34 Publication 1756-PM004C-EN-P - October 2009
Chapter 2 Organize Tags
Create an Array
Logix5000 controllers also let you use arrays to organize data.
A subscript (s) identifies each individual element within the array. A subscript
starts at 0 and extends to the number of elements minus 1 (zero based).
Term Definition
Array A tag that contains a block of multiple pieces of data.
• An array is similar to a file.
• Within an array, each individual piece of data is called an element.
• Each element uses the same data type.
• An array tag occupies a contiguous block of memory in the controller, each element in
sequence.
• You can use array and sequencer instructions to manipulate or index through the
elements of an array
• You organize the data into a block of one, two, or three dimensions.
42367
To expand an array and
display its elements, click
the + sign.
To collapse an array and
hide its elements, click
the – sign.
This array contains six
elements of the DINT
data type.
Six DINTs
Elements of
Timer_Presets
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