ProSoft Technology ControlLogix inRAx MVI56E-MNETR User Manual page 114

Reference
User Manual
Module's Internal Database Structure
5000 registers for user data
Data contained in this database is paged through the input and output images by
coordination of the ControlLogix ladder logic and the MVI56E-MNETR module's
program. Up to 40 words of data can be transferred from the module to the
processor at a time. Up to 40 words of data can be transferred from the
processor to the module. Each image has a defined structure depending on the
data content and the function of the data transfer. The module uses the following
block numbers:
Block Range
-1
0
1 to 125
1000 to 1124
2000
5001 to 5006
9956
9957
9958
9959
9960
9961
9970
9996
9998
9999
These block identification codes can be broken down into a few groups: Normal
data transfer blocks (-1 to 125), Initialization blocks (1000 to 1124), Command
control blocks (2000, 5001 to 5006, 9998 and 9999) and pass-through function
blocks (9956 to 9961, 9970 and 9996).
Normal Data Transfer Blocks
Normal data transfer includes the paging of user data from the module's internal
database (registers 0 to 4999), as well as paging of status data. These data are
transferred through read (input image) and write (output image) blocks.
The following topics describe the function and structure of each block.
Page 114 of 175
Register Data
Descriptions
Status block
Status block
Read or write data
Output Initialization Blocks
Event Command Block
Command Control
Formatted pass-through block from function 6 or 16 with word data.
Formatted pass-through block from function 6 or 16 with floating-point data.
Formatted pass-through block from function 5.
Formatted pass-through block from function 15.
Formatted pass-through block from function 22.
Formatted pass-through block from function 23.
Function 99 indication block.
Unformatted Pass-through block with raw Modbus message.
Warm-boot control block
Cold-boot control block
MVI56E-MNETR ♦ ControlLogix Platform
Modbus TCP/IP Interface Module with Reduced Data Block
0
4999
ProSoft Technology, Inc.
June 14, 2011