CHAPTER
7
Appendix 4: HART® User Information
EDD/DTM
The FS24XPlus™ can communicate using the HART® protocol, which provides digital
communications superimposed on the standard analogue output. More information about the
HART® protocol can be found at the HART® Communication Foundation’s website.
HART® is a master-slave protocol, i.e. FS24XPlus™ does not continually transmit data but will
respond on request.
The DD file is written using HART® version 7 and is compatible with HART® DD Tokenizer versions 6
and 8.
The DD file is supplied in .fm6, .fm8, .hhd and .hdd versions. It is compatible with a wide range of
industry standard products.
To use the HART® communications, load HART® DD file into a suitable HART® host (see
manufacturer’s instructions). The secondary master can be a handheld terminal. The detector has
been tested with the handheld Emerson field communicator.
Access Levels and Password Protection
The FS24XPlus™ user interface recognizes three login profiles. Default profile ‘Guest’ offers limited
access rights. The second profile ‘Engineer’ is available to wider engineering personnel. The third
profile ‘Honeywell® Engineer’ is restricted to Honeywell®Field Service personnel.
The default ‘Guest’ profile is read-only and displays information about the current gas leak reading
and detector status, including active warnings and faults.
The ‘Engineer’ profile access is required to test the detector, and to make changes to the default
configuration.
The ‘Engineer’ profile access is password protected (8-digit alphanumeric, case sensitive). To avoid
potential compatibility issues between different HART® host devices, ensure that a full 8-digit
password is used.
The password is factory set to 00000000 (eight zeroes). Instructions to change the password are
given below.
Note: Some HART® handheld devices will retain the previous login until switched off, even if FS24XPlus™ is disconnected. Ensure
that ‘Engineer’ profile access is protected from unauthorized use by logging off when appropriate.
Honeywell® FS24XPlus™ | User Manual
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