Specifications

216 GX Configurator-PN

During the connection, the IO-Controller assigns the IP address to each of the IO-Devices.

After this, the PROFINET network is correctly configured. IP address conflicts have been avoided.

The whole of this sequence is made possible by the DCP protocol.

Architecture of an IO-Device

The PROFINET IO input/output devices obey a uniform device model. This model allows compact

field devices to be configured as modules.

A PROFINET IO input/output device is made up of slots, themselves made up of sub-slots. The in-

put/output data is situated at sub-slot level. This organization may reflect a real or virtual situation.

In addition to the input/output modules, each IO-Device contains at least one DAP (Device Access

Point). To establish a connection, the IO-Controller connects to the DAP. The standard defines the

DAP as an input module like any other. However, the DAP is often a module found on slot 0 of the

IO-Device with an output size equal to 0.

A PROFINET IO-Device is configured by means of a GSD file. This file, in XML format, concentrates

all the features and essential data in one place:

Properties of the device (transmission parameters, etc.)

Number and size of compatible modules

Configuration of each module

Module parameters