ProSoft Technology MVI69-FLN - Manual (Page 35)

Start Here MVI69-FLN ♦ CompactLogix Platform
FA Control Network Communication Module
ProSoft Technology, Inc. Page 35 of 137
November 3, 2008
Example 2
This example application requires the MVI69-FLN module to communicate with
two nodes configured as follows:
Node 1
Area 1 Top : 0
Area 1 Size: 150
Area 2 Top : 0
Area 2 Size: 150
Node 2
Area 1 Top : 240
Area 1 Size: 150
Area 2 Top : 240
Area 2 Size: 150
The MVI69-FLN must transfer the following data to the processor:
ƒ Entire node 1 data
ƒ Last 50 words of node 2 data
Without Data Mapping
In order to disable the data mapping, set the Use BP Map Table parameter as N:
Use BP Map Table : N #Use BP mapping (Y=Use maps, N=Don't use maps
(default))
Because the goal is to transfer the entire Node 1 data and the last 50 words for
Node 2 data, the backplane transfer to the processor should be set as follows:
BP Area 1 Top : 0 #0...511 top address for area 1
BP Area 1 Size : 390 #0...512 area 1 data size in words
BP Area 2 Top : 0 #0...8191 top address for area 2
BP Area 2 Size : 390 #0...8192 area 2 data size in words
Therefore, two blocks per each area will be required to transfer the data as
follows:
Read Block ID Area Start Area Offset Last Area Offset
1 1 0 239
2 1 240 389
4 2 0 239
5 2 240 389