IS210DTCIH1AA GE 系统程序存储器

3860825HHP7 14″ BRAKE WHEEL
3860826XXPX 19″ STD BLANK BORE WHEEL
3860962G2 CONTACT TIP >
3865674G1 SUPPORT
3866756G2 TIP MOVABLE 2800Y108 1180
3897180P4 PLATE
3897180P7 PLATE
3897181G1 TORQUE ROD AND CROSS HEAD
3897181P4 CROSS HEAD
3897181P6 ADJUSTING NUT
3897182P12 BACK STOP ANGLE
3897182P4 TIE ROD

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描述

PLC的存储器分为系统程序存储器和用户程序存储器。系统程序相当于个人计算机的操作系统,它使PLC具有基本的智能,能够完成PLC设计者规定的各种工作。系统程序由PLC生产厂家设计并固化在ROM内,用户不能直接读取。PLC的用户程序由用户设计,它决定了PLC的输入信号与输出信号之间的具体关系。用户程序存储器的容量一般以字(每个字由16位二进制数组成)为单位,三菱的FX系列PLC将用户程序存储器的单位称为步(Step,即字)。小型PLC的用户程序存储器容量在lK字左右,大型PLC的用户程序存储器容量可达数M(兆)字。

 

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