Bus Module for Connection to a Bus System and Use of Such a Bus Module in an AS-I Bus System
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Abstract
Disclosed is a bus module that can be connected to a bus system and comprises means for outputting safety-relevant signals in the form of repeated unambiguous code sequences. The bus module further comprises a first and second arithmetic unit with means for executing software programs. A code generator program of the first arithmetic unit generates a first partial code sequence of the code sequence while a code generator program of the second arithmetic unit generates the remaining portion of the code sequence as a second partial code sequence. Advantageously, a proper code sequence is output at the output of the bus module only when both arithmetic units function properly. A deviation in the code sequence that is output can then be detected by a monitor or actuator.
20 Citations
28 Claims
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1-10. -10. (canceled)
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11. A bus module for connection to a bus system, comprising:
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an output for outputting safety-relevant signals in the form of repeated unambiguous code sequences; a first computing unit for executing a software program; a second computing unit for executing a software program; a first code generator program for the first computing unit, wherein the first code generator program generates a first partial code sequence of the code sequence; and a second code generator program for the second computing unit, wherein the second code generator program generates a remaining part of the code sequence as a second partial code sequence. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification