R911273295 REXROTH

3HAC024895-001 ABB
3HAC024987-001 ABB
3HAC025058-001 ABB
3HAC025113-001 ABB
3HAC025154-001ABB
3HAC025171-003 ABB ABB
3HAC025223-001 ABB ABB

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描述

PLC按结构分为整体型和模块型两类,按应用环境分为现场安装和控制室安装两类;按CPU字长分为1位、4位、8位、16位、32位、64位等。从应用角度出发,通常可按控制功能或输入输出点数选型。

整体型PLC的I/O点数固定,因此用户选择的余地较小,用于小型控制系统;模块型PLC提供多种I/O卡件或插卡,因此用户可较合理地选择和配置控制系统的I/O点数,功能扩展方便灵活,一般用于大中型控制系统。

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