PROcess
Field BUS
Profibus is the leading industrial
communication system for manufacturing automation in Europe with
strong growth in many other markets. Profibus is
supported by Siemens and is promoted by the Profibus
User Organization. Profibus
products are certified by the Profibus User
Organization (PNO), guaranteeing worldwide compatibility.
Profibus was originally defined 15 years ago under the German standard DIN 19245
and is today part of the international standard series IEC 61158. Based on the
initial functionality, many new features have been added and today, Profibus
consists of a family of 3 protocol variations (DP, DPV1, DPV2) that can be used
with different physical transmission media.
Device Profile improve interoperability
In addition to the protocol definitions, Profibus
defines many Application Profiles for specific
device types and industries i.e. ProfiDrive for
Drives, Profibus-PA for Process Automation and ProfiSafe for Safety Applications.
Profibus features real time transmission capabilities, flexible network
topologies, advanced data access procedures, good diagnostic concepts and
proven configuration mechanisms.
Profibus Protocol Family
Profibus is a Multi Master Network. Depending
on the selected protocol variation, it supports
Master/Slave, Master/Master and Slave/Slave communications.
Profibus is optimized to transmit cyclic process
data very fast and efficient between Master and
Slaves but can also handle acyclic Parameter
data and iso synchronous Real time transmissions.
Version DP-V0
Provides the basic functionality of DP,
including cyclic data exchange, station, module and
channel-specific diagnostics and four different interrupt
types for diagnostics and process interrupts, and
for the pulling and plugging of stations.
Version DP-V1
Contains enhancements geared towards process automation,
in particular acyclic data communication for parameter assignment, operation,
visualization and interrupt control of intelligent field devices, parallel to
cyclic user data communication. This permits online access to stations using
engineering tools. In addition, DP-V1 has three additional interrupt types: status
interrupt, update interrupt and a manufacturer-specific interrupt.
Version DP-V2
Contains further enhancements and is geared primarily
towards the demands of drive technology. Due to additional functionalities, such
as isochronous slave mode and lateral slave communication (DXB) etc., the DP-V2
can also be implemented as a drive bus for controlling fast movement sequences
in drive axes
Configuration with GSD-Files
During the setup phase of the Profibus network, the Profibus Master
must be configured with a special configuration tool such as Step7 from Siemens
or NetTool from HMS. The configuration process is based on electronic
device data sheets (GSD-Files) which are required for each Profibus
device. GSD-Files are provided by the device manufacturer and contain electronic
descriptions all relevant communication parameter of the Profibus device.
HMS is an active member of the Profibus User Organization
and participates actively in the further standardization
of the Profibus technology. HMS offers a broad
range of certified Profibus products.
See
Anybus products supporting the Profibus
network
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