Fluid Components International ST100 Series PROFIBUS PA - Manual (Page 8)

ST100 Series Profibus PA
4 Fluid Components International LLC
When configuring the ST100 it is very important to follow the Slot sequence described below. If a module is not needed make sure to load an
“EMPTY MODULE” in its place. In the example above the two “EMPTY_MODULE” modules are taking the place of the PRESSURE AI that is not offer
in this model, and the profile TOTALIZER. The recommended TOTALIZER to use is the ST100 “internal” Totalizer.
ST100 AI SLOT DEFINITION TABLE
1 FLOW
2 TEMPERATURE
3 PRESSURE
4 PROFILE TOTALIZER
5 FCI INT. TOTALIZER
Acyclic Operation Description
A number of transducer blocks that receive the process data from the instrument and a corresponding number of analog input blocks support the
acyclic data operation of the ST100. See diagram below for a quick overview of the process.
The ST100 implements the PROFIBUS PA Profile 3 for a multi-variable device. Profile 3 uses a function block model to organize the variables and the
parameters. The diagram shows the PROFIBUS PA function blocks. A class 2 master is needed to access the profile 3 function blocks.
PV - PROCESS FLOW
*
TV - FCI TOTALIZER FCI TOTALIZER
SV - PROCESS
TEMPERATURE
AI BLOCK FOR FLOW
PROFIBUS PA - PROCESS VARIABLES
VOLUMETRIC FLOW
FLOW
2
3 1
4
+
AI BLOCK FOR
TEMPERATURE
AI BLOCK FOR
FCI TOTALIZER
*
OTHER FUNCTION BLOCKS
AI BLOCK FOR
FCI PRESSURE
PROCESS TEMPERATURE
PROCESS PRESSURE
PROFILE P3
TOTALIZER BLOCK
ST100 - PROCESS VARIABLES
VELOCITY FLOW
TRANSDUCER BLOCK VARIABLES
*
QV - PROCESS
PRESSURE
MASS FLOW FROM
ANALOG INPUT BLOCKS