GE VersaPoint IC220PBI002, User Manual

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GFK-1911B Chapter 7 Configuration 7-3
7
Configuration of the Profibus Master
Profibus-DP is normally a single master system. This master is typically a
communications card installed in a Programmable Logic Controller,
industrial PC, or other controller (Drive, Computer Numerical Control, etc.).
In each case these masters require configuration information for the
attached Profibus Slaves to be input. This configuration is typically
accomplished using a configuration tool specifically designed for the
Profibus master. . An example of configuring the VersaPoint Profibus NIU
with a Series 90-30 PLC Profibus Master CPU follows in this chapter.
Please consult the information available with your Profibus Master for more
information.
The GSD File
Every Profibus slave device certified by the Profibus Trade Organization is
required to define a GSD file (electronic device data sheet).
The GSD file is a text file filled with keywords and values that together
define the specific characteristics, features, and limitations of the slave
device. For the Profibus NIU, the GSD file also lists the Profibus
configuration identifiers for all currently-supported VersaPoint I/O modules.
The GSD file also includes the text strings to properly decode the diagnostic
information provided by the NIU.
Please refer to appendix D for an example GSD file for the Profibus NIU.
Configuring the Profibus Master
The Profibus NIU and the modules in the I/O Station must be included in the
configuration of the Profibus Master. The exact configuration steps will
depend on the type of master being configured, and the features that will be
used in the application.
As an example, this section shows the steps to include a VersaPoint
Profibus NIU in the configuration of a Series 90-30 PLC CPU model
IC693CPU366. Refer to the User Manual for the Profibus Master for more
information and instructions.
The basic configuration steps for the master are:
1 . Configuring the Profibus parameters of the CPU. These include:
a. Assigning memory references to status bits for all of the slaves on
the Profibus network. The Profibus NIU will be one of these slaves.
b. Assigning a memory area to contain the ID of any slave that reports
diagnostic data. During system operation, the master can monitor