Simulate Device Variables; Configuring Burst Mode - Emerson Rosemount 2088 Reference Manual

Reference Manual
00809-0100-4108, Rev BA
Figure 2-14. Performing an analog loop test using an LOI
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2.9.3

Simulate device variables

It is possible to temporarily set the Pressure, Sensor Temperature, or Scaled Variable to a
user-defined fixed value for testing purposes. Once the simulated variable method is left, the
process variable will be automatically returned to a live measurement. Simulate device variables
is only available in HART Revision 7 mode.
Simulate digital signal with a field communicator
From the HOME screen, enter the Fast Key sequence
Device Dashboard Fast Keys
Simulate digital signal with AMS Device Manager
1. Right click on the device and select Service Tools.
2. Click Simulate.
3. Under Device Variables select a digital value to simulate.
a.
b. Sensor Temperature
c.
4. Follow the screen prompts to simulate selected digital value.
2.10

Configuring burst mode

Burst mode is compatible with the analog signal. Because the HART protocol features
simultaneous digital and analog data transmission, the analog value can drive other equipment
in the loop while the control system is receiving the digital information. Burst mode applies only
to the transmission of dynamic data (pressure and temperature in engineering units, pressure in
percent of range, Scaled Variable, and/or analog output), and does not affect the way other
transmitter data is accessed. However, when activated, bust mode can slow down
communication of non-dynamic data to the host by 50%.
Access to information other than dynamic transmitter data is obtained through the normal
poll/response method of HART communication. A field communicator, AMS Device Manager, or
Configuration
Pressure
Scaled Variable
LOOP TEST
(1V)
SET 4MA
(5V)
SET 20MA
SET CUSTOM
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3, 5
Section 2: Configuration
March 2014
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