VEGA VEGASON 54P…56P Profibus PA - Manual (Page 8)

8 VEGASON 54P … 56P
Adjustment with the adjustment pro-
gram VVO - VEGA Visual Operating
The setup and adjustment of the ultrasonic
sensors is generally done on the PC with the
adjustment program VEGA Visual Operating
(VVO) under Windows
® . The program leads
quickly through adjustment and parameter
setting by means of pictures, graphics and
process visualisations.
Note:
The adjustment program VVO must be avail-
able in version 2.70 or higher.
The VEGA adjustment software VVO (VEGA
Visual Operating) operates either as a
subprogram of the host program PACTware
TM
acc. to the FDT concept (Field Device Tool) or
as an independent adjustment program on
any PC, engineering station or process con-
trol computer.
Product description
Visualised input of a vessel linearisation curve in the
adjustment program VVO
The adjustment program recognises the sensor type
VEGA’s adjustment program VVO can ac-
cess the adjustment options of VEGA sen-
sors in their entirety and, if necessary, can
update the complete sensor software. For
communication with Profibus sensors, the
adjustment program either requires a
Profibus-Master-Class2 interface card or the
interface adapter VEGACONNECT 3.
The PC with the Profibus interface card can
be connected directly to any point on the DP
bus with the standard RS 485 Profibus cable.
In conjunction with the adapter
VEGACONNECT, the PC can be connected
directly to the sensor. VEGACONNECT com-
municates via a small plug directly with the
respective sensor.
The adjustment and parameter data can be
saved at any time on the PC with the adjust-
ment software and can be protected by
passwords. If necessary, the adjustments
can be transferred quickly to other sensors.
In practice, the adjustment program VVO is
often installed as a tool on an engineering
station or an operating station. VVO then
accesses all VEGA sensors directly over the
bus via the Profibus interface card (e.g. from
Softing) as Master Class 2, from the DP level
to the PA level (via segment coupler) right
down to the individual sensor.
Beside the instrument master file (GSD), with
which a sensor is logged into the Profibus
system, the majority of all Profibus sensors
requires for adjustment, beside the specific
adjustment software, also a so-called EDD
(Electronic Device Description) for each
sensor, in order to access and adjust the
sensor from the bus levels. This is not the
case with VVO. The adjustment software
VVO can communicate at any time with all
VEGA sensors without the help of a special
database. Of course, all other non-Profibus
VEGA sensors can be adjusted with the
adjustment software as well (4 … 20 mA
sensors or VBUS sensors). With VEGA sen-
sors, it is not necessary to go looking for the
latest EDD. This is the essential requirement
for a manufacturer-independent adjustment
program, like PACTware
TM , anticipated by
many users, see following pages.