Structured Text - Allen-Bradley Logix5000 Reference Manual
1756 controllogix,
1768 compactlogix,
1769 compactlogix,
1789 softlogix,
1794 flexlogix,
powerflex 700s with drivelogix
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Also See for Logix5000:
- Programming manual (92 pages) ,
- User manual (84 pages) ,
- Application book (56 pages)
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Chapter 8
Array (File)/Misc. Instructions (FAL, FSC, COP, CPS, FLL, AVE, SRT, STD, SIZE)
396
Structured Text
SIZE(dint_array,1,length);
sum := 0;
FOR position = 0 TO (length-1) DO
sum := sum + dint_array[position];
END_FOR;
average := sum / length;
sum := 0;
FOR position = 0 TO (length-1) DO
sum := sum + ((dint_array[position] - average)**2);
END_FOR;
real_std := SQRT(sum / (length-1));
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
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