HART FUNCTIONALITY
OVERVIEW This section provides instruction on basic HART functionality in the 475
Field Communicator. It is based on the operation of the HART
Application version 6.1.
SAFETY MESSAGES Procedures and instructions in this section may require special
precautions to ensure the safety of the personnel performing the
operation. Information that raises potential safety issues is indicated by
a warning symbol ( ). Refer to the safety messages before
performing an operation preceded by this symbol. Other warning
messages can be found in the “Troubleshooting” section of this
manual.
If you choose to ignore all field device status messages, every
message, regardless of severity, is ignored until the specified
number of messages is reached. See “Ignoring status messages”
on page 55 for more information.
Voltage measurements are for reference purposes only. Do not
make critical process control decisions based on these
measurements.
WARNING
WARNING
40 HART functionality
BASIC FEATURES AND
FUNCTIONS
HART Application
functionality
The HART Application lets you communicate with and configure HART
devices that are connected to the 475 Field Communicator. You can
also create and edit configurations and run diagnostics.
Using a fast key sequence A fast key sequence is a sequence of numerical button presses,
corresponding to the menu options that lead you to a given task. See
your device documentation for fast key sequence options.
STARTING THE HART
APPLICATION
To start the HART Application:
1.Press and hold the Power key until the green light on that key blinks
to turn on the 475 Field Communicator.
2.Tap from the Field Communicator Main Menu. If a live HART
device is connected to the 475 Field Communicator, the HART
Application Online menu appears automatically. If a device is not
connected, the HART Application main menu appears after a few
seconds. See Figure 3-1.
To return to the Field Communicator Main Menu, press the left arrow
key on the keypad or tap the back arrow on the window. Select Yes
when prompted if you want to exit the HART Application.
From the HART Application main menu, you can choose Offline,
Online, Utility, or HART Diagnostics functions. The rest of this
section guides you through the HART Application menus and
functions.
Figure 3-1. HART Application Main Menu
HART functionality 41
WORKING WITH OFFLINE
CONFIGURATIONS
The Offline menu lets you create offline configurations and view and
change configurations stored in the 475 Field Communicator.
There are two types of HART configurations: device configurations and
user configurations. A device configuration is created from a
connected, online HART device. A user configuration is created offline
or transferred to a 475 Field Communicator from another program.
Editing a device configuration within the 475 Field Communicator
changes it to a user configuration.
The concept of partial or standard configurations does not apply to the
475 Field Communicator. All configurations are full configurations.
Creating a new
configuration
Creating a new configuration lets you create a user configuration for a
specific device type and revision.
To create a new HART configuration while working offline:
1.From the HART Application main menu, double-tap Offline.
2.Double-tap New Configuration. The manufacturer names of the
installed device descriptions are listed.
3.Double-tap the desired manufacturer to expand the list. The models
available for the manufacturer are listed.
4.Double-tap the desired device model to expand the list. The device
revisions available for the selected device model are listed.
5.Double-tap the desired device revision.
6.If a warning appears, thoroughly read the warning, tap CONT to
accept the warning and proceed, or tap EXIT.
7.Mark (select) the configurable variables you want sent to the device;
unmarked variables are not included when the configuration is
transferred to a device. Double-tap Mark all | OK to have all
variables marked. Double-tap Unmark all | OK to clear the marks
from all variables. If a variable cannot be marked, an error message
appears.
To mark and edit variables individually:
a.Double-tap Edit individually.
b.Scroll through the list of variables and select the variable you want
to mark or edit.
c.To change the value for the selected variable, tap EDIT, change the
value, and tap ENTER. A “*” symbol appears next to the variable
name and the value is highlighted yellow to indicate the change
has not been saved.
To mark the selected variable, tap MARK. A “+” symbol appears
next to the value.
d.Repeat these steps for other variables as necessary and tap EXIT
when you are finished.
8.To save the configuration, double-tap Save as. (The SAVE button
brings you to the Save as menu.)
42 HART functionality
a.To change the location where the configuration is saved,
double-tap Location, select an option, and tap ENTER.
b.To specify a name for the configuration, double-tap Name, enter
the name, and tap ENTER.
c.Tap SAVE.
Opening a saved
configuration
A saved configuration lets you edit, copy, send, delete, or rename it.
You can also compare it to other saved configurations.
To open a saved configuration:
1.From the HART Application main menu, double-tap Offline.
2.Double-tap Saved Configuration.
3.Double-tap the storage location where you saved the configuration.
The FILTR button opens a menu that provides both sort and tag filter
options. These options let you customize your view of saved
configurations.
• The Sort option lets you group and display configurations
according to your choice of configuration name, device tag, or
device descriptor.
• The Filter option lets you limit which configurations are displayed
by picking specific characters from the configuration name, device
tag, or device descriptor.
When setting up a filter, you can use two special characters: the
period (.) and the asterisk (*). The period replaces a single
character of any value. The asterisk replaces a string of
characters.
For example, if you want to list all configurations that have a name
of P - 001 to P - 300, enter “P - *” in the filter. If you want to list
configurations with a name that begins P - 0 and ends with a 7, set
the filter to “P - 0.7”. The period will replace only one character
between the 0 and 7.
The XPAND button lets you view the configuration name, device tag,
manufacturer, device type, device revision, descriptor, and the
configuration type. Tap CMPRS to return to the previous window.
4.Double-tap the desired configuration to open the Saved
Configuration menu.
Editing a saved configuration
The Edit option lets you edit a saved configuration while working
offline.
To edit a saved configuration:
1.Open a saved configuration. See “Opening a saved configuration”.
2.Double-tap Edit from the Saved Configuration menu.
3.If a warning appears, thoroughly read the warning, tap CONT to
accept the warning and proceed, or tap EXIT to end this operation.
4.Mark (select) the configurable variables you want sent to the device;
unmarked variables are not included when the configuration is
transferred to a device. Double-tap Mark all | OK to have all
HART functionality 43
variables marked. Double-tap Unmark all | OK to clear the marks
from all variables.
To mark and edit variables individually:
a.Double-tap Edit individually.
b.Scroll through the list of variables and select the variable you want
to mark or edit. To change the value for the selected variable, tap
EDIT, change the value, and tap ENTER. A “*” symbol appears
next to the variable name and the value is highlighted yellow to
indicate the change has not been saved.To mark the selected
variable, tap MARK. A “+” symbol appears next to the value.
c.Repeat these steps for other variables as necessary.
d.Tap Exit.
5.Tap SAVE.
Copying a