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MILLER ELECTRIC 183155A USPP 183155A
Steve Miller IP Signed Autographed Electric Guitar PSA
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Miller CP-250TS 250 AMP, Electric welder weld power source Works. with cart
*NEW* Miller Electric PC Control Circuit Board 183047 *NEW*
MILLER ELECTRIC 083481 PC BOARD
Fender Squier Standard Stratocaster Miller Genuine Draft Promo Guitar hardtail
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Antique Miller Oil Lamp Converted to Electric-Pink Stained/Slag Glass AMAZING!
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New Miller Electric 3 Phase Running Gear 042886 & Cable Holder 043055
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Intertherm Nordyne Miller Furnace Electric Heating Element 20 KW 917173 917173B
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Intertherm Nordyne Miller Package Furnace Electric Heating Element 15KW 904414
Vintage Miller Beer Sign lighted with clock from 1960's electric
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NEW!! NICOLE MILLER RUCHED STRPLS DRS IN SILVER & ELECTRIC BLUE ! (RETAIL $430)
由于在984LL中没有32位数的运算功能块直接使用,原来考虑使用的“EMTH”块只允许操作数为32位,而结果不能超出65536,所以无法直接应用。
在某项目中,编码器的数值变化范围为126000左右,超出65536,所以考虑分高低位来进行计算,即通过判断编码器实际值与初始值的高位是相等、不等分别进行计算,计算结果可以满足实际需要。
以左油缸行程为例说明计算过程,油缸全收回时,编码器数值为33232271(对应油缸行程为9403mm),全伸出时编码器数值为33106005(对应油缸行程为0mm),即每1mm行程对应13.428个编码器数值,假如计数器的寄存器为%300021(DINT),初始值存在寄存器%400323(DINT)中,那么油缸行程left可以由以下计算获得:
If %300022=%4000324 then
Left = (%300021-%400323)/13.428=(%300021-%400323)*1000/13428;
If %300022>%4000324 then
Left = [(%300021-%400323)+(%300022-%4000324)*65536]/13.428
=(%300021-%400323)*1000/13428+(%300022-%4000324)*4880.55
≈(%300022-%4000324)*4880+%300021*1000/13428-%400323*1000/13428
这样就可以通过984LL语言中的16位计算命令获得结果。
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