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Glossary
PROFINET device
A PROFINET IO system is assembled from the following devices:
• An IO controller is a controller or PC that controls automation tasks.
• An IO device is a field device that is configured and controlled by an IO controller. An IO
• IO Supervisor is an engineering tools typically based on a PC that is used to configure
An application relation (AR) is formed between an IO controller and and IO device
Communication relations (CR) with varying properties are specified for the transfer of
parameters, cyclical data communication and alarm handling based on this AR.
The properties and options of an IO device are described in a Generic System Description
(GSD) file. This file is written in GSDML (GSD Markup Language) - an extension of XML -
and is used as a planning tool to create a base configuration for PROFINET IO systems for
planning.
PROFINET IO
PROFINET IO (Input Output) is used for controlling sensors and actuators using a central
controller in production engineering.
Proxy
A computer that responds to name query broadcasts and answers to names that do not go
to the local subnet. To evaluate the names, the proxy communicates with a WINS server and
then retains the names in the cache for a certain time.
RS-232: Recommended Standard 232
RS is an accepted industrial standard for serial data communication. For cable lengths
shorter than 15 m. No differential evaluation. Sending and receiving on different lines.
SELV
Safety extra low voltage
Sensor
In electrical engineering, a sensor is a component that can qualitively measure not only
specific physical or chemical properties (such as heat radiation, temperature, humidity,
pressure, excess pressure, sound, luminance, magnetism, acceleration, force) as well as the
physical condition of its surroundings or register them as measured variables.
Server
Network station that provides services and resources for other stations, for example, a
computer that manages data and passes this on to other computers as needed.
Glossary-8
device consists of several modules and submodules.
and perform diagnostics on individual IO devices, and to configure the complete plant.
The controller gets its data from the Supervisor and configures the device based on this.
Vision Sensor SIMATIC VS120
Operating Instructions, Edition 02/2006, A5E00757507-01
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