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Rockwell Automation AutoMax Enhanced Ladder Language Reference Manual User Manual

Page 223

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10Ć21

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.