描述
PLC在进行逻辑运算之前，必须对外部信号进行采样[8]，若要实现指令的功能，首先要设置外部I/O在梯形图中的地址，系统才能够对用户程序中所使用的I/O地址与单片机的引脚地址相匹配。本设计在I/O设置对话框底层设计了如表1所示的数据处理函数。
NetApp FAS960 R200 X1030A-R5 Fan Module 441-00001
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NetApp R-200 FAS960 Front Panel LCD w/Board 443-00001
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Netapp DS14 106-02082+C1 Xyratex 31589-17 Module
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Lot of 2 NetApp DS14 36.6GB Hard Drives In Sleds/ Trays
NetApp Data ONTAP 6.4.1 FAS250 Series ( 3 of 3 )
NETAPP DISK-36GB-10-NF4 36.0GB Hard Drive FC / F304
NetApp FAS960 Filer Head HotSwap Fan Module 441-00001
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4x Xyratex/NetApp 31589-17 Fiber Channel Module
NetApp SATA Caddy 108-00087, 320A, X266B-R5, SP-266-R5
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