Some notes about Profibus

I am writing some random notes about Profibus technology that I took sometime ago:


  • Higher accuracy since it is a digital technology
  • Multivariable because can read more process variables in one single transmitter
  • More information available as status and diagnostic
  • Saves money on Profibus installation by using fewer cables
  • Asset management made ??easy by the amount information available


  • Capacitive effect on the cable attenuates the communication signal
  • Lower communication rates of DP network decreases the susceptibility to noise
  • The DP line does not supply energy to the connected nodes
  • The twisted cable prevents the effect caused by the magnetic
  • The cable shield protects against electrostatic effect

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