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CertifBus
Independent prep for bus & BMS certifications
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Free exams

  • KNX Basic
  • KNX Advanced
  • BACnet
  • Modbus
  • PROFINET
  • PROFIBUS
  • CMVP
  • DALI-2
  • OPC UA
  • EnOcean
  • Matter
  • LoRaWAN

Comparisons

  • KNX Basic vs Advanced
  • KNX vs Loxone
  • PROFINET vs Modbus
  • OPC UA vs Modbus
  • BACnet vs Modbus
  • PROFIBUS → PROFINET
See all comparisons →

Free tools

  • Modbus exception code decoder
  • KNX TP topology validator
  • LoRaWAN airtime calculator
  • PROFIBUS baud rate ↔ distance calculator
  • PROFINET cycle time calculator
  • BACnet Object type lookup
See all tools →

Long-form guides

  • KNX Advanced certification
  • KNX Basic certification
  • BACnet certification
  • OPC UA certification path
  • Matter protocol explained
  • LoRaWAN class A / B / C
See all guides →

Learn

  • Question bank
  • Exam topics
  • KNX glossary
  • Interactive quiz

Product

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  • Full catalogue
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  • KNX certification

About

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CertifBus is an independent preparation and training tool. KNX, PROFINET, PROFIBUS, BACnet, Modbus, DALI-2, OPC UA, EnOcean, Matter, LoRaWAN and CMVP are registered trademarks of their respective owners. CertifBus is neither affiliated with nor endorsed by the KNX Association, ASHRAE, BACnet International, PROFIBUS & PROFINET International, the Modbus Organization, the DALI Alliance, the OPC Foundation or any other official certification body.

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