Failsafe transmission of data
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Abstract
The invention relates to a system and a method for the failsafe transmission of data, the system having at least one component (2, 6, 7), which is enhanced for the failsafe transmission of data. To allow the failsafe transmission of data with reduced hardware outlay, it is proposed according to the invention that the one-channel component (2, 6, 7) is enhanced for the fail-safe transmission of data in that it is connected via a bus (1) to a failsafe computer unit (8), it has a communication driver (23), which maintains the data in standard and non-standard form, the communication driver (23) maintains a marker value, which indicates whether safe replacement values or real values are used, in standard and non-standard form, a checksum is generated in the communication driver (23) from the data maintained in non-standard form and a program run control is provided to monitor execution of the program.
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Citations
31 Claims
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1-12. -12. (canceled)
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13. A system for the failsafe transmission of data, comprising:
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at least one one-channel component, the component comprising;
an interface for connecting the component via a bus to a failsafe computer unit;
a communication driver maintaining the data in standard and non-standard form, wherein the communication driver maintains a marker value indicating whether safe replacement values or real values are used, wherein the marker value is in standard and non-standard form, and wherein a checksum is generated in the communication driver from the data maintained in non-standard form; and
a program run control for monitoring a program flow. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for failsafe transmission of data, wherein data is transmitted in a failsafe manner with at least one one-channel component, the method comprising:
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connecting the component via a bus to a failsafe computer unit;
maintaining the data in standard and non-standard form by a communication driver of the component;
maintaining a marker value by the communication driver in standard and non-standard form, wherein the marker value indicates whether safe replacement values or real values are used;
generating a checksum in the communication driver from the data maintained in non-standard form; and
monitoring an execution of a program by a program run control. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A one-channel component for the failsafe transmission of data, comprising:
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an interface for connecting the component via a bus to a failsafe computer unit;
a communication driver maintaining the data in normal and deviant form, wherein the communication driver maintains a marker value indicating whether safe replacement values or real values are used, wherein the marker value is in normal and in deviant form, and wherein a checksum is generated in the communication driver from the data maintained in deviant form; and
a program run control for monitoring execution a program flow. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification