Safety control device, safety control system, and method for detecting communication error
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United States of America Patent
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Mar 30, 2010
Grant Date -
Jan 24, 2008
app pub date -
Jan 29, 2007
filing date -
Jul 29, 2004
priority date (Note) -
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Abstract
A safety control device for ensuring safety of an object to be controlled, including: communication unit which is used for communication with another safety control device and uses a frame including a test bit string T having correlation with a base bit string B; and detection unit which compares with the base bit string B the test bit string T included in a frame having been received from another safety control device, thereby determining the number of bit errors in the frame.
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