6
Please refer to the quick set-up procedure in the
BEKA PROFIBUS PA Display – Fieldbus Interface
Guide.
5.2.4 Reset the instrument to node factory
defaults ‘rESEt’
The BA648CF-P may be reset to the factory
defaults that are shown below:
Security Code
0000 (disabled)
Device address
126
For each of the eight inputs:
Decimal point
XXX.XX
Bar Type
Left
Bar lower limit
0.0
Bar Upper limit
100.0
Gain
1.0
Offset
0.0
To reset the BA648CF-P select ‘rESEt’ in the
configuration menu by operating the
▼
or
▲
button. To enter the function press P which will
reveal ‘0000’ with the left hand digit flashing. To
prevent accidental use of this function, ‘5urE’ must
be entered to confirm that the instrument is to be
reset.
Using the
▼
or
▲
button set the flashing digit to ‘5’
and press the P button to move control to the next
digit which should be set to ‘u’. When the four
letters of ‘5urE’ have been entered operating the E
button will reset the BA648CF-P to the factory
defaults. Any existing configuration and addresses
will be lost when the instrument is reset.
FIG 4 Node configuration menu
5.3 Listener configuration menu
When used as a fieldbus listener the BA648CF-P
is not visible to the fieldbus host and can only be
configured using the front panel push buttons
shown in Fig 2.
The listener configuration menu is separated into
three sections, ‘SCAn’, ‘LISt’ and ‘Edit’, plus three
housekeeping functions ‘CodE’, ‘tYPE’ and ‘rESEt’
as shown in Fig 6.
‘SCAn’ is the simplest method of configuration if
the addresses of the data sources to be displayed
by the BA648CF-P listener are not known.
In the ‘SCAn’ function pressing the P button
causes the BA648CF-P listener to search the
fieldbus segment to which it is connected for all
data sources. The hexadecimal device
addresses for each data source are displayed as
shown in Fig 5.
The
▼
and
▲
push buttons scroll the display
through all the data sources on the segment
showing the source and destination address for
each one. To aid identification, operating the P
button will preview the value of the data at the
selected addresses with a zero index i.e. the first
five bytes in the data string. If the format of the
data is not DS-33 (status + float) ‘no dAt’ will be
displayed. The selected source and destination
addresses may be allocated to one of the eight
BA648CF-P listener inputs in-1, to in-8. Operating
the P button will reveal the current listener input
which may be changed using the
▼
or
▲
push
button, when set as required, operating the E push
button will enter the allocation. If the process
variable to be displayed is located further along the
data stream i.e. has an index greater than 5, the
required index must be entered via the index ‘ind’
function in the edit sub-menu.
A worked configuration example illustrating this
procedure is contained in the Quick Set-up section
of the BEKA PROFIBUS PA Display – Fieldbus
Interface Guide.
Fig 5 Device Addresses
If the source and destination addresses and index
of the process variable to be displayed by the
BA648CF-P listener are known, they may be
directly entered via the edit sub-menu. This sub-
menu also provides full control of both the numeric
and bargraph display parameters.
