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1. DESCRIPTION
The BA644DF-F fieldbus indicator
FOUNDATION™ fieldbus instrument that may be
configured as a fieldbus node or a fieldbus listener.
It can display up to eight fieldbus process variables
on a five digit LCD and a 31 segment analogue
bargraph. The instrument is bus powered so no
additional power supply is required.
As a fieldbus node the indicator is configured via
the fieldbus host.
Communication Fieldbus Function
Protocol Blocks
FOUNDATION™ fieldbus Input Selector (2 x IS)
Digital input (6 x DI)
Device Description files may be downloaded from
the Fieldbus Foundation or from the BEKA
associates websites.
When configured as a fieldbus listener the
BA644DF-F is not visible to the fieldbus host and
can only be configured using the push buttons on
the front of the instrument.
Housed in a robust IP66 glass reinforced polyester
(GRP) enclosure with a toughened glass window,
the BA644DF-F is surface mounting, or may be
pipe mounted using one of the accessory kits.
The instrument’s communication protocol is shown
on a label inside the terminal cover. The ‘-F’ order
code suffix also indicates the protocol but is not
shown on the instrument identification label.
There is an alternative version of the fieldbus
display, order code BA644DF-P for use on
PROFIBUS PA networks.
2. OPERATION
The BA644DF-F indicator can display up to eight
FOUNDATION™ fieldbus process variables
designated in-1 to in-8. The operator can select
which variable is displayed using the
▼
and
▲
push buttons which scroll the display through the
eight inputs. A numeric annunciator on the left
hand side of the display shows which of the eight
inputs is currently being displayed.
2.1 Error messages
When the BA644DF-F is configured as a listener
the following error messages may be displayed:
‘no ConF’
No inputs have been
configured or are enabled.
‘no dAtA’
No data is being received
with the current configuration.
3. SYSTEM DESIGN
The BA644DF-F FOUNDATION™ fieldbus
indicator is powered via the fieldbus which is
connected to non-polarised terminals 1 and 2 as
shown in Fig 1. The indicator may be connected to
any FOUNDATION™ fieldbus segment that can
supply an additional 13mA at between 9 and 32V.
Fig 1 Typical FOUNDATION™ fieldbus segment
Summary of Contents for FOUNDATION BA644DF-F
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