Siemens SIMATIC NET System Manual page 19

PROFINET profiles
PROFINET transfers data transparently. The interpretation of the data is the responsibility of
the user. The profiles are stipulations agreed by manufacturers and users relating to certain
properties, performance characteristics and behavior of devices and systems.
● PROFIdrive
The PROFIdrive profile (IEC 61800-7) defines the device behavior and the method of
accessing internal device data for electric drives on PROFIBUS and PROFINET.
The profile describes in detail how the communications functions direct data exchange,
constant bus cycle time and isochronous real time should be used in drive applications. It
also specifies all the device properties that influence the interface to a controller
connected via PROFIBUS or PROFINET. These include the state machine (sequence
control), the encoder interface, the standardization of values, the definition of standard
frames, access to drive parameters etc.
The PROFIdrive profile supports both central and distributed motion control concepts.
● PROFIsafe
The PROFIsafe profile (IEC 61508 / EN 954-1) defines how the safety-related devices
achieve fail-safe communication so that they can be used for safety-related applications.
The profile is a software solution that is implemented as an additional layer (PROFIsafe
layer) in the devices (e.g. operating system of the CPU). The safety-relevant data is
included in the frame in addition to the standard data and forms the PROFIsafe frame.
Existing solutions can be expanded without needing to change cabling.
PROFIsafe prevents errors such as address corruption, loss, delay, etc. when transferring
messages by consecutively numbering the PROFIsafe data, time monitoring, authenticity
monitoring using passwords and optimized CRC protection.
● PROFIenergy
With the PROFIenergy profile, individual consumers or entire production units can be
turned off and on. This is coordinated centrally by a higher-level controller; networking is
via PROFINET. During long pauses, this allows as much energy as possible to be saved.
Plant sections that are turned off for a short time contribute to the uniform distribution of
energy and optimum use of energy.
It is also possible to read out measurement variables relating to consumption.
PROFIenergy is defined so that the necessary function blocks can be included easily in
existing automation solutions.
Implementation of PROFINET in SIMATIC
PROFINET is implemented in the SIMATIC products as follows:
● Communication between field devices is implemented in SIMATIC with PROFINET IO.
● Installation technology and network components are available under the SIMATIC NET
brand name.
● For remote maintenance and network diagnostics, the tried and tested IT standards from
the office world are used (e.g. SNMP = Simple Network Management Protocol for
network parameter assignment and diagnostics).
Industrial Ethernet
System Manual, 09/2019, C79000-G8976-C242-10
Basics of communication with Industrial Ethernet
1.2 Industrial Ethernet
19