ProSoft Technology MVI69-FLN - Manual (Page 33)

Start Here MVI69-FLN ♦ CompactLogix Platform
FA Control Network Communication Module
ProSoft Technology, Inc. Page 33 of 137
November 3, 2008
Without Map Feature
The data mapping feature allows you to select data sections associated to each
slave, and select these to be mapped (in any order) into a virtual backplane map
area. This virtual area will be copied to the processor (instead of the entire
common memory area).
This feature allows the module to copy only specific data required for the
application, as shown in the following illustration. Unused data blocks are not
required to be copied:
With Map Feature
Instead of copying six blocks, the module only copies two blocks to send the data
associated to all four nodes. You would also re-configure the portion of the
Virtual BP Map area to be copied to the processor as follows:
BP Area 2 Top : 0 #0...8191 top address for area 2
BP Area 2 Size : 480 #0...8192 area 2 data size in words