Omron CJ Series User Manual

1 Features and System Configuration
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CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
 GSD File Technology
The older and most commonly used configuration technology is the based on GSD files (General
Slave Data file). A GSD file is a text file, containing the characteristic features and configuration
options of a device. The device data base file of each device is loaded in the configurator and down-
loaded to the master device.
GSD files are usually supplied with a Unit, or can be downloaded from the Internet, either from the
manufacturer's site, or from the GSD library of the PROFIBUS International at the following website:
http://www.profibus.com
 GSD File Language
The language used in the GSD file is indicated by the last letter of the file extension, *.GS?:
Default = GSD
English = GSE
German = GSG
Italian = GSI
Portuguese = GSP
Spanish = GSS
The GSD files are prepared individually by the vendor for each type of device, according to 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 Section
This section contains the vendor name, the device name, hardware and software release versions,
device type and identification number, protocol specification and supported baud rates.
 DP-master Section
This section contains all parameters which only apply to DP master devices (e.g. maximum memory
size for the master parameter set, maximum number of entries in the list of active devices, or the
maximum number of slaves the master can handle).
 DP-slave Section:
This section contains all specification 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). For PROFIBUS DP-
V1 devices this section also specifies what services for PROFIBUS DP-V1 are supported.
 DTM versus GSD File
When comparing the two configuration technologies, a GSD file only provides information on the
device characteristics and configuration options. It has no GUI of its own, nor can it connect to the
device itself. A GSD file always requires a separate configurator program to interpret the data. In the
FDT/ DTM concept all these device related functions are included in the DTM. The DTM can be exe-
cuted from any program, which provides FDT interfaces.
Sending PROFIBUS DP-V1 commands to a device from the configuration tool is only possible using
DTM technology. The GSD file does not provide this means.
1-1-10 GSD File Technology

Omron CJ Series Specifications

General

Brand	Omron
Model	CJ Series
Category	Controller
Language	English