IS220PDIAH1A GE 离散输入模块 用于燃气轮机控制系统

IS220PDIAH1A GE 离散输入模块 用于燃气轮机控制系统

每个 Mark VIe 以太网 I/O 包或模块共享一个处理板。它有以下内容：

具有 RAM 和闪存的快速处理器是第 一位的。

两个完全独立的 10/100 以太网端口插头

硬件复位和看门狗定时器电路

内部温度传感器

指示状态的 LED

读取其他板上ID和电子标识的能力

具有限流器和缓启动功能的输入电源连接器

本地电源，其中还包括监控和排序

IS220PDIAH1A I/O 包或模块功能特定的采集板连接到处理器板。当施加输入电源时，软启动电路会逐渐升高处理器板上的可用电压。处理器复位关闭，本地电源按顺序打开。完成自检例程后，处理器从特定于 I/O 包或模块类型的闪存中加载应用程序代码。为了验证应用代码、采集板和终端板是否正确匹配，应用代码读取板ID信息。当匹配良好时，处理器会尝试通过请求网络地址来启动以太网连接。

地址请求中使用了行业标准动态主机配置协议（DHCP）和终端板的唯 一标识符。以太网启动后，CPU 运行应用程序，对板载逻辑进行编程，并允许采集板开始工作。使 I/O 包能够从一个或两个以太网输入运行所需的整个电路包含在处理器应用程序代码中。当使用两个以太网输入时，两个网络路径都始终处于活动状态。I/O 包或模块操作不会受到任何一个网络故障的影响，并且正常工作的网络连接会显示故障。与传统的热备份系统相比，仅在主端口发生故障时才使用第二个端口，这种配置具有更高的容错性。

IS220PDIAH1A GE 离散输入模块 用于燃气轮机控制系统

Each Mark VIe Ethernet I/O packet or module shares a processor board. It has the following:

A fast processor with RAM and flash memory comes first.

Two fully independent 10/100 Ethernet port plugs

Hardware reset and watchdog timer circuit

Internal temperature sensor

LED indicating status

The ability to read ids and electronic identifiers on other boards

Input power connector with current limiter and slow start function

Local power, which also includes monitoring and sorting

IS220PDIAH1A I/O packages or modules feature specific acquisition boards connected to processor boards. When the input power is applied, the soft start circuit gradually increases the available voltage on the processor board. The processor restarts and shuts down, and the local power supply turns on in sequence. After completing the self-check routine, the processor loads the application code from flash memory specific to an I/O package or module type. In order to verify that the application code, acquisition board and terminal board are correctly matched, the application code reads the ID information of the board. When the match is good, the processor attempts to initiate an Ethernet connection by requesting a network address.

The industry-standard Dynamic Host Configuration Protocol (DHCP) and the unique identifier of the terminal board are used in the address request. Once the Ethernet is started, the CPU runs applications that program the onboard logic and allow the acquisition board to start working. The entire circuit needed to enable I/O packets to run from one or two Ethernet inputs is included in the processor application code. When two Ethernet inputs are used, both network paths are always active. I/O packets or module operations are not affected by any one network failure, and working network connections show failure. Compared with traditional hot backup systems, the second port is used only when the primary port fails, which is more fault tolerant.

IS220PDIAH1A GE 离散输入模块 用于燃气轮机控制系统