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6.5 DHH805-A settings
Handheld terminal menu features two sections as mentioned
above. The following paragraphs aim to give a clear explanation
of all functions.
6.5.1 Settings
This section contains different functions strictly related to the
DHH805-A that can be scrolled easily by using the up and down
navigation keys. Submenus are:
— Device List: this section contains a list of all the Device
Descriptor files uploaded on the SD card of DHH805-A.
This list is sorted by manufacturer and device type.
— Polling: used to set the address range to be scanned by
the DHH805-A during the first connection. Different
methods are available: address 0, from 1 to 15, from 1 to
63 (maximum address fixed by HART
selecting custom on main polling menu, it is possible to
define an address range different from the standard ones.
— Listening: is the submenu to be used when user wants to
have the DHH805-A communicating with the PC-Tool
(firmware upgrade DD and configuration management).
— Contrast: this submenu allows contrast adjustments by
using the left and right arrow keys. Contrast range goes
from 0 to 100. Once edited, the customized value is stored
and maintained until new parametrization.
— Backlight: by accessing to this submenu, it is possible to
select "backlight behavior" (always enabled, disabled and
on key press) and "backlight level" (from 0 to 3). In order to
navigate through these functions use the up and down
navigation keys, while to adjust the level push the left and
right arrow keys.
— Auto power off: this part of the menu has to be used when
the user wants to set the auto power off of the device.
DHH805-A powers off automatically by itself after 10
minutes from the last activity (communication with USB port
or operation with the keyboard). All unsaved parameter
changes will be discarded.
— Password: by entering this submenu, user can decide
whether to protect the device or not. Password is an
alphanumeric case sensitive string whose maximum length
is 6 characters.
— Log mode: when enabled, this function allows to view on
PC screen the DHH805-A display. To view it, use the
PC-Tool and click on Tools > Display HHT Screen.
— Modem: this function has to be used when user wants the
DHH805-A to be a modem HART
input as an HART
Physical Layer to the output.
®
— DHH805 tag: this entry shows the device DHH805 tag,
useful when making enquiries to ABB.
— Revision: this submenu contains information about
software, hardware and FPGA revision.
— Memory info: by navigating through this submenu, user will
have a clear idea of memory status. Memory info shows the
number of uploaded DDs and configurations, total and
used memory, as well as free space on SD card.
16 OI/DHH805-EN Rev. D | Handheld communicator Model DHH805-A
7), and custom. By
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, transmitting the USB
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— Language: DHH805-A features a multi language menu. By
editing this setting, users can choose between: English,
Italian, German, French and Japanese. By editing this
parameter, the user changes the visualization language of
DD files as well (if one of the above languages is not
supported, English will be used).
— Upgrade: by acting on this entry, it is possible to perform
device upgrade both manually or via PC-Tool (please see
chapter 5 "License upgrade" for further reference).
The following chart shows all of the default factory settings:
Default factory settings
Parameter
Polling
Contrast
Backlight
Auto power off
Language
6.5.2 Communication
Within this submenu, user can navigate the instrument
managing DD files and configurations.
This section can be entered both online and offline.
When online, DHH805-A polls the defined address range
(address 0 by default) and loads the connected instrument DD
file (see figures 10 and 11). User can navigate the instrument
and explore DD structure. In online mode, it is possible to
download and save instrument configurations and send the
existing ones. Configurations will be named and saved with
instrument tag automatically. If the file name is already existing,
user can overwrite it.
In offline mode, the user navigates the SD card where all DD
files are sorted by manufacturer and device type. Within this
section user can edit, create, delete and clone configurations.
6.6 NiMh Battery Considerations
Batteries have a continuous run time with highest backlight
level of about 16 hours. Without backlight, the average
battery life is 100 hours. DHH805-A keeps on working with
empty battery signal for 2 hours.
In order to maximize batteries' life, configure "Auto power off"
and backlight "On key press".
Though the power supply unit (supplied as standard) ensures
the complete charge of the batteries, ABB recommends to
occasionally discharge them completely. This will increase
batteries' performance over the year.
Battery pack needs to be fully charged almost once per year
and it should be removed if DHH805-A remains unused for
long periods.
Keep the battery pack at temperatures below 35°C (95°F).
This will reduce battery auto discharge.
Do not short-circuit batteries.
Apply anti-static precautions when handling the memory card
or replacing the battery pack
6 General operations
Default setting
Address 0
50
On key press - level 2
Disabled
English
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