Rockwell Automation AutoMax Enhanced Ladder Language Reference Manual User Manual
Page 223
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When EN transitions from false to true, the instruction prepares to carry out the function
specified in Operation by latching (buffering) all parameters. If you have programmed
the array instruction to operate on the array elements over multiple program scans, the
first scan sets up the operation. Then, the operation is performed as programmed over
a series of scans until the operation is done.
As long as EN remains true, it completes the operation on the specific lengths (Length1
and Length2) of the variables in In1 and In2, operating on the number of elements
specified in Elems/Scan with each program scan.
Index acts as a marker indicating the last element of the array that was operated on
during the last scan.
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