Profibus Pa Cyclic Data Transmission; Block Model; Modules For Cyclic Data Transmission - Endress+Hauser PROFI BUS Proline Promag 53 PROFIBUS DP Operating Manual

Commissioning
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6.7

PROFIBUS PA cyclic data transmission

Below is a description of the cyclic data transmission when using the Promag 53 GSD file (complete
device functionality).
6.7.1

Block model

The block model illustrated shows which input and output data the measuring device provides for
cyclic data transmission via PROFIBUS PA.
Physical
Block
Transducer
Signal
processing
PROFIBUS
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Manufacturer
Fig. 65: Block model for Promag 53 PROFIBUS PA Profile 3.0
6.7.2

Modules for cyclic data transmission

The measuring device is a so-called modular PROFIBUS slave. In contrast to a compact slave, the
structure of a modular slave is variable - it consists of several individual modules. In the GSD file,
the individual modules (input and output data) are described with their individual properties. The
modules are permanently assigned to the slots, i.e. the sequence or arrangement of the modules
must be observed when configuring the modules (see following table). Gaps between configured
modules have to be assigned the EMPTY_MODULE module.
To optimize the data throughput rate of the PROFIBUS network, it is recommended to only
configure modules that are processed in the PROFIBUS master system.
XXX.XXX.XX Local
Display
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Analog Input 1
Volume Flow
block
Analog Input 2
Mass Flow
Totalizer 1
PROFILE
Parameter
Totalizer 2
Totalizer 3
specific
Parameter
Measured variable 1
Measured variable 2
Proline Promag 53 PROFIBUS DP/PA
Output value AI
Output value AI
Configuration SETTOT, MODETOT Configuration SETTOT, MODETOT
Out value TOTAL
Configuration SETTOT, MODETOT
Out value TOTAL
Configuration SETTOT, MODETOT
Out value TOTAL
Display value (DISPLAY_VALUE)
Control (CONTROL_BLOCK)
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