3.3 Network configuration
During the configuration of the FF network, the device description (DD) of the
Cerabar S must be downloaded into the directory foreseen for it.
• Start the interface configuration tool.
• Configure the interface.
• Call the DD download routine
• Download the device descriptions (.ffo and .sym files) to the directory offered.
• When the configuration is complete, close the tool and the FF stack (if open).
The Cerabar S device descriptions can be ordered direct from Endress+Hauser or
downloaded from our website
www.endress.com
. They contain all data necessary to
operate Endress+Hauser Foundation Fieldbus devices.
Start-up Start the bus configuration tool. After start-up, the tool shows the network configuration
in the form of an expandable tree. If the Cerabar S has been connected correctly, it
can now be identified:
—
—E+H_CERABAR_S_XXXXXXXX
—
A double click on the name reveals the device data, see also page 17:
PD_TAG the physical name of the device
DEVICE_ID the unique device identifier
NODE_ADDRESS the fieldbus node to which the device is connected
(is automatically allocated by the Configurator)
A click on the name expands the device tree to show the function blocks available for
it:
—
—E+H_CERABAR_S_XXXXXXXX
—RESOURCE_XXXXXXXX (RB)
—TRANSDUCER_XXXXXXXX (TBPR)
—ANALOG_INPUT_XXXXXXXX (AI)
The relationship between the blocks is shown in Fig. 3.3, the function of each block in
Chapters 3.4 to 3.6.
Transducer Block
Resource Block
Sensor
Analog Input Function Block
PRIMARY
VALUE
OUT
OUT_SCALE
XD_SCALE
0
1
0
1
OR
SECONDARY
VALUE
Measured
variable
e.g. PCS
or other
Parameters that
describe the
physical unit, e.g.
Ta g N o .
Signal evaluation
Parameters that
describe the
device settings
Parameter that are important to the
process control system, e.g. scaling,
BA211Y28
Figure 3.3
Block model of device
3 Foundation Fieldbus Interface Cerabar S FF
18 Endress+Hauser
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