IS200EXAMG1B GE 硬件和软件

IS200HSLAH2A
IS200JPDBG1A
IS200JPDBG1ABB
IS200JPDCG1A
IS200JPDDG1A
IS200JPDEG1AAA
IS200JPDFG1A(DD)
IS200JPDGH1A
IS200JPDHG1A
IS200JPDHG1AAA
IS200JPDLG1A
IS200JPDMG1A
IS200JPDPG1AAA
IS200JPDSG1A
IS200PRTDH1A

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Description

设计大中型可编程序控制系统时不要耗尽它的硬件和软件资源对于设计的新系统,硬件上至少要保留15%左右的冗余,在软件编制时,同样要估计用户软件对计算机资源的需要与用量。尤其对中间继电器,计数器/定时器的使用,要留有余地。

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