Endress+Hauser Proline Promass 83 - Operation via FOUNDATION Fieldbus

Commissioning Proline Promass 83 PROFIBUS DP/PA
104 Endress+Hauser
Assignment of the measured variables to the AI module
The measured variables are permanently assigned to the six Analog Input function blocks (AI) and
cannot be changed.
!
Note!
In the case of customised settings, the units can deviate from the factory setting.
TOTAL module - cyclic transmission of totalizer values
The measuring device has three totalizer function blocks. The totalizer values can be read out
cyclically by the automation system by means of the TOTAL module. Here, the cyclic transmission
of totalizer values to the automation system is effected in data blocks of 5 bytes. The totalizer value
is portrayed in the first four bytes in the form of floating point numbers in accordance with IEEE
754 standard. The fifth byte contains status information pertaining to the totalizer value which is
implemented in accordance with the PROFIBUS Profile Specification, Version 3.0.
Further information on the device status → Page 121
Data structure of the TOTAL module:
Assignment of the measured variables to the TOTAL module (totalizer value)
The TOTAL module can transmit different measured variables to the PROFIBUS master system.
The measured variables are assigned to the totalizer function block (TOTAL) by means of the local
display or with the aid of a class 2 master (operating program) in the “CHANNEL” parameter:
Configuration via the local display:
Function group → BASIC FUNCTION → PROFIBUS PA → TOTALIZER → SELECT TOTALIZER 1
→ CHANNEL
Configuration via the operating program:
Totalizer function block 1…3 → CHANNEL parameter
Factory setting:
Module Analog Input
function block
Measured variable
factory setting
“CHANNEL”
parameter factory
setting
Unit factory
setting
AI (slot 1) 1 Mass flow 277 kg/s
AI (slot 2) 2 Volume flow 273 m
3
/h
AI (slot 3) 3 Corrected volume flow 398 Nm
3
/h
AI (slot 4) 4 Density 281 kg/l
AI (slot 5) 5 Reference density 402 kg/Nl
AI (slot 6) 6 Temperature 285 K
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Totalizer value Status
Module Analog Input
function block
Measured variable
factory setting
“CHANNEL”
parameter factory
setting
Unit factory
setting
TOTAL (slot 7) 1 Mass flow 277 kg/s
TOTAL (slot 8) 2 Mass flow 277 kg/s
TOTAL (slot 9) 3 Mass flow 277 kg/s