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1. DESCRIPTION
The BA688CF Fieldbus Display is a panel
mounting instrument that can display up to eight
fieldbus process variables, together with their
units of measurement and tag information. The
instruments are bus powered so no additional
power supply is required.
Two versions are available, one for Profibus PA
and the other for Fieldbus Foundation systems.
The Foundation Fieldbus version may be
ordered, or configured on-site, with alternative
function blocks allowing use with most Fieldbus
Foundation hosts.
Order Communication Function
Code Protocol Blocks
BA688CF-P Profibus PA
Eight Analogue Outputs
(8 x AO)
BA688CF-F
Fieldbus Revision
1
Foundation
One Multiple Analogue
Output
(1 x MAO)
or Revision 2
Two Input Selectors
(2 x IS)
The required Device Description files, which may
be downloaded from the Fieldbus Foundation or
BEKA web sites, depend upon which BA688CF-F
revision is selected.
The instrument’s communications protocol is
shown on the instrument information label, which
is located on the top outer surface of the
enclosure.
Nine selectable standard display formats enable
one, two, three or four process variables, some
with bargraphs to be displayed on one screen.
Alternatively, custom display formats including
text and simple graphics may be generated and
saved in permanent memory.
The six front panel push buttons that control the
instrument display may also be used for returning
operator acknowledgements, thus enabling the
Fieldbus Display to function as a simple operator
interface. If larger industrial push buttons are
required for entering these acknowledgements,
up to six external switches may be connected to
the BA688CF. These switch inputs may also be
used for returning the status of plant contacts.
The Fieldbus Display can be supplied with six
optional alarm outputs that may be linked to any
of the displayed fieldbus variables.
Housed in a robust 72 x 144 panel mounting DIN
enclosure, the BA688CF Fieldbus Display has an
IP66 front panel and is supplied with a gasket to
seal the joint between the instrument and the
panel.
1.1 Documentation
This instruction manual describes system design,
conditioning and installation of the BA688CF
fieldbus display. For detailed programming
information please refer to the following guides
that can be downloaded from the BEKA website
www.beka.co.uk
Foundation Fieldbus Display – Fieldbus Interface
Guide
Profibus Display – Fieldbus Interface Guide
Fieldbus Display – Programming Guide
1.2 Version 2.0 firmware
This manual describes the enhanced features of
BA688CF fieldbus displays employing version 2.0
firmware that was released in December 2005.
Namely:
Standard screens increased from 4 to 9
Multiple bargraph limits added
Input scaling added
Fieldbus Foundation version now has
choice of fieldbus function blocks:
Revision 1 1 x MAO (multiple
analogue output)
Revision 2 2 x IS (Input selector)
Selection can be made on-site.
The instrument’s firmware version can be
established using the ‘Unit Info’ function in the
main configuration menu – see section 5.3.9 of
this manual.
BA688CF displays employing version 2.0
firmware are backwards compatible with all
earlier versions of the instrument.
