Patent
1995-09-29
1998-06-09
Harvey, Jack B.
395281, 395287, H01J 1300
Patent
active
057649278
ABSTRACT:
A bus structure for interconnecting the modules of an industrial automation controller includes DATA lines and associated control lines that enable interface circuits on each module to transfer frames of data. Modules connected to the bus structure support data transfers of differing widths and differing speeds, and interface circuits within each module automatically adapt to data width and speed differences between communicating modules. During a first bus cycle of each transfer, sending and receiving modules negotiate a bus width and clock speed to be used for the transfer by asserting their respective width and speed codes onto a set of wired-or status lines. After the first bus cycle, the status lines are then used for communicating alternate functions between the participating modules.
REFERENCES:
patent: 5014236 (1991-05-01), Pogorzelski et al.
patent: 5132967 (1992-07-01), Kalajainen
patent: 5444858 (1995-08-01), Walkerly
patent: 5454084 (1995-09-01), Uchikoga
patent: 5553244 (1996-09-01), Norcross et al.
patent: 5564059 (1996-10-01), Maskovyak et al.
patent: 5590299 (1996-12-01), Bennett
patent: 5590378 (1996-12-01), Thayer et al.
patent: 5594877 (1997-01-01), Lentz et al.
patent: 5608882 (1997-03-01), Abert et al.
patent: 5630077 (1997-05-01), Krein et al.
IEEE Standard for Futurebust+--Logical Protocol Specification, IEEE Computer Society, Sep. 26, 1991, pp. 39 to 56.
Multibus II Bus Architecture Specification, Intel Corporation, 1984, pp. 2-27 to 2-37.
Calderon Jack D.
Cribbs Alan C.
Harris Kendal R.
Hutz Margarita M.
Karpuszka David A.
Allen Bradley Company, Inc.
Harvey Jack B.
Horn John J.
Miller John M.
Phan Raymond N.
LandOfFree
Backplane data transfer technique for industrial automation cont does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Backplane data transfer technique for industrial automation cont, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backplane data transfer technique for industrial automation cont will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2212837