FMC Corporation - Talstar 80 Manuel D’Utilisation

Commissioning

Proline Promass 80 PROFIBUS PA

54

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 4 and the 

Totalizer function block 1 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.

The corresponding measured variable, including the status, is cyclically transmitted to the 
PROFIBUS master (Class 1) by means of the AI module (slots 1 to 4). The measured variable is 
represented in the first four bytes in the form of floating point numbers in accordance with the 
IEEE 754 standard. The fifth byte contains standardized status information corresponding to the 
measured variable.
Further information on the device status 

Input data

1

AI

Analog Input function block 1
Output variable 

→ mass flow (factory setting)

2

AI

Analog Input function block 2
Output variable 

→ volume flow (factory setting)

3

AI

Analog Input function block 3
Output variable  

→ corrected volume flow (factory setting)

4

AI

Analog Input function block 4
Output variable  

→ density (factory setting)

5

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 

6

DISPLAY_VALUE

Default value for local display

7

CONTROL_BLOCK

Control of device functions

Measured variable (IEEE 754 floating point 
number)

Status