ProSoft Technology MVI71-MCM - Manual (Page 85)

Reference MVI71-MCM ♦ PLC Platform
Modbus Communication Module
ProSoft Technology, Inc. Page 85 of 111
December 28, 2007
5.4 MVI71-MCM Database Definition
This section contains a listing of the internal database of the MVI71-MCM
module. This information can be used to interface other devices to the data
contained in the module.
Register Range Modbus Low Modbus High Content Size
0 to 4999 40001 45000 User Data 5000
5000 to 5006 45001 45007 Backplane Configuration 10
5010 to 5039 45011 45040 Port 1 Setup 30
5040 to 5069 45041 45070 Port 2 Setup 30
5200 to 6199 45901 46900 Port 1 Commands 1000
6400 to 7399 46401 47400 Port 2 Commands 1000
7600 to 7632 47601 47633 Misc. Status Data 33
7800 to 7999 47801 4800 Command Control 200
The User Data area holds data collected from other nodes on the network
(master read commands) or data received from the processor (write blocks).
Additionally, this data area is used as a data source for the processor (read
blocks) or other nodes on the network (write commands).
Detailed definition of the miscellaneous status data area can be found in MVI71-
MCM Status Data Definition (page 85).
Definition of the configuration data areas can be found in the data definition
section of this document and in MVI71-MCM Configuration Data Definition (page
87).
MVI71-MCM Command Error Codes (page 94) contains a discussion of the
command control section of the database.
Configuration Error Codes (page 95) contains a table of Configuration Error
Codes.
5.5 MVI71-MCM Status Data Definition
This section contains a description of the data contained in the status data block.
This data is transferred from the module to the processor either through a BTR
block -1 (block transfer interface) or directly into the configuration file (side-
connect interface).
Offset Register Content Description
0 7600 Program Scan
Count This value is incremented each time a complete
program cycle occurs in the module.
1 to 2 7601 to 7602 Product Code These two registers contain the product code of
"DFCM"
3 to 4 7603 to 7604 Product Version These two registers contain the product version
for the current running software.
5 to 6 7605 to 7606 Operating
System These two registers contain the month and year
values for the program operating system.