ProSoft Technology MVI69-HART - Manual (Page 91)

MVI69-HART ♦ CompactLogix Platform Reference
HART Multi-drop Master Communication Module User Manual
ProSoft Technology, Inc. Page 91 of 169
March 29, 2012
If Block Transfer Size = 240
Write Block
These blocks of data transfer information from the CompactLogix or MicroLogix
processor to the module. The structure of the output image used to transfer this
data is shown below:
Offset Description Length
0 Write Block ID 1
1 to n Write Data n
n=60, 120, or 240 depending on the Block Transfer Size parameter (refer to the configuration file).
The Write Block ID is an index value used to determine the location in the
module’s database where the data will be placed. .
5.2.4 Command Control Blocks
Block identification codes greater than 9900 are utilized to perform special
functions in the module. Each control block recognized and used by the module
is defined in the following topics.