ProSoft Technology MVI56-104S - Manual (Page 147)

Reference MVI56-104S ♦ ControlLogix Platform
User Manual IEC 60870-5-104 Server Communication Module
ProSoft Technology, Inc.
Page 147 of 188
November 18, 2009
The following illustration shows the data transfer method used to move data
between the ControlLogix processor, the MVI56-104S module and the IEC
60870-5-104 network.
All data transferred between the module and the processor over the backplane is
through the input and output images. Ladder logic must be written in the
ControlLogix processor to interface the input and output image data with data
defined in the Controller Tags. All data used by the module is stored in its internal
database. The following illustration shows the layout of the database:
Module’s Internal Database Structure
4000 registers for user data 0
Register Data
3999