Method for controlling the access times to a system bus and...

Details Method for controlling the access times to a system bus and... Method for controlling the access times to a system bus and...

2006-05-31

2010-06-01

Tsai, Henry W. H. (Department: 2184)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output process timing

C702S089000, C713S400000

Reexamination Certificate

active

07730240

ABSTRACT:
A method for defining a cycle time for a transmission cycle on a system bus of a monitoring and/or control system having at least one communication module and at least one input/output module, which is connected to the communication module via the system bus for transmitting measurement and/or control signals and is intended to input and/or output measurement and/or control signals to field applications, the at least one communication module having a time control unit for controlling a transmission cycle which is constantly repeatedly carried out and has defined communication times for the communication and input/output modules which are connected to the system bus, comprises measuring the signal propagation times on the system bus and defining the cycle time for a transmission cycle on the system bus on the basis of the longest signal propagation time measured.

REFERENCES:
patent: 5680596 (1997-10-01), Iizuka et al.
patent: 6832326 (2004-12-01), Kubo et al.
patent: 6909699 (2005-06-01), Masunaga et al.
patent: 7028204 (2006-04-01), Jammes et al.
patent: 7219155 (2007-05-01), Asamoto et al.
patent: 2003/0014680 (2003-01-01), Zielbauer
patent: 103 24 001 (2004-12-01), None
patent: 1 179 908 (2002-02-01), None

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