Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 213)

Publication 1758-UM002D-EN-P - October 2010
DataSite Flow Configuration Utility (DS FloConfig) 213
Registers Used in HART Commands
The following table lists the number of registers used in each HART command
for the four register types, namely Send, Return, Unit and HART state.
If the number of registers is 0 in any command, you do not have to enter a
register address.
The register range is 40003…49999 for 1758-RTU controllers, and
40003…47999 for 1758-FLO controllers.
Description of HART Commands
The following table provides a description of each HART command and the
registers that it uses.
Number of registers used in each HART command
Command Description Number of registers
Send register Return register Unit register HART state
register
0 Read Unique Identifier 0 10 0 2
1 Read Primary Variable 0 2 1 2
2 Read P. V. Current And Percent Of Range 0 4 0 2
3 Read Dynamic Variable And P. V. Current 0 10 4 2
15 Read Transmitter Variables 0 10 0 2
33 Read Primary Variable Output Information 4 12 4 2
35 Write Primary Variable Range Values 9 0 0 2
38 Reset Configuration Changed Flag 0 0 0 2
40 Enter/Exit Fixed Primary Variable Current
Mode 4 0 0 2
44 Write Primary Variable Units 1 0 0 2
48 Read additional Transmitter Status 0 13 0 2
54 Read Transmitter Variable Information 1 10 2 2
59 Write Number Of Response Preambles 1 0 0 2
Description of HART commands
Command 0
Purpose Read the equipment identifier.
This command must be configured for each HART device in order
for the other commands to work.
Send register Not used