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Reference Manual
00809-0100-4811, Rev DA
Section 4: Basic Configuration/Start-Up
January 2015
Basic Configuration/Start-Up
4.7 Special functions
4.7.1 Tri-Loop
™
The Rosemount 333 HART Tri-Loop HART-to-Analog Signal Converter is capable of converting a
digital HART burst signal into three additional 4-20 mA analog signals.
To set the Rosemount 3300 Series Transmitter up for the HART Tri-Loop, do the following:
1. Make sure the Rosemount 3300 Series Transmitter is properly configured.
2. If RCT is used for the Rosemount 3300 Series setup, it is recommended that the receive
buffer and transfer buffer for the selected COM port are adjusted as described below in
section To set the COM port buffers on page 89. Otherwise, Burst Mode cannot be
turned off by RCT (for further information on other options for turning off the Burst
Mode see To turn off the Burst Mode on page 89).
3. Assign transmitter variables primary variable, secondary variable etc.
HART command [1,1,1,1].
RCT: Setup > Output tab.
4. Configure variable units: length, volume, and temperature.
HART command [1,3,2,1-3].
RCT: Setup > Basics tab.
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