Alarm 2 Current Settings Screen; Digital Data Configuration; Hart Setup Main Screen; Turning Hart Communications On Or Off - GasTech D-Guard2 Operator's Manual

Digital gas detector with hart communications

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Instruction manual (59 pages)

Table Of Contents

Table of Contents

Alarm 1 Latching Changed

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).

13.3. Digital Data Configuration

D-Guard

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

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

To access the HART data setup, unlock the menu and operate

the 'DATA' soft-key

13.3.2

Turning HART Communications On or OFF

13.2.7