Description Of The Modules; Total Or 2 Settot_Total Or; Settot_Modetot_Total; Total Or 3 Settot_Total Or - Endress+Hauser PROFI BUS Proline Promag 53 PROFIBUS DP Operating Manual

Proline Promag 53 PROFIBUS DP/PA
!
Endress+Hauser
It is essential to adhere to the following sequence/assignment when configuring the modules in the
PROFIBUS master system:
Slot
sequence
1
TOTAL or
2 SETTOT_TOTAL or

SETTOT_MODETOT_TOTAL

TOTAL or
3 SETTOT_TOTAL or
SETTOT_MODETOT_TOTAL
TOTAL or
4 SETTOT_TOTAL or
SETTOT_MODETOT_TOTAL
5
6 DISPLAY_VALUE
7 CONTROL_BLOCK
Note!
• The assignment of the measured variables for totalizer function blocks (1 to 3) 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.
6.7.3

Description of the modules

AI (Analog Input) module
The AI module (slots 1, 5) cyclically transmits the corresponding measured variable, including the
status, to the PROFIBUS master (Class 1). 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 → Page 137
Input data
Byte 1 Byte 2 Byte 3
measured variable (IEEE 754 floating point number)
Module Description
Analog Input function block 1
AI
Output variable → volume flow
Totalizer function block 1
TOTAL → output variable = volume flow (factory setting)
SETTOT → totalizer control
MODETOT → totalizer configuration
Totalizer function block 2
TOTAL → output variable = volume flow (factory setting)
SETTOT → totalizer control
MODETOT → totalizer configuration
Totalizer function block 3
TOTAL → output variable = volume flow (factory setting)
SETTOT → totalizer control
MODETOT → totalizer configuration
Analog Input function block 2
AI
Output variable → mass flow
Value for local display
Control of device functions
Byte 4 Byte 5
Status
Commissioning
121