Allen-Bradley Logix5000

Publication 1756-PM004C-EN-P - October 2009 35
Organize Tags Chapter 2
The following example compares a structure to an array.
This is a tag that uses the Timer structure (data type).
Tag Name Data Type
Timer_1
TIMER
Timer_1.PRE
DINT
Timer_1.ACC
DINT
Timer_1.EN
BOOL
Timer_1.TT
BOOL
Timer_1.DN
BOOL
−
+
+
This is a tag that uses an array of the Timer data type.
Tag Name Data Type
Timers
TIMER[3]
Timer[0]
TIMER
Timer[1]
TIMER
Timer[2]
TIMER
−
+
+
+
EXAMPLE
Single-dimension array
In this example, a single timer instruction times the duration of several steps. Each step requires a
different preset value. Because all the values are the same data type (DINTs) an array is used.
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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