Download User manual UM EN PROFINET SYS - Configurators

PROFINET versions
Figure 2-3
PROFINET communication channels
Powerful acyclic
communication
Besides the cyclic data exchange, the communication model also allows powerful acyclic
communication that exceeds all previous fieldbus specifications. The available address
area and the parameter length are only limited by the memory areas on the IO devices and
the IO controllers.
TCP/IP communication
In addition to cyclic and acyclic PROFINET communication each device also supports
TCP/IP communication. Webserver or other IP-based technologies can be used on every
device. Other "non PROFINET devices" (such as cameras, printers, PCs) may also be
operated in the network.
Proxy concept
PROFINET IO features the integration of subsystems into a seamless communication and
diagnostic concept via a proxy. Field devices of a lower-level fieldbus system be integrated
into the PROFINET IO system via a proxy. In the PROFINET network the proxy is an IO
device, in the lower-level fieldbus system it is a master. This allows seamless integration of
existing fieldbus systems into the PROFINET network. The proxy represents the lower-level
fieldbus to the PROFINET IO system by mapping the data between both systems.
The user can access all field devices on the basis of the standardized PROFINET
specifications. Double configuration or addressing on the control system and proxy side is
not required. Data exchange, diagnostics and parameterization of the proxy are carried out
via the PROFINET protocol.
7981_en_00
PHOENIX CONTACT
2-3