ProSoft Technology MVI56-AFC - Manual (Page 161)

MVI56-AFC ♦ ControlLogix Platform MVI56-AFC Backplane Communication
Liquid and Gas Flow Computer User Manual
ProSoft Technology, Inc. Page 161 of 316
February 25, 2011
Input Block Array
Size: 250 elements Data type: Integer (2 bytes)
The AFC consumes the process variable inputs received in the OBAs and
returns calculated variables such as process flowrate, accumulated product
volume, and so on. by populating the IBA and returning it to the ControlLogix
processor via the backplane. This array is made up of a block of 250 contiguous
integer elements.
Element Attribute
Local 3.I (slot number) Local.I.Data[0]
Local.I.Data[1]
Local.I.Data[2]
………………..
Local.I.Data[n]
………………..
Local.I.Data[249]
The following section describes in detail how the MVI56-AFC module facilitates
the two-way data transfer by conveniently partitioning the Input/Output blocks
into smaller function blocks to allow flexibility in designing and implementing the
logic to support the AFC module.