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2
Compatibility and system requirements
2.1
Certification
JUMO variTRON 500
The JUMO variTRON 500 automation system (product group 705002) is certified to Conformance Class
A (abbreviated to CC-A) and net load class "Netload Class I."
The certificate is available for download from the product page on the Internet.
The following QR code or web address will take you to the product page:
qr-705002-en.jumo.info
2.2
PROFINET IO and Ethernet standard services
The PROFINET IO communication occurs in a parameterizable time pattern (RT channel). This ensures
that the IO data are transferred in real-time without being affected by Ethernet standard services. The
remaining time between the RT phases (NRT channel) is used for the communication between the
Ethernet standard services. Broadband bottlenecks impair the performance of the standard services.
The real-time capability of the PROFINET IO communication is guaranteed by the reserved RT channel.
2.3
Requirements for hardware, software, and cabling
Network installation
Any switches used to network PROFINET IO devices must support the following standards and func-
tions:
•
100 Mbit/s (transfer rate of the switchports)
•
Auto negotiation (automatic setting of the switchport transfer rate)
•
Cut through (direct relaying of the data between the switchports)
Full duplex support for the switchports
IEEE 802.1 Q (VLAN support for at least 4 priority classes)
The network installation must be carried out so that it is compliant with the requirements of a 100BASE-
TX Ethernet network with cabling to CLASS D or higher. The "PROFINET Cabling and Interconnection
Technology" guideline also provides information on correct cabling.
2 Compatibility and system requirements
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