30
Reference Manual
00809-0100-4248, Rev CA
May 2017
5.1.2
Enabling the LCD continuous operation feature
The Rosemount
™
705 Wireless Totalizing Transmitter has the ability to keep the LCD always on for local
indication of the total volume and average flow for the attached output device. Power module life will be
reduced when operating in this mode. For example, at a one minute update rates the power module life
would be reduced from a 10 year life to an estimated eight year life. More information on the power
module life impact for various update rates can be found at
Emerson.com/Rosemount/Power-Module-Life-Estimator
Enabling continuous LCD updates
AMS
™
Device Manager
1. Connect the Rosemount 705 Transmitter to the HART
®
Communicator and access the Rosemount
705 DD.
2. Double click on the
Rosemount 705
icon and select C
onfigure>Guided Setup> Configure Device Display
Through the handheld
1. Connect the Rosemount 705 Transmitter to the HART Handheld device.
2. Fast keys
2, 1, 5
(
Configure>Manual Setup> Display> Display Mode
)
5.2
Determining device health
In addition, system considerations must be observed to ensure the device is still connected to the
wireless network and reporting values. On an Emerson Smart Wireless Gateway, this can be done by
referring to the parameter: PV_HEALTHY. The PV_HEALTHY has a “True” state when the device is on the
network and its updates are current, not late or stale, and the PV value is functioning properly. A “False”
state of PV_HEALTHY means the device is either off of the network, the data updates are not current, or
there is an issue measuring PV. In the case of a “False” state of PV_HEALTHY, it is recommended to
assume the device is not connected to the network and to take appropriate action.
5.3
Interpreting LCD screen messages
The transmitted data may not match data displayed on LCD display due to differences in update rate and
screen refresh rate.
5.3.1
Startup screen sequence
The following screens will display when the power module is first connected to the Rosemount 705
Transmitter.
All segments On
: used to visually determine if there are any bad
segments on the LCD display
X X X X X
X X X X x x x
x x x x x x
Содержание Rosemount 705
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