ProSoft Technology MVI56E-MNETC User Manual page 105

MVI56E-MNETC/MNETCXT ♦ ControlLogix Platform
Modbus TCP/IP Client Enhanced Communication Module - Client/Server
Data contained in this database is transferred in blocks, or pages, using the input
and output images. ControlLogix ladder logic and the MVI56E-
MNETC/MNETCXT module's program work together to coordinate these block
transfers. Up to 200 words of data can be transferred from the module to the
processor (read block - input image) or from the processor to the module (write
block - output image) in each block transfer. The block structure of each block
type depends on the data content and function of the block. The module uses the
following block identification numbers:
Block ID Range
-1
0
1 to 50
1000 to 1049
2000 to 2029
3000 to 3029
5001 to 5016
9990
9991
9998
9999
3100
4000 to 4029
4100 to 4129
4200 to 4229
5001 to 5016
9956
9957
9958
9959
9960
9961
9970
9990
9991
9996
9997
9998
ProSoft Technology, Inc.
September 20, 2018
Descriptions
Null block
For firmware versions earlier than 2.05, this is a null block.
For firmware versions 2.05 and newer, block 0 contains the same data as block 1. This
feature enhances performance, especially when using less than 200 words of
read/write data:

If Read Register Count in the module configuration file is set > 200 words, Block
ID 0 is not used.

If Read Register Count in the module configuration file is set >0 and <= 200
words, Block ID contains the same data as block 1 (both read data and status
data).
Read or Write blocks
Initialize Output Data blocks
Event Command blocks
Client Status blocks
Command Control blocks
Set Module IP Address block
Get Module IP Address block
Warm-boot block
Cold-boot block
Server Status block
Event Sequence Command blocks
Event Sequence Command Error Report blocks
Event Sequence Command Count Status blocks
Command Control blocks
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
Set Module IP Address block
Get Module IP Address block
Unformatted Pass-through block with raw Modbus message
Reset Module Status Data block
Warm-boot block
Reference
User Manual
Page 105 of 172