Device Data Base Files - Omron PRT1-COM Operation Manual

Device Data Base files

1-5

Device Data Base files

Plug-and-play
DDB-file, GSD-file
General section
DP-master section
DP-slave section
Configurator
8
To achieve simple plug-and-play configuration of the PROFIBUS-DP network,
the characteristic features of a device are specified in a file. This file is called a
DDB-file (Device Data Base file) or a GSD-file (Gerätestammdaten file). The
GSD files are prepared individually by the vendor for each type of device,
according a fixed format. Some parameters are mandatory, some have a default
value and some are optional.
The device data base file is divided into three parts:
• General specifications
This section contains vendor and device names, hardware and software
release versions, station type and identification number, protocol
specification and the baud rates supported.
• DP master-related specifications
This section contains all parameters, which only apply to DP master devices
(e.g. maximum memory size for master parameter set, maximum number of
entries in the list of active stations or the maximum number of slaves the
master can handle).
• DP slave-related specifications
This section contains all specifications related to slaves (e.g. minimum time
between two slave poll cycles, specification of the inputs and outputs and
consistency of the I/O data).
The device data base file of each device is loaded in the configurator and
downloaded to the master device.
Refer to the Operation Manual of the PROFIBUS-DP Master Unit (W349) for
usage of the GSD file in the master's configuration software.
Section 1-5