07AC91 ABB

In terms of structure,PLC is divided into two types:fixed type and combined type(modular type).Fixed PLC includes CPU board,I/O board,display panel,memory block,power supply,etc.These elements are combined into a non-removable whole.Modular PLC includes CPU module,I/O module,memory,power module,backplane or rack,and these modules can be combined and configured according to certain rules.

从结构上分，PLC分为固定式和组合式（模块式）两种。固定式PLC包括CPU板、I/O板、显示面板、内存块、电源等，这些元素组合成一个不可拆卸的整体。模块式PLC包括CPU模块、I/O模块、内存、电源模块、底板或机架，这些模块可以按照一定规则组合配置。