GasTech D-Guard2, Operator'S Manual

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D-Guard
2
45
13.3. Digital Data Configuration
D-Guard
2
data communication uses a ‘Bell 202’ FSK type system that is compliant with the HART Communication
Foundation protocol. Data is transmitted and received over the detectors 2-wire connections. The protocol used is
compatible with version 7.0 of the protocol.
Full details of the configuration and use of the HART communications is covered in the HART implementation manual.
Within the detector there are numerous registers that must be populated with detector identification data and others
that can optionally be used to convey useful information to the connected system. These registers are accessed via the
HART communications link using a HART Field Communicator / Configurator. D-Guard
2
allows the HART functionality to
be turned on or off from the user menu and to read the HART register data (product ID etc.).
Data Setup is accessed from the Quick-Nav Screen 13.3.1 HART Setup Main Screen
To access the HART data setup, unlock the menu and operate
the 'DATA' soft-key The main HART setup page displays the features that may be
configured by the user.
Operate the 'SETTINGS' soft-key to start configuration.
13.3.2 Turning HART Communications On or OFF
Alarm 1 Latching Changed 13.2.7 Alarm 2 Current Settings Screen
Once a change has been made, the 'BACK' arrow icon will be
replaced by the 'save' icon. Operating the save soft-key will
commit the changes to the detector's configuration memory.
Once saved, the back arrow icon will once again show.
Making further changes will return the back arrow icon to the
save icon.
Use the "NEXT PARAMETER' soft-key to move back to the
first Alarm setting (Alarm Trip Level).
All settings for Alarm 1 also relate to Alarm 2 and are
adjusted in the same way as described for Alarm 1.
Alarm 2 settings can be accessed from the Alarm 1
current settings screen or by operating the 'NEXT' arrow
soft-key from the 'Sensor Setup' then selecting Alarm 2