ProSoft Technology MVI69-ADM - Manual (Page 46)

Understanding the MVI-ADM API MVI-ADM ♦ 'C' Programmable
Developer's Guide 'C' Programmable Application Development Module
Page 46 of 342 ProSoft Technology, Inc.
February 20, 2013
Module Configuration Data Transfer Block (9000)
When the module performs a restart operation, it will request configuration
information from the PLC processor. This data is transferred to the module in
specially formatted write blocks (output image). The module will poll for each
block by setting the required write block number in a read block (input image).
The module will request all command blocks, according to the number of
commands configured by the user for each Master port.
This block sends general configuration information from the processor to the
module. The data is transferred in a block with an identification code of 9000.
The structure of the block is displayed in the following table.
Write Block
Offset Description Length
0 9000 1
1 to 6 Backplane Setup 6
7 to 31 Port 1 Configuration 25
32 to 56 Port 2 Configuration 25
57 to 63 Spare 7
The read block used to request the configuration has the following structure:
Read Block
Offset Description Length
0 -2 1
1 9000 1
2 Module Configuration Errors 1
3 Port 1 Configuration Errors 1
4 Port 2 Configuration Errors 1
5 to 63 Spare 59
If there are any errors in the configuration, the bit associated with the error will be
set in one of the three configuration error words. The error must be corrected
before the module starts operating.
Special Function Blocks
Special Function blocks are special blocks used to control the module or request
special data from the module. The current version of the software supports three
special function blocks: write configuration, warm boot and cold boot.