9907-165 WOODWARD

336A5102P1 RESISTOR 66 OHM
336A5102P2 RESISTOR 25 OHM
336A5102P3 RESISTOR 14 OHM
336A5115G1 POWER SUPPLY
336A5116P250 25 OZ ANTIFRETTING
336A5116P30 30CC ANTIFRETTING LU
336A5199AHP1 PMC610 ETHERNET CTLR 10/100TX
336A5199AKP1 1 ARCNET CHANNEL PWA
336A5199ALP2 ARCNET CONTROLLER PWA
336A5199ANP1 UNABLE TO PROVIDE
336A5199ANP2 ADL PC104+CARD 128MB SDRAM

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描述

对用户存储容量只能作粗略的估算。在仅对开关量进行控制的系统中,可以用输入总点数乘10字/点+输出总点数乘5字/点来估算;计数器/定时器按(3~5)字/个估算;有运算处理时按(5~10)字/量估算;在有模拟量输入/输出的系统中,可以按每输入/(或输出)一路模拟量约需(80~100)字左右的存储容量来估算;有通信处理时按每个接口200字以上的数量粗略估算。最后,一般按估算容量的50~100%留有裕量。对缺乏经验的设计者,选择容量时留有裕量要大些。

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