品牌:ABB | 规格:DSQC138 | 材质:DSQC138 |
产地:瑞士 |
DSQC138
DSQC138
DSQC138
为了进一步提高PLC的可靠性,近年来对大型PLC还采用双CPU构成冗余系统,或采用三CPU的表决式系统。这样,即使某个CPU出现故障,整个系统仍能正常运行。
存储器
存放系统软件的存储器称为系统程序存储器。
存放应用软件的存储器称为用户程序存储器。
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