Reasons for the certification
Field devices are networked via fieldbusses such as PROFINET in machines and systems. Using certified field devices guarantees interoperability of components from various manufacturers and contributes to a higher system availability as well as time and cost savings for the operator.
To ensure interoperability of PROFINET devices currently available on the market within an automation system, they have to pass the mandatory certification tests. The functionality of a field device is proven by a certification test from ComDeC as accredited test lab and by a corresponding certificate issued by the PROFIBUS User Organization (PI).
The most important requirements from the point of view of plant operators are:
Device replacement without a programming device
User-friendly plant topology
Comprehensive diagnostics concept
Isochronous and redundant data transmission
These listed functions are standardized in the PROFINET standard. It is only a matter of implementing these topics into the field devices and proving conformity to the standard so that they can be used in any automation system with PROFINET.
As one of the ten test labs established by the PI world-wide, we offer certification of your devices for compatibility with the standards IEC 61158 and IEC 61784. For PROFINET, certification of all field devices carrying the PROFINET name is mandatory.
Certification tests for example of PROFINET
In addition to the specific functionality defined by the specified conformance class, there are basic tests that each field device has to pass successfully, for example
Correct implementation of the bus interface
Starting characteristics, fault-free ramp-up
Reading and checking a GSD file
Testing with an IO controlle
IO device test with and without IO supervisor
Testing of the IO device with two IO controllers
Triggering diagnostics and interrupts
Standard errors (power off/on of the IO device and IO controller) and many more
Do you have additional questions regarding certification? We will be glad to answer them for you.
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