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IEC 61508 Safety: Safe software solutions according to IEC 61508 (SIL2 up to SIL3)
KW-Software is the worldwide leading manufacturer for safe software components according to the IEC 61508 standard, ranging from the simple parameterization of the safety functionality of small controls or drives to freely programmable safety controls for mechanical and system engineering. For good reasons:
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- We have the know-how.
KW-Software can look back on more than 30 years experience with automation software and has been developing safe software according to IEC 61508 since 2000.
- Certified development process.
The development process for software components of the safety technology at KW-Software is certified according to IEC 61508.
- Certified software components.
The safety-relevant software components by KW-Software are already certified completely manufacturer-independent and can thus be used immediately.
- We meet the PLCopen safety specification.
We are the first company providing a PLCopen-compliant IEC 61508 safety platform including all PLCopen function blocks as library.
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- We are achieving outstanding results in practice.
Example car body manufacturing at Audi AG: Here SAFEPROG/SafeOS is used for complete project planning. In this context, SAFEPROG covers the entire safety-relevant planning of the control solution ranging from programming, parameterization, integration of the safe I/Os, validation of the PLC program up to commissioning.
- We deliver the complete safe software solution.
Apart from the safe IEC 61131 programming system SAFEPROG for the PC, KW-Software provides the safe runtime system SafeOS for the safety control, including additional firmware services and the required hardware tests for the processor and the memory. Thanks to these components, the software efforts on the part of our customer are confined to a board support package and the further hardware diagnosis. An independent operating system is no longer required. Thus, our customer can fully focus on the development of his hardware. |
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Safe software solutions: Our IEC 65108 safety platform
Due to the comprehensive meaning of the IEC 61508, our safety platform can be used for developing safety-relevant controls for the most different industrial sectors, e.g. for factory automation, process automation, rail vehicles or energy supply.
Our software solutions cover the whole range of safe applications according to the IEC 61508 for SIL2 and SIL3, starting with small safety controls with only a few inputs and outputs up to complex safety-relevant systems. The KW-Software safety platform includes the following tools, certified according to IEC 61508 (up to SIL3):
- SAFEPROG: Safe programming system for complex SafePLCs with integration into the non-safe area
- SAFECONF: Safe configuration tool for intuitive and simple configuration of safety devices
- SAFEGRID: Safe device parameterization tool for safe switching devices or safe small controls with predefined safety logic
SAFEPROG and SAFECONF are used in combination with the safe IEC 61508 PLC runtime environment SafeOS and enable realization of SIL3 safety applications.
Our safe software components are complemented by SAFEFBTest, a test automation tool for verification of function blocks up to SIL3 according to IEC 61508. |
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[IEC 61508 programming systems]
[IEC 61508 runtime system SafeOS]
[The path towards your own safety control]
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Certification according to IEC 61508
KW-Software is the first software company that has been certified by TÜV Rheinland (in 06/2004) with regard to the development process for software components according to IEC 61508.
Our certification - your advantages:
- Time to Market of your control will be considerably reduced:
By using SAFEPROG, SAFEGRID and SafeOS, manufacturers of safety controls can focus on the development of the hardware, as all safe tools are already certified according to the strict requirements of IEC 61508 up to SIL3 (comparable EN ISO 13849-1 formerly EN 954-1). Only the adaptations of the open interfaces must be re-released
- High quality safety mechanisms (V model)
- Great know-how and high qualification for the development of safety-relevant applications
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[Information about the IEC 61508 standard]
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Conformity with the PLCopen safety specification
KW-Software is the first company that provides a PLCopen-compliant IEC 61508 safety platform including full support of the PLCopen safety function blocks.
In 2005, several well-known providers of automation solutions, software companies and certification authorities have defined the PLCopen safety specification (TC5). |
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This specification defines a unified standard for safety-focused application software and thus a quality standard which was long overdue. |
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[Details about the PLCopen safety specification]
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The already certified safety-relevant software components by KW-Software already meet this international quality standard today. In case of the programming system SAFEPROG, this is realized by the following features:
- KW-Software provides all PLCopen safety function blocks as library in SAFEPROG
- Color marking of different function blocks
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- Use of safe and non-safe data types
- Easy operation of the user interface
- Graphical programming languages (LD, FBD)
- Plausibility checks in the graphical editor
- Native machine code
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Changing safety technology
Today, machines and systems are stuck in a rigid concept of hardware-based safety solutions. By using programmable safety controls, entirely new possibilities become available in this area. The most important advantages are the fast commissioning in particular (less cabling), improved error diagnosis and the central programming with certified function blocks. |
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Acceptance and demand for programmable safety functions increase constantly. However, the development efforts of a safety control are significantly higher compared to a standard product, due to standards and certification. Use of software products which are already certified considerably simplifies realization and certification. |
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