Method of maintaining a data log related to a programmable logic controller (PLC)
AssigneeSiemens Industry, Inc.
InventorsMark Boggs, Steven Hausman, Temple Fulton, William Johnson
Life of this patent
Estimating the term…
Abstract
Certain exemplary embodiments can provide a method for utilizing a memory cartridge connected to a Programmable Logic Controller (PLC). The memory cartridge can comprise a plurality of memory segments. The method can comprise a plurality of activities comprising: providing a default identifying stamp for records in a data log file, a structure for the data log file stored separately from the data log file in the memory cartridge, and obtaining a request to provide the data log file.
Claims19
A method for utilizing a memory cartridge connected to a PLC, the memory cartridge comprising a plurality of memory segments, the method comprising a plurality of activities comprising:
- locating, on the memory cartridge, a first head marker relatable to a first data log record, the first head marker indicative of a beginning memory segment for a second data log record to be written;
- and
- writing the second data log record to at least the beginning memory segment, the second data log record corresponding to a data log file structure stored separately from on the memory cartridge, and structurally defining, a file comprising the first data log record and the second data log record, the data log file structure comprised by a project file, the project file further comprising a PLC program and a recipe structure.
A method comprising a plurality of activities comprising:
- on a memory cartridge connected to a programmable logic controller (PLC), writing a first data log record to at least a beginning memory segment of the memory cartridge, the memory cartridge comprising a plurality of memory segments, the first data log record corresponding to a data log file structure stored separately from a data log file on the memory cartridge, the data log file structure structurally defining the data log file, the data log file structure comprised by a project file, the project file further comprising a PLC program and a recipe structure, the beginning memory segment located via a first head marker relatable to a second data log record, the first head marker indicative of the beginning memory segment.
A machine-readable medium comprising computer-executable instructions for activities comprising:
- locating, on a memory cartridge connected to a programmable logic controller (PLC), a first head marker relatable to a first data log record, the first head marker indicative of a beginning memory segment for a second data log record to be written, the memory cartridge comprising a plurality of memory segments;
- writing the second data log record to at least the beginning memory segment, the second data log record corresponding to a data log file structure stored separately from on the memory cartridge, and structurally defining, the data log file, the data log file structure comprised by a project file, the project file further comprising a PLC program and a recipe structure;
- creating a second head marker relatable to the second data log record;
- and
- changing the first head marker to be a non-head marker.
Dependencies are inferred from the claim text.