Murr Elektronik CUBE20S PROFINET IO User Manual

PROFINET IO
User manual 57106_hdb_en_13 57 / 94
11 PROFINET IO
11.1 Basics
General information PROFINET is an open Industrial Ethernet standard of PROFIBUS & PROF-
INET International (PI) for the automation system. PROFINET is standardized
in IEC 61158.
PROFINET uses TCP/IP and IT standards and supplements the PROFIBUS
technology for applications in which fast data communication is required in
combination with industrial IT functions.
There are 2 PROFINET functional classes:
 PROFINET IO (the class used in the bus node art. no. 57106)
 PROFINET CBA
These classes can be realized in 3 performance levels:
 TCP/IP communication
 RT communication (the level used in the bus node art. no. 57106)
 IRT communication
PROFINET IO PROFINET IO describes an I/O data view of decentralized periphery. It de-
scribes the entire data exchange between the IO controller and IO device. The
planning of PROFINET IO is based on PROFIBUS. PROFINET IO includes
the real-time concept (RT).
A provider-consumer model is used in PROFINET IO. It supports the applica-
tion relations (AR = Application Relation) between nodes with equal access
rights on the Ethernet. In this case the provider sends its data without request
of the communication partner. Beside process data exchange it also supports
the functions for parameterization and diagnosis.
PROFINET CBA PROFINET CBA stands for Component Based Automation.
 The purpose of this component model is the communication between au-
tonomously working control units.
 It allows a modular design of complex systems with the help of distributed
intelligence by means of a graphic configuration of the communication be-
tween intelligent modules.
TCP/IP communication This is an open communication via Ethernet TCP/IP which does not take place
mandatorily in real time.
RT communication RT stands for Real-Time.
 The RT communication is the basis for the data exchange on PROFINET
IO.
 RT data are handled with higher priority.
IRT communication IRT stands for Isochronous Real-T
ime.
 During the IRT communication, the start of the bus cycle is exactly timed,
i.e., with a maximum permissible deviation and with constant synchroniza-
tion. This guarantees time-controlled and isochronous transfer of data.
 Sync telegrams from a Sync master in the network are used for synchro-
nization.

Murr Elektronik CUBE20S PROFINET IO Specifications

General

Brand	Murr Elektronik
Model	CUBE20S PROFINET IO
Category	Control Unit
Language	English