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ProSoft Technology MVI69-FLN User Manual

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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