Appendix
B-1
B
Model 275
HART Communicator
OVERVIEW
This appendix describes the Model 275 HART Communicator keypad,
connections, menu structure, and fast-key sequence features, and it
provides an introduction to using the communicator in connection with
the Model 3144 and 3244MV transmitters.
The Model 275 HART Communicator Product Manual (Rosemount
publication no. 00809-0100-4275) provides more detailed instructions
on the use and features of the Model 275. The brief summary of
information contained in this appendix will familiarize you with the
communicator but is not meant to replace the actual product manual.
NOTE
You may need to upgrade the software in your Model 275 HART
Communicator in order to take advantage of the additional features of
the improved transmitters (field device revision 2). To determine
whether or not you need to upgrade, turn on your communicator, select
4 Utility
, then
5 Simulation
. Choose “Rosemount” from the list of
manufacturers and “3244 Temp” (“3144 Temp” if applicable) from the
list of models. If the
Fld Dev Rev
choices include “Dev v2, DD v1,” then
you do not need to upgrade. If the only choice is “Dev v1” (with any DD
version), then you should upgrade your communicator.
If you initiate communication with an improved transmitter using a
communicator that has a previous version of the transmitter device
descriptors (DDs), the communicator will display the following
message:
NOTICE: Upgrade 275 software to access new XMTR functions.
Continue with old description?
If you select
YES
, the communicator will communicate properly with
the transmitter using the existing transmitter DDs. However, software
features added since the revision of the DDs in the communicator will
not be accessible. If you select
NO
, the communicator will default to a
generic transmitter functionality.
If you select
YES
when the transmitter is already configured to utilize
the new features of the improved transmitters, such as Sensor Average
or one of the added sensor input types (Pt 100
α =
0.003916 or Pt 1000
α = 0.00385)
, you will experience trouble communicating with the
transmitter. You will be prompted to turn the communicator off. To keep
this from happening, either upgrade your communicator to the latest
DD or answer
NO
to the question above and default to the generic
transmitter functionality.
To see a list of enhancements included in the improved transmitters,
see “Revision Differences Summary” on page A-1.