Profibus Pa Commissioning - Endress+Hauser PROFI BUS Proline Promag 53 PROFIBUS DP Operating Manual

Commissioning
104
6.4.2

PROFIBUS PA 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 PA (GCA) → 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. → Page 82
2. Enter the tag name (optional):
BASIC FUNCTION (G) → PROFIBUS PA (GCA) → CONFIGURATION (610) →
TAG NAME (6100)
3. Configuring the fieldbus address:
• Software addressing using the local display:
BASIC FUNCTION (G) → PROFIBUS PA (GCA) → CONFIGURATION (610) →
FIELDBUS ADDRESS (6101)
• Hardware addressing via miniature switches→ Page 83
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 PA (GCA) → OPERATION (614) →
UNIT TO BUS (6141)
!
Note!
– The configuration of the system units for the totalizer is described separately
→ see step 6
– 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 PA (GCA)
→ OPERATION (614) → UNIT TO BUS (6141).
5. Setting the measuring mode:
In the function MEASURING MODE (6601), select the flow portions to be measured by the
measuring device.
BASIC FUNCTION (G) → SYSTEM PARAMETER (GLA) → CONFIGURATION (660) →
MEASURING MODE (6601) → Selection of one of the following options:
– UNIDIRECTIONAL (factory setting) = only the positive flow portions
– BIDIRECTIONAL = the positive and negative flow components
Proline Promag 53 PROFIBUS DP/PA
Endress+Hauser