Establishing Communication With Host Systems - Honeywell SLG 700 Option Manual

2.3 Establishing communication with host systems

The transmitter establishes communication with the host systems using DD or DTM.
2.3.1.
The DD is a binary file that provides the definition for parameters in the FBAP of the transmitter. For
example, DD refers to the function blocks that a transmitter contains, and the corresponding
parameters in the blocks that are critical to the interoperability of Fieldbus devices. They define the
data required to establish communications between different Fieldbus devices from multiple vendors
with control system hosts. The DD provides an extended description of each object in the Virtual Field
Device (VFD).
The Fieldbus Foundation provides the DD for all registered devices on its website,
http://www.fieldbus.org/index.php?option=com_mtree&task=viewlink&link_id=2026&ffbstatus=Regi
stered&Itemid=324
2.3.2. Enhanced Device Description (EDD)
There are two types of EDDs are available, namely .ff5/.sy5 and .ffo/sym. The .ffo/.sym binary files
are generated for the legacy hosts to load the device DD that is generated using latest tokenizer. A few
constructs, such as Images that are supported in .ff5/.sy5 binaries, are not supported in .ffo/.sym binary
files.
2.3.3.
The DTM is similar to a device driver that enables usage of devices in all the asset management and
device configuration software such as FDM or PACTware, with the help of the FDT-DTM technology.
The DTM has the following primary functions:

Provides a graphic user interface for device configuration.

Provides device configuration, calibration, and management features for the particular
device.
The DTM provides functions for accessing device parameters, configuring and operating the devices,
calibrating, and diagnosing problems.
Download the current version of the FF DTMs from the software tab at
https://www.honeywellprocess.com/en-US/explore/products/instrumentation/process-level-
sensors/Pages/smartline-level-transmitter.aspx
Page 6
Device Description (DD)
Device Type Manager (DTM)
FOUNDATION Fieldbus Option User's Manual Rev.5