Methods and structures for utilizing a memory device for a PLC

Details Methods and structures for utilizing a memory device for a PLC Methods and structures for utilizing a memory device for a PLC

2005-02-11

2010-10-12

DeCady, Albert (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Sequential or selective

C702S183000, C702S187000, C712S200000

Reexamination Certificate

active

07813816

ABSTRACT:
Certain exemplary embodiments comprise a method comprising a plurality of activities comprising: at a programmable logic controller comprising a memory device, receiving a request to create a data log that is adapted to receive data from a process; initializing the data log by writing to the data log a head marker code in the record type field of a first record and an invalid code in the record type field of a last record of the data log, the last record logically preceding and logically adjacent to the first record.

REFERENCES:
patent: 4493083 (1985-01-01), Kinoshita
patent: 5832508 (1998-11-01), Sherman et al.
patent: 6438651 (2002-08-01), Slane
patent: 6701284 (2004-03-01), Huntley et al.
patent: 2004/0078551 (2004-04-01), Lichtenfels
patent: 2004/0249606 (2004-12-01), Hoppes et al.
patent: 4207086 (1993-10-01), None
patent: 10163206 (2003-07-01), None
patent: 1 563 812 (1980-04-01), None
PCT International Search Report, mailed Sep. 1, 2005.
PCT Written Opinion.

Affiliated with

Also associated with

Rating

Methods and structures for utilizing a memory device for a PLC does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and structures for utilizing a memory device for a PLC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and structures for utilizing a memory device for a PLC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4204456