Publication 1756-PM004C-EN-P - October 2009 49
Organize Tags Chapter 2
Assign an Indirect Address
If you want an instruction to access different elements in an array, use a tag in
the subscript of the array (an indirect address). By changing the value of the
tag, you change the element of the array that your logic references.
The following table outlines some common uses for an indirect address.
When index equals 1, array[index] points here.
array[0] 4500
array[1] 6000
array[2] 3000
array[3] 2500
When index equals 2, array[index] points here.
To Use a tag in the subscript and
Select a recipe from an array of recipes Enter the number of the recipe in the tag.
Load a specific machine setup from an array
of possible setups
Enter the desired setup in the tag.
Load parameters or states from an array,
one element at a time
A. Perform the required action on the first
element.
B. Use an ADD instruction to increment the
tag value and point to the next element
in the array.
Log error codes
Perform several actions on an array element
and then index to the next element
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