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Rosemount Model 8800C Vortex Flowmeter with FOUNDATION
™
Fieldbus
3-2
ASSIGNING DEVICE TAG
AND NODE ADDRESS
The Model 8800C Flowmeter is shipped with a blank tag and a
temporary address to allow a host to automatically assign an address
and a tag. If the tag or address need to be changed, use the features of
the configuration tool. The tools do the following:
• Change the address to a temporary address (248-251).
• Change the tag to a new value.
• Change the address to a new address.
When the device is at a temporary address, only the tag and address
can be changed or written to. The resource, transducer, and function
blocks are all disabled.
CONFIGURING THE
TRANSDUCER BLOCK
Unless otherwise specified at the time of purchase, the transducer block
will come preconfigured for liquid (water) through a nominal schedule
40, 3 in. pipe at a process temperature of 68 °F (20 °C).
FLOW-SPECIFIC BLOCK
CONFIGURATION
AI Block The Analog Input (AI) function block provides the primary interface of
the measurement to the control and/or monitoring systems. The
interface between the AI block and the transducer block is through the
following 3 parameters:
• The CHANNEL parameter defines which transducer block
measurement is used by the AI block. In the Model 8800C
Flowmeter, only one channel is available: AI1.CHANNEL = 1
(Flow).
• The second parameter is the XD_SCALE.UNITS_INDX. The
default configuration is feet per second (ft/s).
• Finally, since the flow measurement from the transducer block is
in the correct units, L_TYPE is configured as Direct. L_TYPE is
usually only changed to Indirect or Indirect-Square-Root if the
measurement type changes.
Please note that these parameters must be changed in the following
order:
1. CHANNEL
2. XD_SCALE.UNITS_INDEX
3. L_TYPE
NOTE
Please refer to Appendix B: Analog Input (AI) Function Block for more
details on configuring and troubleshooting the AI Block.