Rockwell Automation Publication 1756-RM003N-EN-P - October 2011 383
Array (File)/Misc. Instructions (FAL, FSC, COP, CPS, FLL, AVE, SRT, STD, SIZE) Chapter 8
Example 1: Average array_dint, which is DINT[4,5].
Relay Ladder
Structured Text
SIZE(array_dint,0,length);
sum := 0;
FOR position = 0 TO (length-1) DO
sum := sum + array_dint[position];
END_FOR;
dint_ave := sum / length;
Dimension 1
Dimension 0
0
20 19 18 17 16
15 14 13 12 11
10 9 8 7 6
54321
1
2
3
01234
AVE
19 14 9 4+++
4
-------------------------------------
46
4
------
11.5===
dint_ave = 12
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