Method and device for safety communication

Method and device for safety communication

  • CN 101,262,338 B
  • Filed: 06/16/2000
  • Issued: 04/01/2015
  • Est. Priority Date: 07/30/1999
  • Status: Active Grant
First Claim
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1. the method used in the equipment being coupled to communication channel, comprises the steps:

  • Determine the safety service that data block is performed;

    In software routines, generate the security information transmitted together with described data block, described security information identifies described safety service;

    Described data block is received from described software routines;

    Use and be suitable for controlling to come according to described security information processing said data block with the network controller of the communication of described communication channel;

    Determine that described data block is the need of by loopback;

    AndIf described data block needs by loopback, then described data block is transmitted back to described software routines to process further.

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