ABB PM825 传感器模块概述：AC800F控制器主板ABB PM825有6个槽位及1个电源槽位，其中有2个槽位采用快速DMA技术与CPU直接进行高速数据通信，这2个槽位通过插入以太网模件实现控制层基于标准 TCP/IP协议以太网的信息传递，剩余4个槽位采用中断方式与CPU及主存储器进行数据交换，每个模件都可以产生自己的中断源。
PM825
同时通过优先级的控制可以实时接收通信模件的错误报告信息，保障来自各种通信模件的大信息量数据快速传递到CPU单元进行处理。为了保证数据最大程度的准确率，AC800F CPU单元的主存储器芯片具有错误检测及修改能力，可以检查32位数据字的2位错误及修改主板提高主存储器的存储容量，实现在AC800F控制器上执行大容量的控制程序，但相应的程序保持设备要更新。
PM825
Overview of ABB PM825 sensor module: The AC800F controller motherboard ABB PM825 has 6 slots and 1 power slot. Among them, 2 slots use fast DMA technology to directly communicate with the CPU for high-speed data. These 2 slots achieve control layer information transmission based on standard TCP/IP protocol Ethernet by inserting Ethernet modules. The remaining 4 slots use interrupt mode to exchange data with the CPU and main memory, Each module can generate its own interrupt source.
PM825
At the same time, priority control can receive real-time error report information from communication modules, ensuring that large amounts of information from various communication modules are quickly transmitted to the CPU unit for processing. In order to ensure the maximum accuracy of data, the main memory chip of the AC800F CPU unit has error detection and modification capabilities. It can check for 2-bit errors in 32-bit data words and modify the motherboard to increase the storage capacity of the main memory, enabling the execution of large capacity control programs on the AC800F controller, but the corresponding programs keep the device updated.
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