Method for realizing openSAFETY function security based on POWERLINK
An implementation method and technology of functional safety, applied in the directions of comprehensive factory control, comprehensive factory control, user identity/authority verification, etc., can solve the problems of network transmission performance limitations such as openSAFETY real-time time period, data frame length and information security, etc. Excellent network real-time performance and the effect of meeting higher performance network security requirements
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0024] The present invention designs a POWERLINK-based openSAFETY functional security implementation method, replaces the CANopen protocol of the POWERLINK application layer with the openSAFETY protocol, and integrates the openSAFETY functional modules into the POWERLINK protocol stack through function calls, thereby realizing openSAFETY on POWERLINK security function.
[0025] Specifically, as attached figure 1 As shown, the POWERLINK service data object, process data object and network management state machine serve for the POWERLINK network to realize inter-node communication and lower layer protocol data transmission. in:
[0026] Process data objects are used for the cyclic transfer of process data for synchronous communication.
[0027] The service data object is a communication data object like the process data object, and the servic...
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