存储器plc内的存储器主要用于存放系统程序、用户程序和数据等。1)系统程序存储器plc系统程序决定了plc的基本功能，该部分程序由plc制造厂家编写并固化在系统程序存储器中，主要有系统管理程序、用户指令解释程序和功能程序与系统程序调用等部分。系统管理程序主要控制plc的运行，使plc按正确的次序工作；用户指令解释程序将plc的用户指令转换为机器语言指令，传输到cpu内执行；功能程序与系统程序调用则负责调用不同的功能子程序及其管理程序。联系人：黄晓飞(销售工程师) 移动电话:18030263579 固话:0592-6895320 qq：2472574325全球最低价甩卖   lot of 2 universal instruments 42860801-0 vme com intmotorola mvme,vme 162-353 board #1hp vme a2636-66013 cpu card, 32m memory #3hp vme a2636-66013 cpu card, a2636-66008 64m memory #4
1738-oa2m12ac3现货ab
1738-oa2m12ac3现货ab
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