uses international standard industrial bus. Field controller supports Profibus, FF, ModBus, Can, etc.
International standard fieldbus, Profibus is the most widely used open fieldbus international standard in the world, divided into FMS, DP and PA
Level 3, DP communication rate can be as high as 12Mb. Profibus is used to connect intelligent devices such as distributed I/0 stations and field bus instruments.
Communication between the process station, operator station and engineering station takes place via the system bus DigiNetS (Industrial Ethernet). user
Different transmission media (RJ45 twisted pair, thin, thick or fiber optic cables and mixed media) and network
