Wieland
podis
system
Manual V 1.03 / ref. no. 00.000.0059.0 / 28.03.2001
The use of distributed peripheral devices that
communicate via field bus is suited to this type of
installation. These devices control and switch the
connected processes both directly and locally.
Master and slave
The DP master is the connecting element between the
central control CPU and distributed peripheral devices
such as
podis
DRIVE
motor starters. The DP master
changes and monitors the data exchange between the
CPU and the distributed devices.
As it is an open bus system, all the devices from the
manufacturer which fulfil the norm EN 50170, volume 2,
PROFIBUS can be inserted. The record is kept by the
PNO (PROFIBUS user organisation).
To enable a connection between the programmable
controller and the distributed devices, the DP master
must be configured with the individual device data.
For the formal description of
podis
DRIVE
motor control
units, a so-called GSD file is required.
GSD files
Under PROFIBUS DP, the performance characteristics of
the devices are documented by the manufacturers in the
form of a GSD file and then made available to the user.
The structure, content and coding of this master device
data are standardised so that it is possible to configure
any DP slaves using project design devices from various
manufacturers.
The PNO supplies information about the GSD file of all
listed manufacturers.
The GSD data is read by the respective configuration
software and the corresponding settings are transferred.
Any required operating steps can be taken from the
relevant manuals.
Structure of the GSD file for
podis
Wieland has a GSD file available for all types of
podis
devices.
The GSD file describes a modular system with a
maximum of 5 modules (1 PROFIBUS slave module and
4 extension modules).
