Commissioning Promag 53 PROFIBUS DP/PA
96 Endress+Hauser
6.4 Commissioning the PROFIBUS interface
!
Note!
• All functions required for commissioning are described in detail in the "Description of
Device Functions" manual which is a separate part of this Operating Manual.
• A code (factory setting: 53) must be entered to change device functions, numerical values
or factory settings. → 72
6.4.1 PROFIBUS DP commissioning
The following steps must be carried out in the sequence specified:
1. Check the hardware write protection:
The WRITE PROTECT (6102) parameter indicates whether it is possible to write to the
device parameters via PROFIBUS (acyclic data transmission, e.g. via FieldCare).
!
Note!
‣ This check is not needed if operating via the local display.
BASIC FUNCTION (G) PROFIBUS DP (GBA) CONFIGURATION (610)
WRITE PROTECT (6102) Display of one of the following options:
– OFF (factory setting) = write access via PROFIBUS possible
– ON = write access via PROFIBUS not possible
Deactivate the write protection if necessary. → 77
2. Enter the tag name (optional):
BASIC FUNCTION (G) PROFIBUS DP (GBA) CONFIGURATION (610)
TAG NAME (6100)
3. Configuring the fieldbus address:
‣ Software addressing using the local display:
BASIC FUNCTION (G) PROFIBUS DP (GBA) CONFIGURATION (610)
FIELDBUS ADDRESS (6101)
‣ Hardware addressing via miniature switches → 78
4. Select the system unit:
a. Determine the units by means of the system units group:
MEASURED VARIABLES (A) SYSTEM UNITS (ACA) CONFIGURATION (040)
UNIT MASS FLOW (0400) / UNIT MASS (0401) / UNIT
VOLUME FLOW (0402) / …
b. In the function UNIT TO BUS (6141), select the option SET UNITS, so that the
measured variables transmitted cyclically to the PROFIBUS master (Class 1) are
transmitted with the system units set in the measuring device:
BASIC FUNCTION (G) PROFIBUS DP (GBA) OPERATION (614)
UNIT TO BUS (6141)
!
Note!
– The configuration of the system units for the totalizer is described separately
see step 7
– If the system unit of a measured variable is changed by means of the local operation
or an operating program, this initially does not have any effect on the unit that is used
to transmit the measured variable to the PROFIBUS master (Class 1). Changed system
units of the measured variables are not transmitted to the PROFIBUS master (Class 1)
until the SET UNITS option is activated in the function BASIC FUNCTION (G)
PROFIBUS DP (GBA) OPERATION (614) UNIT TO BUS (6141).
5. Configuration of the Analog Input function blocks 1 to 2:
The measuring device has two Analog Input function blocks (AI modules), through
which the various measured variables can be cyclically transmitted to the PROFIBUS
master (Class 1). The assignment of a measured variable to the Analog Input function
block is shown below using the example of Analog Input function block 1 (AI module,
slot 1).
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