PROFINET for product development
Expert support for your device development with PROFINET
Shorten your development time for PROFINET devices and perfectly satisfy your customers’ requirements. As a committed PI member, Siemens has been actively driving forward the development of PROFINET from the outset. By choosing us, you therefore benefit from end-to-end PROFINET expertise, advanced consulting skills, and proven technology components to help you develop your devices faster and more efficiently. You can count on our support during the entire development process through to certification.
The Industrial Ethernet Standard PROFINET is the communication backbone for Industrie 4.0 in automation technology. For production or process automation, drive applications with or without functional safety or modular machine designs, PROFINET is your first choice for industrial communication. At the same time, PROFINET is easy to handle, integrate and put into operation.
PROFINET is an open, manufacturer-independent standard: Besides Siemens many other technology providers offer solutions and support. Manufacturer-independent standardization of PROFINET is assured by PI (PROFIBUS & PROFINET International). Learn more about technology providers and their products:
Benefits of PROFINET:
- Open architecture and convergence with TCP/IP (complies with IEEE 802.3)
- Rapid data exchange, high data speed, and deterministic communication with minimal jitter
- Choice of media for networking (copper, glass fiber, wireless)
- Flexible network topologies (line, star, tree, ring) and functions to read out topologies
- Extensive diagnostic functions and tools
- Future-proof for Time-Sensitive Networking (TSN) through full compatibility with IEEE 802
For further information on flexibility, efficiency, and performance of PROFINET, see:
The right technology for the perfect foundationFor your PROFINET development project you shall take the following aspects into account: Which Conformance Class must be met? And what type of communication is needed – real-time or isochronous real-time communication? Find out more here.
The PROFINET standard defines what we call Conformance Classes. These are used to standardize functionality and performance. Depending on the required functionality, the most suitable type of PROFINET implementation must be chosen for each area of application. Siemens offers the right basic PROFINET technology for all Conformance Classes to facilitate device development.
Selecting the Conformance Class to be implemented depends on the application (e.g. coordinated axis control or measuring technology), but the Class may also be determined by the end customer’s requirements.
The Conformance Classes are described in more detail below:
PROFINET specifies two different device types:
- Controller (Master, usually the machine controller)
- Device (Slave, e.g. the field device)
The hardware to be used depends on the Conformance Class that must be met. PROFINET over RT (Conformance Class A and B) can be implemented using standard Ethernet hardware. PROFINET over IRT (Conformance Class C) requires specific hardware support.
Naturally, a device that meets Conformance Class C can also support RT.
Support for controller and device developmentFor PROFINET controllers or PROFINET devices – with Siemens you can streamline and simplify development of your PROFINET devices thanks to ready-to-use hardware and software components like PROFINET stack, PROFINET drivers, communication modules, Development Kits, APIs or ERTEC ASICs, and the appropriate development kits.
Low-cost components are a major competitive advantage in machine mass production in particular, where users often utilize control software developed in-house. The individual application is implemented on standard PCs due to performance, flexibility or cost. The PROFINET driver supports these applications and requires no special hardware since it uses a standard Ethernet interface.
Since the PROFINET driver is supplied as source code, in-house solutions can be ported to a range of operating systems and hardware platforms. That means the PROFINET driver is also perfectly suited for use in the embedded systems for in-house control solutions. Configuration is easy via an open XML interface with no need for engineering tools. It can also be done conveniently in the usual way via the TIA Portal. The centerpiece is the SIMATIC PROFINET stack, which has been proven in use for many years.
The PROFINET driver is suitable both for simple applications, e.g. individual PROFINET lines, and for complex machines. Using a standard Ethernet interface, it supports PROFINET over RT for cycle times of 1 ms or more.
- Update times: 1 ms with a real-time operating system, 32 ms for Windows
- Quantity structure: 128 devices for Debian Linux, 16 devices for Windows
- Standard implementation for Debian Linux with RT patch and Windows
- Option handling
- Fast device start-up
- Shared device access
- Adaptation of device and vendor ID
- Including standard examples for mechanical engineering and TIA Portal projects
With the SIMATIC CP 1625 Dev, Siemens offers a Development Board to develop a PROFINET IRT controller for cycle times of 500 μs or more. The centerpiece is the ASIC SOC1, which assures the hardware support needed to construct an IRT controller.
The IRT controller based on the PROFINET driver with CP 1625/SOC1 supports isochronous mode. Control systems for metrology or sophisticated motion control applications can be created, e.g. electronic switchgear, path interpolation, coordinated axle control. An example containing a PROFIdrive connection is available for download.
The PROFINET driver and PNConfigLib are supplied as source code. This facilitates adaptations or porting needed for integration into specifically developed target systems. A faster and easier start can be achieved using the Evaluation Board CP 1625 Dev as the development platform.
Development of an RT or IRT controller and device with Development Kit DK-16xx PN IO for CP 1604 / CP 1616 or Development Kit DK-HN PN IO for CP 1626
The manufacturers of proprietary control solutions often need to be able to integrate their application in a PROFINET network (both in RT as well as IRT operation). This can be done quickly and easily with the help of our CPs, whether it’s as a PN IO controller and/or as a PN IO device. Thanks to the supplied Windows driver, operation is possible with no special programming knowledge required, and the cards can be planned and configured as usual via the TIA Portal. Since machine manufacturers frequently use other operating systems as well, the Development Kits (drivers and IO-Base software) for the CPs are also included. They are available in source code for all operating modes under Linux and can be ported to any PC-based operating system. This applies to both IRT and RT operation.
Using the appropriate software extension (see PROFIsafe Starter Kit), the device functionality can also be converted to a PROFIsafe device.
Three different card interfaces are available to support a broad application area. In addition, there is a version with rail approval for the CP 1604.
- Full duplex with auto-negotiation
- With Ethernet real-time ASIC ERTEC 400 / SOC
- Integrated 4-port real-time switch
- Communication services:
- PROFINET IO controller and/or PROFINET IO device
- IRT support for motion control applications
- High performance thanks to direct memory access
- Integration in network management systems thanks to SNMP support
- Extensive diagnostic options for installation, commissioning, and operation of the module
- Powerful engineering tools are included in the scope of delivery of the module
Development Kit DK-16xx PN IO / DK-HN-IE PN IO included in the scope of delivery Driver and IO-Base software for CP 1604/1616/1626 PROFINET IO controller and IO device in the source code under Linux for porting to any PC-based operating system with IO-based interface for:
- PROFINET communication:
- PROFINET IO controller:
Connection of field devices to Industrial Ethernet with PROFINET
- PROFINET IO device:
Connection to a PROFINET IO controller via real-time communication according to PROFINET standard
- Access for clock-synchronous access to real-time data for PROFINET via IRT, extremely short cycle times with high-precision clock rates, jitter accuracy, isochronous mode, and cycle time enable high-performance motion control applications.
- Direct memory access to the process data, the process data of the IO devices is always consistent. The IO programming interface provides the PC programmer with function calls for data exchange.
- IO routing
- The design of the interface not only enables fast access as a PROFINET IO controller, it also provides easy portability into other operating system environments (such as VxWorks, QNX, RMOS, RTX). With the Development Kits, the CP 1604/1616/1626 communication processors can be integrated in any PC-based operating system environment. The Development Kits contain the necessary driver and IO-base source code including porting instructions as well as sample code running under Debian Linux.
Manufacturer-independent standardization ensures strong end-customer satisfactionApplication profiles are jointly established by manufacturers and users to define specific properties, performance features, and behaviors of devices and systems. General application profiles like PROFIsafe, PROFIdrive, and PROFIenergy enable use with various applications.
PROFIsafe starter kit – Create fail-safe field devices faster
PROFIsafe starter kit – Create fail-safe field devices faster
Functional safety is a serious consideration in automation. The PROFIsafe starter kit can be used to easily implement failsafe field devices. Sample implementations for easy connection to ERTEC platforms are available for the PROFIsafe stack.
F messages between an F host (safety controller) and its F device are transported as payloads in PROFINET telegrams.
The PROFIsafe protocol eliminates the need for the user to evaluate the safety of his individual backplane bus system or other channels beyond PROFINET. It therefore ensures the functional safety of the entire path, from the sender of an F signal, such as an F module in the remote bus terminal, to the receiver, the F host, and vice versa. This is achieved by additional safety measures in the F messages.
PROFIsafe is defined in IEC61784-3-3 as the protocol for implementing functional safety (failsafe), and is recognized by IFA (industrial safety institute of the DGUV, German Social Accident Insurance) and TÜV. PROFIsafe can be used equally with PROFIBUS and PROFINET.
Fail-Safe (F) is the ability of a system to safely protect against hazards or reduce the risk to an acceptable level through the use of appropriate technical and organizational measures.
The PROFINET user organization urgently recommends compliance with the following key preconditions to ensure efficient initial development of a PROFIsafe product:
- Establish development processes for functional safety in accordance with IEC 61508
- Use a PROFIsafe Development Kit to avoid traps and wrong turnings
- Have the development process monitored by a testing center (as per the “V” model of IEC 61508)
PROFIdrive – Implement drive concepts quickly and easily
PROFIdrive describes a standardized drive interface for PROFIBUS and PROFINET. This application-oriented profile, also codified in accordance with IEC 61800-7, includes standardized parameters (syntax and semantics) for communication between drives and automation systems, ensuring independence from any specific manufacturer.
The PROFIdrive application profile forms the basis for multiple drive tasks in industrial automation technology. It defines device behavior and the process of accessing drive data from electric drives, and also perfectly incorporates the additional PROFIsafe and PROFIenergy profiles.
The application example includes:
From the drive perspective, PROFIdrive (orange) functions as an application layer between the PROFINET stack (green) and the drive application (blue).
Reasons for certification
Device certification by an accredited PI Test Laboratory (PITL) is mandatory for PROFINET to ensure the interoperability and conformance of automation devices from different manufacturers. This increases plant availability for end customers and significantly reduces the risk of costly service calls for device manufacturers.
Certification involves checking whether automation devices comply with standards, which ensures that the components in an automation system will work together seamlessly. Although certification is mandatory for every PROFINET device, the cost of certification will vary depending on the technology used.
Global support for developing your PROFINET deviceComprehensive consulting prior to starting the development project is particularly important for an efficient and successful development process. The final step in field device development is certification. For PROFINET, Siemens also offers you independent, accredited test laboratories like ComDeC in Germany, PIC in the USA and ITEI in China, and an Test labs in the Czech Republic.
Our experts in ComDeC will be glad to assist you
Siemens competence centers will advise you in choosing the right technology component for developing your PROFINET device, offer training opportunities, and support you throughout the entire development period all the way to successful certification. Talk to us.