Rockwell Automation 283A ArmorStart with ArmorPoint Backplane - Getting Started - Manual (Page 17)

Publication 283A-QS001C-EN-P - July 2006
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Shown below is the array size that will also need to be changed to match the
Armor_Start_System.Max_Devices value.
Figure 12 System Array Size
Armor_Start_System.Max_Parameters defaults to 262, because the
maximum number of parameters in any existing ArmorStart product is 262
or less. This amount can be easily be changed, and doing so will also
proportionally change the size of the System Array structure and the Logix
memory that holds it. Shown below is the array size that will also need to
be changed to be 1 greater than the
Armor_Start_System.Max_Parameters value. This is because the
parameters are stored by parameter number, and since there is no parameter
0, that storage location is unused.
Figure 13 Array Size Parameter
Armor_Start_System.Num_Devices defaults to zero and is defined as the
total number of ArmorStart products connected to the control system that
need to be configured. It is important that this value be set before the
configuration routine is executed.
It is to the users best advantage to trim the structures down to the minimum
values that match their system because this will save a considerable amount
of Logix processor memory. However, some room should be left in the
structures to handle any future additions of ArmorStart devices to the
system.