ProSoft Technology MVI56-104S - Manual (Page 103)

Reference MVI56-104S ♦ ControlLogix Platform
User Manual IEC 60870-5-104 Server Communication Module
ProSoft Technology, Inc.
Page 103 of 188
November 18, 2009
The MVI56-104S contains an internal database of 4000 words. You must
associate the monitor and control points to database addresses in the MVI56-
104S. To configure the points for the MVI56-104S, follow these steps:
1 Calculate the number of monitor and control points for the application.
2 Calculate the MVI56-104S database regions that are required for the
application, based on the number of monitor and control points. Define two
separate regions. Remember that each data type stores a different quantity of
data (for example, M_SP_NA uses one bit, M_ST_NA uses one byte, and so
on).
3 Configure each point within its MVI56-104S database region.
4 Configure the backplane communication between the module and the
processor in order to correctly update both database regions as shown in the
following illustration.
For the MVI56-104S, the control and monitor points are transferred as follows:
All points must be configured in the correct location in the MVI56-104S database
in order to be properly updated from/to the processor, by configuring the control
points and monitor points in separate areas of the MVI56-104S database. The
following illustration shows an example configuration: