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介绍SIMATIC H系统的基本组成,S7-400H硬件冗余原理、S7-400H的硬件组态、S7-400H的系统通讯。
Describes the basic components of a SIMATIC H system, the principle of redundancy of an S7-400H hardware, the hardware configuration of an S7-400H, and the system communication of an S7-400H.