1.**CPU板**：包含微处理器、RAM存储器、实时时钟、LED指示灯、INIT按钮和CompactFlash接口。这本质上是控制器的大脑。

2.**基板**：包含两个用于连接到控制网络的RJ45以太网端口（CN1、CN2）和两个RJ45串行端口（COM3、COM4）。COM3是一个带有调制解调器控制信号的RS232C端口，而COM4是隔离的，用于连接配置工具。

3.**冗余**：支持CPU冗余以获得更高的可用性，包括CPU、CEX总线、通信接口和S800 I/O的冗余。

4.**高完整性功能**：通过添加SM81x模块和SIL认证软件实现。这允许通过添加SM81x模块并选择适当的软件，将非关键控制方案升级为SIL认证方案。

5.**认证**：AC 800M高完整性控制器通过了SIL 2和SIL 3认证，使用不同的硬件和软件配置组合（PM865/SM810/SM811或PM867/SM812）。它还支持IEC 61508，并拥有TÜV安全和业务关键流程控制认证。

6.**特点和优点**：

-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认证。

-内置冗余以太网通信端口。

总的来说，它看起来像是一个稳健可靠的控制器，其功能旨在确保关键过程控制应用程序的安全性、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.