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Configuration
November 2016
3.5
Additional configuration
The following items are considered optional and may be configured as needed. Refer to
page 39
3.5.1
Local display
Fast Keys
A local display is available as an orderable option on the Rosemount 3051S ERS Primary Transmitter. The
display will show a 0–100% scaled bar graph, the selected measurements from
diagnostic or error messages. At least one parameter from
item is selected, the display will scroll through the selected parameters, showing each for three seconds.
Table 3-3. Available Parameters for Local Display
3.5.2
Burst mode
Fast Keys
When configured for burst mode, ERS provides faster digital communication from the ERS System to the
control system by eliminating the time required for the control system to request information from the
ERS System.
When in burst mode, the ERS System will continue to output a 4–20 mA 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 (process variables in engineering units, primary variable in
percent of span, and the analog output reading), and does not affect the way other transmitter data is
accessed.
Access to information that is not burst can be obtained through the normal poll/response method of
HART communication. A Field Communicator, AMS Device Manager, or the control system may request
any of the information that is normally available while the ERS System is in burst mode.
Burst mode configuration
To have the ERS System configured to communicate in burst mode:
1. Set the Burst Mode parameter to "on."
2. Select a Burst Option from
communicated through burst mode.
Table 3-4. Burst Command Options
HART command
30
for the full Field Communicator menu tree.
2, 1, 3
Differential pressure
P
pressure
HI
P
pressure
LO
2, 2, 5, 3
Burst option
1
2
% range/current
3
Dyn vars/current
9
Devices vars w/status
33
Device variables
P
module temperature
HI
P
module temperature
LO
Scaled variable
Table 3-4
below. This parameter determines what information is
Description
PV
Primary Variable
Percent of range and mA output
All process variables and mA output
Burst variables and status information
Burst variables
Reference Manual
00809-0100-4804, Rev CB
Table
Table 3-3
must be selected. If more than one
Output (% of range)
N/A
N/A
Figure 3-7 on
3-3, and any
Configuration
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