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1.**CPU板**：包含微處理器、RAM存儲器、實時時鐘、LED指示燈、INIT按鈕和CompactFlash接口。這本質上是控制器的大腦。
2.**基板**：包含兩個用于連接到控制網絡的RJ45以太網端口（CN1、CN2）和兩個RJ45串行端口（COM3、COM4）。COM3是一個帶有調制解調器控制信號的RS232C端口，而COM4是隔離的，用于連接配置工具。
3.**冗余**：支持CPU冗余以獲得更高的可用性，包括CPU、CEX總線、通信接口和S800 I/O的冗余。
4.**高完整性功能**：通過添加SM81x模塊和SIL認證軟件實現。這允許通過添加SM81x模塊并選擇適當的軟件，將非關鍵控制方案升級為SIL認證方案。
5.**認證**：AC 800M高完整性控制器通過了SIL 2和SIL 3認證，使用不同的硬件和軟件配置組合（PM865/SM810/SM811或PM867/SM812）。它還支持IEC 61508，并擁有TÜV安全和業(yè)務關鍵流程控制認證。
6.**特點和優(yōu)點**：
-支持S800 I/O高完整性（PM865、PM866A和PM891）。
-可配置800xA控制生成器。
-完整的EMC認證。
-內置冗余以太網通信端口。
總的來說，它看起來像是一個穩(wěn)健可靠的控制器，其功能旨在確保關鍵過程控制應用程序的安全性、可靠性和可用性。
It sounds like you're describing the CPU board and base plate of the PM865 controller, which seems to be part of a larger control system, likely used in industrial automation or process control. Here's a breakdown of the components and features mentioned:
1. **CPU Board**: Contains the microprocessor, RAM memory, real-time clock, LED indicators, INIT push button, and a CompactFlash interface. This is essentially the brain of the controller.
2. **Base Plate**: Contains two RJ45 Ethernet ports (CN1, CN2) for connection to the Control Network, and two RJ45 serial ports (COM3, COM4). COM3 is an RS232C port with modem control signals, while COM4 is isolated and used for the connection of a configuration tool.
3. **Redundancy**: Supports CPU redundancy for higher availability, including redundancy for CPU, CEX-Bus, communication interfaces, and S800 I/O.
4. **High Integrity Functionality**: Enabled by the addition of an SM81x module and SIL certified software. This allows for upgrading non-critical control schemes to SIL certified schemes by adding the SM81x module and selecting the appropriate software.
5. **Certifications**: The AC 800M High-Integrity controller is SIL 2 and SIL 3 certified using different combinations of hardware and software configurations (PM865/SM810/SM811 or PM867/SM812). It also supports IEC 61508 and has TÜV certification for safety and business-critical process control.
6. **Features and Benefits**:
- Supports S800 I/O High Integrity (PM865, PM866A, and PM891).
- Configurable with 800xA control builder.
- Full EMC certification.
- Built-in redundant Ethernet communication ports.
Overall, it seems like a robust and reliable controller with features aimed at ensuring safety, reliability, and availability in critical process control applications.
