3HAC026254-001 ABB

336A4940DTP7BK CABLE RJ45 PATCH 7′ BLK CAT5E
336A4940DTP7BL CABLE RJ45 PATCH 7′ BL CAT5E
336A4940DTP7RD CABLE RJ45 PATCH 7′ RED CAT5E
336A4940DTP8BK CABLE RJ45 PATCH 8′ BLK CAT5E
336A4940DTP8RD CABLE RJ45 PATCH 8′ RED CAT5E
336A4940DTP9BL CABLE RJ45 PATCH 9′ BL CAT5E
336A4940DTP9RD CABLE RJ45 PATCH 9′ RED CAT5E
336A4940EZP1 COMPACT FLASH MODULE PROGRAM
336A4940EZP2 COMPACT FLASH PROGRAM UCCAM06A
336A4940FCP02 LIGHT ASM 120V W/O RECPT

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描述

除了I/O映象区以外,系统RAM存储区还包括PLC内部各类软设备(逻辑线圈、数据寄存器、计时器、计数器、变址寄存器、累加器等)的存储区。该存储区又分为具有失电保持的存储区域和无失电保持的存储区域,前者在PLC断电时,由内部的锂电子供电。使这部分存储单元内的数据得以保留;后者当PLC停止运行时,将这部分存储单元内的数据全部置“零”。

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