Endress+Hauser Proline t-mass 65 PROFIBUS DP, Руководство по эксплуатации

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Commissioning Proline t-mass 65 PROFIBUS DP
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6.6.2 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.
It is essential to adhere to the following sequence/assignment when configuring the modules in the
PROFIBUS master system:
!
Note!
• The assignment of the measured variables for the Analog Input function blocks (1 to 3) and the
totalizer function blocks (1 to 2) can be changed by means of the CHANNEL function.
A detailed description of the individual modules is contained in the following section.
• The device has to be reset once a new configuration has been loaded to the automation system.
This can be effected as follows:
– By means of the local display
– By means of an operating program (e.g. FieldCare)
– By switching the supply voltage off and on again.
Slot sequence Module Description
1 AI
Analog Input function block 1
Output variable
→
Mass flow (factory setting)
2 AI
Analog Input function block 2
Output variable
→
Corrected volume flow (factory setting)
3 AI
Analog Input function block 3
Output variable
→
Temperature (factory setting)
4
TOTAL or
SETTOT_TOTAL or
SETTOT_MODETOT_TOTAL
Totalizer function block 1
TOTAL
→
output variable = totalized mass flow (factory setting)
SETTOT
→
totalizer control
MODETOT
→
totalizer configuration
5
TOTAL or
SETTOT_TOTAL or
SETTOT_MODETOT_TOTAL
Totalizer function block 2
TOTAL
→
output variable = totalized mass flow (factory setting)
SETTOT
→
totalizer control
MODETOT
→
totalizer configuration
6 DISPLAY_VALUE Value for local display
7 CONTROL_BLOCK Control of device functions
8 PRESSURE_VALUE Process pressure