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Did not receive response for function 255 in time (-1)

Von yvo
in Software, Programmierung und externe Tools

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Dear list

Some bricklets are used by services written as Python-scripts started automatically at the startup of the RaspberryPis were the applications are running. One of those bricklets is an IndustrialDualRelay.

At the start of the service / of the script, I am getting sometimes the following exception: 

Exception during usage of DualRelay: Did not receive response for function 255 in time (-1)

Question:

  • Can it be, that the service starts to early and the connection to the bricklet cannot be established?
  • And do you have any suggestions?

Thank you advance for any ideas and hints.

Cheers. Yvo

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