4/7/2018 11:19 AM | |
Joined: 3/28/2015 Last visit: 8/25/2024 Posts: 721 Rating: (213) |
Hello, Kindly have a look at the following topic: What is the difference between standard module and fail-safe module |
Eng.Mohamed Ibrahim |
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This contribution was helpful to1 thankful Users |
4/9/2018 6:47 AM | |
Posts: 7 Rating: (0) |
Thanks , Your differentiation of Safety PLC was helpful, Also i need to know , If we have configured Safety PLC, and get any Fault like High "Air Pressure/ Light curtain Break " then what will the Reaction of safety i/p or O/p . I mean what action will be done by safety IO's . |
This contribution was helpful to1 thankful Users |
4/9/2018 10:15 AM | |
Joined: 3/28/2015 Last visit: 8/25/2024 Posts: 721 Rating: (213) |
Hello, Kindly have a look at the following topic: SIMATIC Industrial Software Safety Engineering in SIMATIC S7 Fault Reactions Safe StateThe basic principle behind the safety concept is the existence of a safe state for all process variables. The value "0" represents this safe state for digital F-I/O. This applies to both sensors and actuators. Fault Reactions in the F-CPU and Operating SystemThe F-CPU and the operating system react to faults in S7 Distributed Safety and S7 F/FH Systems the same way as in standard S7-300 and S7-400 systems. In addition, fault reactions are triggered in the safety program in F-Systems. Fault Reactions in the Safety ProgramAll of the fault reactions in the safety program cause the process variables to go to a safe state. Specifically, the fault reactions are:
Standard diagnostic and message functions can also be implemented in response to a detected fault. Fault Reactions in F-I/OAfter having detected an F-I/O / a channel fault, an F-I/O sets the safe state at the affected channel, or at all channels, that is, it passivates the channels of this F-I/O. The F-I/O signals the detected fault to the F-CPU. In addition, the fault is signaled to the safety program in the F-CPU via a safety message frame. Once the fault is eliminated, the F-I/O must be reintegrated (depassivation) (see "Fault Reactions in Safety Program"). |
Last edited by: Jen_Moderator at: 4/9/2018 11:45:49 AMOptimized link. Eng.Mohamed Ibrahim |
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