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2.3
PROFINET IRT Protocol
PROFINET is the open Industrial Ethernet standard for automation from PROFIBUS and PROFINET
International. The PROFINET IRT device provides PROFINET IO Isochronous Real Time
Communication.
PROFINET makes a clear distinction between fast cyclical data,
IO Data
, and acyclical data,
Record Data
. PROFINET IO Data corresponds to what is generally referred to as
I/O Data
in
Anybus Communicator CAN PROFINET IRT (2.32). PROFINET Record Data is not supported.
Anybus Communicator CAN PROFINET IRT (2.32) acts as a PROFINET device (slave), which means
it can be accessed by a PROFINET controller (master), but will not initiate communication by
itself.
PROFINET IO Data (I/O Data)
PROFINET IO Data is exchanged cyclically and is built up by I/O modules. The actual I/O
configuration is determined by the PROFINET IO Controller. The modules are mapped to the
Input and Output Buffers in the order of their slot number.
The first two bytes of the I/O data area are reserved for the Control Word and the Status Word,
which are used by the IO Controller to control and report status on the nodes on the CAN
subnetwork. The remainder is available for real-time data transfer using PDOs.
GSD File
All PROFINET devices are associated with an XML-based
GSD
file. This file contains information
about the basic capabilities and configuration options of the device.
The latest version of the GSD file for Anybus Communicator CAN PROFINET IRT (2.32) can be
downloaded from
Anybus
®
Communicator
™
CAN PROFINET
®
IRT (2.32) User Manual
SCM-1202-035 1.2 en-US