Device Setup; Hart ® Protocol; Units; Analog Output - Emerson Rosemount 5408 Reference Manual

Reference Manual
00809-0100-4408, Rev BA
C.2

Device setup

C.2.1 HART
HART/polling address
The address range is 0 to 63. The transmitter operates in either standard mode with a 4–20 mA output
signal or in multidrop. When the transmitter is in multi-drop mode, the current output is fixed to 4 mA.
Burst mode
When set to burst mode, the transmitter regularly sends out messages instead of waiting for the host to
request it.
Both the transmitter and host must be configured to operate in burst mode. Almost all HART host
systems today are designed to communicate in poll/response mode, not burst mode. However, the
Rosemount 333 HART Tri-Loop
Rosemount 333 HART Tri-Loop™" on page
Variable mapping
Up to four transmitter variables can be assigned for the HART protocol. The transmitter outputs a 4-20
mA signal proportional to the primary variable. Additional variables are available through the HART
digital signal. See
Damping value
This parameter defines how fast the transmitter reacts to a change of the level value (step response). The
default value is 2 seconds.
A high value makes the level reading steady, while a low value allows the transmitter to respond to rapid
level changes (but the presented level value may be less steady).
Percent of range auxiliary
Set this parameter to output the percent of range for another transmitter variable (in addition to the
primary variable).
100% auxiliary
Value corresponding to 100% range of variable selected for percent of range auxiliary.
0% auxiliary
Value corresponding to 0% range of variable selected for percent of range auxiliary.
C.2.2

Units

The units for length, volume, temperature, and level rates are selectable. All configuration parameters
and transmitter variables will be expressed in these units. For information on available units of measure,
see "Output units" on page
C.2.3

Analog output

The output source (primary variable), range values, and alarm mode are specified for the analog output.
Configuration Parameters
®
protocol
™
requires burst mode communication (see section
Table A-2 on page 138
138.
74).
for a list of available transmitter variables.
Configuration Parameters
November 2017
"Use with the
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