Emerson Rosemount 644 HART, Reference Manual

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40
Reference Manual
00809-0100-4728, Rev MB
Configuration
July 2016
Configuration
2.12.1 Changing a transmitter address
To activate multidrop communication, the transmitter poll address must be assigned a number from 1
to 15 for HART Revision 5, and 1-63 for HART Revision 7. Each transmitter in a multidropped loop must
have a unique poll address.
Using a Field Communicator
Using AMS Device Manager
1. Right click on the device and select Configuration Properties from the menu.
2. In HART Revision 5 mode:
a. In the HART tab, enter poll address into the Polling Address box, click Apply .
3. In HART Revision 7 mode:
a. In the HART tab, click the Change Polling Address button.
2.13 Using the transmitter with the HART Tri-Loop
To prepare the Rosemount 644 Transmitter with dual-sensor option for use with a Rosemount 333 HART
Tri-Loop, the transmitter must be configured to Burst Mode and the process variable output order must
be set. In Burst Mode, the transmitter provides digital information for the four process variables to the
HART Tri-Loop. The HART Tri-Loop divides the signal into separate 4–20 mA loops for up to three of the
following choices:

Primary Variable (PV)

Secondary Variable (SV)

Tertiary Variable (QV)

Quaternary Variable (QV)
When using the Rosemount 644 Transmitter with dual-sensor option in conjunction with the HART
Tri-Loop, consider the configuration of the differential, average, first good temperatures, Sensor Drift
Alert, and Hot Backup features (if applicable).
Note
The procedures are to be used when the sensors and transmitters are connected, powered, and
functioning properly. Also, a Field Communicator must be connected and communicating to the
transmitter control loop. For communicator usage instructions, see
“Configuring with a Field
Communicator” on page 10 .
From the HOME screen, enter the Fast Key sequence
Device Dashboard Fast Keys
1, 2, 1