Functions/operations using PROFIBUS PA
9
9.1 System integration
A control system (master) uses acyclic and cyclic data transfer to operate and monitor the
positioner. You must set an address of the positioner in advance so that it can communicate
with the master as a slave.
The PROFIBUS address is set to 126 in the as-delivered condition. You set the PROFIBUS
address on the device or use a configuration tool like SIMATIC PDM to set the address through
the bus.
9.2 Acyclic data transfer
9.2.1 Acyclic data transfer using SIMATIC PDM
SIMATIC PDM
The acyclic data transfer is mainly used to transfer parameters during commissioning and
maintenance, for batch processes or to display other measured variables that do not participate
in the cyclic transmission of useful data.
The data is transferred between a class 2 master and a field device using the so-called C2
connections. The device supports up to four C2 connections, so the multiple class 2 masters
can access the same positioner simultaneously.
SIMATIC PDM is preferably used for the acyclic data transfer. It is a software package for
project planning, parameterization, commissioning, diagnostics and maintenance of the
positioner and other field devices.
SIMATIC PDM enables access to process values, alarms, status and diagnostics information
of the device. You can use SIMATIC PDM to execute the following functions for field devices:
● Display
● Set
● Change
● Compare
● Check for plausibility
● Manage and simulate
SIPART PS2 with PROFIBUS PA
Operating Instructions, 05/2019, A5E00127926-AC 189
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