Rosemount 3491 - APPENDIX E Support for HART; Overview; Fully Supported Transmitters; Universal and Common Practice Commands

Reference Manual
00809-0100-4841, Rev. AA
May 2007
Rosemount 3490 Series
www.rosemount.com
Appendix E Support for HART
®
Transmitters
OVERVIEW The Rosemount 3490 Series Control Unit is able to accept digital data from
any HART compatible transmitter. However, the Control Unit is not Device
Descriptor (DD) based, and so will only fully support transmitters that have
been factory programmed into the on-board library.
Support for the Universal and Common Practice commands of all other HART
transmitters is provided in accordance with HART practice.
FULLY SUPPORTED
TRANSMITTERS
Fully supported transmitters, where all parameters of the transmitter are
accessible for reading and writing by the 3490 Series Control Unit:
• Rosemount 3100 Series transmitter Model 3102.
• Rosemount 3100 Series transmitter Model 3105.
UNIVERSAL AND
COMMON PRACTICE
COMMANDS
The table (below) shows the supported Universal and Common Practice
commands for all HART transmitters.
Universal Commands • #0 Read unique identifier.
• #1 Read primary variable.
• #2 Read loop current and percent of range.
• #3 Read dynamic variables and loop current.
• #6 Write polling address.
• #11 Read unique identifier.
• #12 Read message.
• #13 Read tag, descriptor, date.
• #14 Read primary variable transducer information.
• #15 Read device information.
• #16 Read final assembly number.
• #17 Write message.
• #18 Write tag, descriptor, date.
• #19 Write final assembly number.