ELAU ISH100/30025/0/0/00/0/00/00/00是一款工控备件，它属于ELAU C600系列。在PLC系统中，它被用于为正在传输的数据指定存储位置。系统总线将CPU与主内存相连，同时也可能与二级缓存相连。其他总线，如IO总线，从系统总线分支出来，为CPU和其他外设之间提供通信通道。

It is an industrial control spare part that belongs to the ELAU C600 series. In a PLC system, it is used to specify a storage location for the data being transmitted. The system bus connects the CPU to main memory and may also be connected to the L2 cache. Other buses, such as the IO bus, branch out from the system bus and provide communication channels between the CPU and other peripherals.